libstdc++-v3/ChangeLog

   1 2019-09-27  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         PR libstdc++/91910
   4         * src/c++11/debug.cc (_Safe_iterator_base::_M_detach()): Load pointer
   5         atomically and lock the mutex before accessing the sequence.
   6         (_Safe_local_iterator_base::_M_detach()): Likewise.
   7         (_Safe_iterator_base::_M_reset()): Clear _M_sequence atomically.
   8
   9 2019-09-26  Jonathan Wakely  <jwakely@redhat.com>
  10
  11         * include/debug/array (to_array): Define for debug mode.
  12
  13         * include/bits/stl_pair.h (pair): Add _GLIBCXX20_CONSTEXPR to
  14         piecewise construction constructor, assignment operators, and swap.
  15         * include/std/tuple (pair::pair(piecewise_construct_t, tuple, tuple)):
  16         Add _GLIBCXX20_CONSTEXPR.
  17         (pair::pair(tuple, tuple, _Index_tuple, _Index_tuple)): Likewise.
  18         * testsuite/20_util/pair/constexpr_assign.cc: New test.
  19         * testsuite/20_util/pair/constexpr_swap.cc: New test.
  20
  21         * include/experimental/internet (operator==, operator<): Fix loop
  22         condition to avoid reading past the end of the array.
  23
  24         * include/std/array: Remove references to profile mode.
  25         * include/std/bitset: Likewise.
  26         * include/std/deque: Likewise.
  27         * include/std/forward_list: Likewise.
  28         * include/std/list: Likewise.
  29         * include/std/map: Likewise.
  30         * include/std/set: Likewise.
  31         * include/std/unordered_map: Likewise.
  32         * include/std/unordered_set: Likewise.
  33         * include/std/vector: Likewise.
  34         * testsuite/17_intro/headers/c++1998/profile_mode.cc: New test.
  35         * testsuite/17_intro/headers/c++2011/profile_mode.cc: New test.
  36
  37 2019-09-25  Jonathan Wakely  <jwakely@redhat.com>
  38
  39         * include/bits/regex.h
  40         (basic_regex::assign(const C*, size_t, flag_type)): Add default
  41         argument (LWG 3296).
  42         * testsuite/28_regex/basic_regex/assign/char/lwg3296.cc: New test.
  43         * testsuite/28_regex/basic_regex/assign/wchar_t/lwg3296.cc: New test.
  44
  45 2019-09-24  Jonathan Wakely  <jwakely@redhat.com>
  46
  47         * include/std/variant (variant::index()): Remove impossible case.
  48
  49         PR libstdc++/91871
  50         * testsuite/util/testsuite_hooks.h
  51         (conversion::iterator_to_const_iterator()): Do not return an invalid
  52         iterator. Test direct-initialization and direct-list-initialization
  53         as well as implicit conversion.
  54
  55 2019-09-23  Jonathan Wakely  <jwakely@redhat.com>
  56
  57         PR libstdc++/91788 (partial)
  58         * include/std/variant (variant::index()): Improve codegen for cases
  59         where conversion to size_t already works correctly.
  60
  61 2019-09-23  Andreas Schwab  <schwab@suse.de>
  62
  63         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
  64
  65 2019-09-12  Jonathan Wakely  <jwakely@redhat.com>
  66
  67         PR libstdc++/91748
  68         * include/bits/stl_algo.h (for_each_n): Fix random access iterator
  69         case.
  70         * testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
  71         access iterators.
  72
  73 2019-09-11  Jonathan Wakely  <jwakely@redhat.com>
  74
  75         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker.__call__):
  76         Fix syntax error.
  77
  78         * testsuite/20_util/result_of/sfinae_friendly_1.cc: Add -Wno-volatile
  79         for C++2a and up. Define HAS_52748_FIXED and fix incorrect tests.
  80         * testsuite/tr1/3_function_objects/result_of.cc: Add -Wno-volatile
  81         for C++2a and up.
  82
  83 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
  84
  85         * include/std/type_traits (__do_common_type_impl): Implement
  86         additional COND-RES(CREF(D1), CRED(D2)) condition for C++20.
  87         (basic_common_reference, common_reference, common_reference_t): Define
  88         for C++20.
  89         * testsuite/20_util/common_reference/requirements/alias_decl.cc: New
  90         test.
  91         * testsuite/20_util/common_reference/requirements/
  92         explicit_instantiation.cc: New test.
  93         * testsuite/20_util/common_reference/requirements/typedefs.cc: New
  94         test.
  95
  96         * include/std/charconv (to_chars): Rename to __to_chars_i. Define
  97         non-template overloads for each signed and unsigned integer type and
  98         char. Define deleted overload for bool (LWG 3266).
  99         * testsuite/20_util/to_chars/1_neg.cc: Remove.
 100         * testsuite/20_util/to_chars/3.cc: New test.
 101         * testsuite/20_util/to_chars/lwg3266.cc: New test.
 102
 103 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 104
 105         * acinclude.m4: Handle uclinux*.
 106         * configure: Regenerate.
 107         * configure.host: Handle uclinux*
 108
 109 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 110         Mickaël Guêné <mickael.guene@st.com>
 111
 112         * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
 113         support.
 114
 115 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 116
 117         PR libstdc++/91711
 118         * testsuite/23_containers/span/get_neg.cc: Avoid ambiguity due to
 119         0ul being a valid null pointer constant.
 120
 121         * include/std/type_traits (__remove_cv_t): New alias template.
 122         (is_void, is_integral, is_floating_point, is_pointer)
 123         (is_member_object_pointer, is_member_function_pointer, is_null_pointer)
 124         (is_member_point), __is_signed_integer, __is_unsigned_integer)
 125         (__make_unsigned_selector, __make_signed_selector, remove_pointer)
 126         (__decay_selector): Use __remove_cv_t.
 127         (remove_cv): Add partial specializations for cv-qualified types.
 128         (__decay_t): New alias template.
 129         (__decay_and_strip, __common_type_impl, __result_of_impl): Use
 130         __decay_t.
 131         (__enable_if_t): Move earlier in the file.
 132         (_Require): Use __enable_if_t.
 133         (swap(T&, T&)): Use _Require.
 134         (swap(T(&)[N])): Use __enable_if_t.
 135
 136 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 137
 138         Implement C++20 p1424 - 'constexpr' feature macro concerns,
 139         Issue 3256 - Feature testing macro for constexpr algorithms,
 140         and Issue 3257 - Missing feature testing macro update from P0858.
 141         * include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
 142         * include/bits/algorithmfwd.h: Ditto.
 143         * include/std/utility: Ditto.
 144         * testsuite/25_algorithms/constexpr_macro.cc: Ditto.
 145         * testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
 146         __cpp_lib_constexpr macro in <algorith>.
 147         * testsuite/20_util/exchange/constexpr.cc: Add check for
 148         __cpp_lib_constexpr macro in <utility>.
 149         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
 150         __cpp_lib_constexpr_algorithms.
 151         * testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
 152         * testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
 153         * testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
 154         * testsuite/25_algorithms/copy/constexpr.cc: Ditto.
 155         * testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
 156         * testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
 157         * testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
 158         * testsuite/25_algorithms/count/constexpr.cc: Ditto.
 159         * testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
 160         * testsuite/25_algorithms/equal/constexpr.cc: Ditto.
 161         * testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
 162         * testsuite/25_algorithms/fill/constexpr.cc: Ditto.
 163         * testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
 164         * testsuite/25_algorithms/find/constexpr.cc: Ditto.
 165         * testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
 166         * testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
 167         * testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
 168         * testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
 169         * testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
 170         * testsuite/25_algorithms/generate/constexpr.cc: Ditto.
 171         * testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
 172         * testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
 173         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
 174         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
 175         * testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
 176         * testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
 177         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
 178         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
 179         * testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
 180         * testsuite/25_algorithms/merge/constexpr.cc: Ditto.
 181         * testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
 182         * testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
 183         * testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
 184         * testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
 185         * testsuite/25_algorithms/remove/constexpr.cc: Ditto.
 186         * testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
 187         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
 188         * testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
 189         * testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
 190         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
 191         * testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
 192         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
 193         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
 194         * testsuite/25_algorithms/search/constexpr.cc: Ditto.
 195         * testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
 196         * testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
 197         * testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
 198         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
 199         * testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
 200         * testsuite/25_algorithms/transform/constexpr.cc: Ditto.
 201         * testsuite/25_algorithms/unique/constexpr.cc: Ditto.
 202         * testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
 203         * testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.
 204
 205 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 206
 207         Update docs for recent <span> and constexpr lib changes.
 208         * doc/xml/manual/status_cxx2020.xml: Update p0202r3, p0858r0, p0879r0,
 209         p1023r0, p1085r2 status.
 210         * doc/html/manual/status.html: Regenerate.
 211
 212 2019-09-09  Antony Polukhin  <antoshkka@gmail.com>
 213
 214         * include/bits/charconv.h (__detail::__to_chars_10_impl): Replace
 215         final offsets with constants.
 216
 217 2019-09-09  Jonathan Wakely  <jwakely@redhat.com>
 218
 219         * include/bits/range_access.h (__adl_to_address): Remove.
 220         * include/std/span (__is_base_derived_safe_convertible_v): Replace
 221         with span::__is_compatible.
 222         (__is_std_array_v): Replace with __is_std_array class template and
 223         partial specializations.
 224         (__is_std_array, __is_std_span): New class templates and partial
 225         specializations.
 226         (span::__is_compatible): New alias template for SFINAE constraints.
 227         (span::span(element_type (&)[N])): Remove redundant constraints. Do
 228         not use __adl_data to obtain a pointer.
 229         (span::span(array<value_type, N>&)): Likewise.
 230         (span::span(const array<value_type, N>&)): Likewise.
 231         [_GLIBCXX_P1394] (span::iter_reference_t, span::iterator_t)
 232         (span::iter_value_t, span::derived_from): New alias templates for
 233         SFINAE constraints, until the equivalents are supported in <concepts>
 234         and <iterator>.
 235         [_GLIBCXX_P1394] (span::__is_compatible_iterator): New alias template
 236         for SFINAE constraints.
 237         [_GLIBCXX_P1394] (span::is_compatible_range): New class template for
 238         SFINAE constraints.
 239         [_GLIBCXX_P1394] (span::span(Range&&)): Improve constraints.
 240         [_GLIBCXX_P1394] (span::span(ContiguousIterator, Sentinel)): Likewise.
 241         Use std::to_address instead of __adl_to_address.
 242         [_GLIBCXX_P1394] (span::span(ContiguousIterator, size_type)): Likewise.
 243         [!_GLIBCXX_P1394] (span::__is_compatible_container): New alias
 244         template for SFINAE constraints.
 245         [!_GLIBCXX_P1394] (span::span(Container&))
 246         (span::span(const Container&)): Improve constraints.
 247         [!_GLIBCXX_P1394] (span::span(pointer, size_type))
 248         (span::span(pointer, pointer)): Remove redundant cast of pointer.
 249         (span(const span<OType, OExtent>&)): New constructor.
 250
 251 2019-09-06  Jonathan Wakely  <jwakely@redhat.com>
 252
 253         * include/bits/range_access.h (ssize): Define for C++20.
 254         * testsuite/24_iterators/range_access_cpp20.cc: New test.
 255         * doc/xml/manual/status_cxx2020.xml: Update P1227R2 status.
 256         * doc/html/*: Regenerate.
 257
 258 2019-09-06  Florian Weimer  <fweimer@redhat.com>
 259
 260         * configure: Regenerate.
 261
 262 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 263
 264         * doc/xml/manual/status_cxx2020.xml: Update status for P0122R7 and
 265         P1024R3. Remove entry for P0920R2.
 266         * include/std/span  (__cpp_lib_span): Change value.
 267         (__extent_storage, __extent_storage<dynamic_extent>): Remove default
 268         constructor.
 269         (span): Replace __extent_storage base class with data member.
 270         (span::_S_subspan_extent): New function.
 271         (span::empty()): Add nodiscard attribute.
 272         (span::front, span::back, span::operator[]): Check preconditions.
 273         (span::first, span::last, span::subspan): Add noexcept. Improve
 274         precondition checks (LWG 3103).
 275         (get): Remove redundant condition from static_assert.
 276         (tuple_element<I, span<T, E>>): Fix static_assert message and simplify.
 277         (as_writable_bytes): Add inline specifier.
 278         * include/std/version (__cpp_lib_span): Change value.
 279         * testsuite/23_containers/span/back_neg.cc: Remove stray semi-colon.
 280         * testsuite/23_containers/span/front_neg.cc: Likewise.
 281         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
 282         * testsuite/23_containers/span/last_neg.cc: Improve test.
 283         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
 284         * testsuite/23_containers/span/1.cc: New test.
 285         * testsuite/23_containers/span/2.cc: New test.
 286         * testsuite/23_containers/span/back_assert_neg.cc: New test.
 287         * testsuite/23_containers/span/first_2_assert_neg.cc: New test.
 288         * testsuite/23_containers/span/first_assert_neg.cc: New test.
 289         * testsuite/23_containers/span/first_neg.cc: New test.
 290         * testsuite/23_containers/span/front_assert_neg.cc: New test.
 291         * testsuite/23_containers/span/index_op_assert_neg.cc: New test.
 292         * testsuite/23_containers/span/last_2_assert_neg.cc: New test.
 293         * testsuite/23_containers/span/last_assert_neg.cc: New test.
 294         * testsuite/23_containers/span/subspan_2_assert_neg.cc: New test.
 295         * testsuite/23_containers/span/subspan_3_assert_neg.cc: New test.
 296         * testsuite/23_containers/span/subspan_4_assert_neg.cc: New test.
 297         * testsuite/23_containers/span/subspan_5_assert_neg.cc: New test.
 298         * testsuite/23_containers/span/subspan_6_assert_neg.cc: New test.
 299         * testsuite/23_containers/span/subspan_assert_neg.cc: New test.
 300
 301 2019-09-05  JeanHeyd Meneide  <phdofthehouse@gmail.com>
 302
 303         * include/Makefile.am: Add <span> header.
 304         * include/Makefile.in: Regenerate.
 305         * include/bits/range_access.h (__adl_begin, __adl_end, __adl_cbegin)
 306         (__adl_cend, __adl_rbegin, __adl_rend, __adl_crbegin, __adl_crend)
 307         (__adl_data, __adl_cdata, __adl_size, __adl_empty, __adl_to_address):
 308         New functions for performing argument-dependent lookup of range
 309         customization points.
 310         * include/bits/stl_iterator.h (__normal_iterator): Add
 311         _GLIBCXX20_CONSTEXPR to all functions.
 312         * include/std/span: New header.
 313         * include/std/version (__cpp_lib_span): Define feature test macro.
 314         * testsuite/23_containers/span/contiguous_range_neg.cc: New test.
 315         * testsuite/23_containers/span/everything.cc: New test.
 316         * testsuite/23_containers/span/get_neg.cc: New test.
 317         * testsuite/23_containers/span/last_neg.cc: New test.
 318         * testsuite/23_containers/span/subspan_neg.cc: New test.
 319         * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: New test.
 320         * testsuite/23_containers/span/tuple_element_oob_neg.cc: New test.
 321         * testsuite/23_containers/span/tuple_size_neg.cc: New test.
 322
 323 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 324
 325         * doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
 326         * doc/html/*: Regenerate.
 327
 328 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 329
 330         PR libstdc++/41861
 331         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Check for new
 332         pthread_cond_clockwait function.
 333         * configure.ac: Use GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT.
 334         * configure: Regenerate.
 335         * config.h.in: Regenerate.
 336         * include/std/condition_variable: (condition_variable): Rename
 337         __steady_clock_t typedef and add system_clock. Change __clock_t to be
 338         a typedef for the preferred clock to convert arbitrary other clocks to.
 339         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (wait_until): Add a steady_clock
 340         overload.
 341         (wait_until): Change __clock_t overload to use system_clock.
 342         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (__wait_until_impl): Add
 343         steady_clock overload that calls pthread_cond_clockwait.
 344         (__wait_until_impl): Change __clock_t overload to use system_clock.
 345         (condition_variable_any) [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT]: Use
 346         steady_clock for __clock_t if pthread_cond_clockwait is available.
 347
 348 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 349
 350         * testsuite/30_threads/condition_variable/members/2.cc (test01):
 351         Parameterise so that test can be run against an arbitrary clock.
 352         (main): Test using std::chrono::steady_clock and a user-defined
 353         clock in addition to the previous std::chrono::system_clock.
 354         * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
 355
 356 2019-09-03  Ulrich Weigand  <uweigand@de.ibm.com>
 357
 358         * crossconfig.m4: Remove references to spu.
 359         * configure: Regenerate.
 360         * doc/xml/manual/appendix_contributing.xml: Remove references
 361         to __ea as "badword" for spu.
 362         * doc/html/manual/source_code_style.html: Regenerate.
 363         * include/tr1/ell_integral.tcc (__ellint_rd): Do not attempt
 364         to avoid __ea (as "badword" for spu).
 365         (__ellint_rj): Likewise.
 366
 367 2019-09-03  Chung-Lin Tang  <cltang@codesourcery.com>
 368
 369         PR other/79543
 370         * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Fix GNU ld --version
 371         scanning to conform to the GNU Coding Standards.
 372         * configure: Regenerate.
 373
 374 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 375
 376         * src/c++17/memory_resource.cc: Use __constinit keyword.
 377
 378 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 379
 380         * doc/xml/manual/abi.xml: Document 9.x library versions.
 381         * doc/html/*: Regenerate.
 382
 383 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 384
 385         * include/std/charconv (__detail::__to_chars_2_len): Use std::log2p1.
 386         (__detail::__to_chars_8_len): Remove.
 387         (__detail::__to_chars_8): Inline length calculation here.
 388         (__detail::__from_chars_binary): Use numeric_limits instead of
 389         CHAR_BIT.
 390
 391 2019-09-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 392
 393         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 394         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt: Likewise.
 395         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 396         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 397         Likewise.
 398
 399 2019-09-01  François Dumont  <fdumont@gcc.gnu.org>
 400
 401         * testsuite_files/util/testsuite_performance.h
 402         (resource_counter::start): Ignore unused malloc(0) result.
 403
 404 2019-09-01  Gerald Pfeifer  <gerald@pfeifer.com>
 405
 406         * doc/xml/manual/policy_data_structures_biblio.xml (COM: Component
 407         Model Object Technologies): Adjust name and link.
 408
 409 2019-08-30  Antony Polukhin  <antoshkka@gmail.com>
 410
 411         * include/std/charconv (__detail::__to_chars_8)
 412         __detail::__to_chars_16): Replace array of precomputed digits with
 413         arithmetic operations to avoid CPU cache misses. Remove zero
 414         termination from array of digits to allow symbol merge with generic
 415         implementation of __detail::__to_chars. Replace final offsets with
 416         constants. Use __detail::__to_chars_len_2 instead of a generic
 417         __detail::__to_chars_len.
 418         (__detail::__to_chars): Remove zero termination from array of digits.
 419         (__detail::__to_chars_2): Leading digit is always '1'.
 420
 421 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 422
 423         * testsuite/23_containers/vector/cons/89164_c++17.cc: Fix errors.
 424
 425 2019-08-30  Uros Bizjak  <ubizjak@gmail.com>
 426
 427         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 428
 429 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 430
 431         PR libstdc++/89164
 432         * include/bits/stl_algobase.h (__copy_move): Give descriptive names
 433         to template parameters.
 434         * include/bits/stl_uninitialized.h (uninitialized_copy)
 435         (uninitialized_fill, uninitialized_fill_n): Add static assertions to
 436         diagnose invalid uses.
 437         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
 438         Adjust expected error.
 439         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
 440         New test.
 441         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/
 442         89164.cc: New test.
 443         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
 444         New test.
 445         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/
 446         89164.cc: New test.
 447         * testsuite/23_containers/vector/cons/89164.cc: New test.
 448         * testsuite/23_containers/vector/cons/89164_c++17.cc: New test.
 449
 450 2019-08-29  Jonathan Wakely  <jwakely@redhat.com>
 451
 452         PR libstdc++/91067
 453         * acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
 454         * configure: Regenerate.
 455         * config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
 456         missing symbols.
 457         * testsuite/27_io/filesystem/iterators/91067.cc: Test move
 458         constructors.
 459         * testsuite/util/testsuite_abi.cc: Add new symbol version.
 460
 461 2019-08-29  Jakub Jelinek  <jakub@redhat.com>
 462
 463         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 464         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 465
 466 2019-08-28  Jonathan Wakely  <jwakely@redhat.com>
 467
 468         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
 469         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 470         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
 471         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
 472         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 473         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 474         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 475
 476 2019-08-23  Joseph Myers  <joseph@codesourcery.com>
 477
 478         * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
 479         (std::filesystem::__gnu_posix::lstat): Add return type.
 480
 481 2019-08-20  Jonathan Wakely  <jwakely@redhat.com>
 482
 483         * doc/doxygen/user.cfg.in (INPUT): Remove profile mode headers.
 484
 485         * include/std/numeric (reduce): Fix Doxygen markup.
 486
 487         PR libstdc++/91371
 488         * include/std/type_traits (is_function): Simplify definition. Remove
 489         partial specializations for function types.
 490         (__is_referenceable): Simplify definition.
 491         * testsuite/20_util/bind/91371.cc: New test.
 492         * testsuite/20_util/is_function/91371.cc: New test.
 493         * testsuite/20_util/is_function/value.cc: Check more pointer types.
 494         * testsuite/20_util/is_member_function_pointer/91371.cc: New test.
 495         * testsuite/20_util/is_object/91371.cc: New test.
 496
 497 2019-08-16  Uros Bizjak  <ubizjak@gmail.com>
 498
 499         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 500
 501 2019-08-15  Jonathan Wakely  <jwakely@redhat.com>
 502
 503         PR libstdc++/91456
 504         * include/bits/std_function.h (__check_func_return_type): Remove.
 505         (function::_Callable): Use std::__is_invocable_impl instead of
 506         __check_func_return_type.
 507         * include/std/type_traits (__is_invocable_impl): Add another defaulted
 508         template parameter. Define a separate partial specialization for
 509         INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
 510         with a check that models delayed temporary materialization.
 511         * testsuite/20_util/function/91456.cc: New test.
 512         * testsuite/20_util/is_invocable/91456.cc: New test.
 513
 514 2019-08-14  Jonathan Wakely  <jwakely@redhat.com>
 515
 516         * include/std/type_traits (__is_nullptr_t): Add deprecated attribute.
 517
 518 2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
 519
 520         Implement C++20 p0879 - Constexpr for swap and swap related functions.
 521         * include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
 522         * include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
 523         New macro.
 524         (iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
 525         (prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
 526         (swap_ranges, nth_element, partial_sort, sort): Add constexpr.
 527         * include/bits/move.h (swap): Add constexpr.
 528         * include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
 529         (__gcd, __rotate, rotate, __partition, __heap_select)
 530         (__partial_sort_copy, partial_sort_copy, __unguarded_partition)
 531         (__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
 532         (__introselect, __chunk_insertion_sort, next_permutation)
 533         (prev_permutation, partition, partial_sort, nth_element, sort)
 534         (__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
 535         * include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
 536         (swap_ranges): Add constexpr.
 537         * include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
 538         __pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
 539         Add constexpr.
 540         * include/std/type_traits (swap): Add constexpr.
 541         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
 542         * testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
 543         * testsuite/25_algorithms/make_heap/constexpr.cc: New test.
 544         * testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
 545         * testsuite/25_algorithms/nth_element/constexpr.cc: New test.
 546         * testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
 547         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
 548         * testsuite/25_algorithms/partition/constexpr.cc: New test.
 549         * testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
 550         * testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
 551         * testsuite/25_algorithms/push_heap/constexpr.cc: New test.
 552         * testsuite/25_algorithms/reverse/constexpr.cc: New test.
 553         * testsuite/25_algorithms/rotate/constexpr.cc: New test.
 554         * testsuite/25_algorithms/sort/constexpr.cc: New test.
 555         * testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
 556         * testsuite/25_algorithms/swap/constexpr.cc: New test.
 557         * testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.
 558
 559 2019-08-12  Jonathan Wakely  <jwakely@redhat.com>
 560
 561         PR libstdc++/90361
 562         * src/c++17/string-inst.cc: Use _GLIBCXX_USE_CXX11_ABI=1 by default.
 563
 564         * include/std/tuple (__unpack_std_tuple): New variable template and
 565         partial specializations.
 566         (apply, make_from_tuple): Add noexcept-specifier.
 567         * testsuite/20_util/tuple/apply/2.cc: New test.
 568         * testsuite/20_util/tuple/make_from_tuple/2.cc: New test.
 569
 570 2019-08-09  Corentin Gay  <gay@adacore.com>
 571
 572         * testsuite/ext/random/beta_distribution/operators/serialize.cc,
 573         testsuite/ext/random/hypergeometric_distribution/operators/serialize.cc,
 574         testsuite/ext/random/normal_mv_distribution/operators/serialize.cc,
 575         testsuite/ext/random/triangular_distribution/operators/serialize.cc,
 576         testsuite/ext/random/von_mises_distribution/operators/serialize.cc:
 577         Add call to `VERIFY`.
 578
 579 2019-08-09  Alexandre Oliva <oliva@adacore.com>
 580
 581         * include/ext/random
 582         (normal_mv_distribution::param_type::param_type): New private
 583         ctor taking a decomposed varcov matrix, for use by...
 584         (operator>>): ... this, befriended.
 585         * include/ext/random.tcc (operator>>): Use it.
 586         (normal_mv_distribution::param_type::_M_init_lower): Adjust
 587         member function name in exception message.
 588
 589 2019-08-08  Jonathan Wakely  <jwakely@redhat.com>
 590
 591         P0325R4 to_array from LFTS with updates
 592         * include/experimental/array (to_array): Qualify call to __to_array.
 593         * include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
 594         * include/std/version (__cpp_lib_to_array): Likewise.
 595         * testsuite/23_containers/array/creation/1.cc: New test.
 596         * testsuite/23_containers/array/creation/2.cc: New test.
 597         * testsuite/23_containers/array/creation/3_neg.cc: New test.
 598         * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
 599         Use zero for dg-error line number.
 600
 601 2019-08-06  Jonathan Wakely  <jwakely@redhat.com>
 602
 603         P1651R0 bind_front should not unwrap reference_wrapper
 604         * include/std/functional (bind_front): Don't unwrap reference_wrapper.
 605         * include/std/version (__cpp_lib_bind_front): Update value.
 606         * testsuite/20_util/function_objects/bind_front/1.cc: Fix test for
 607         feature test macro.
 608         * testsuite/20_util/function_objects/bind_front/2.cc: New test.
 609
 610         * include/std/numbers [!__STRICT_ANSI__ && _GLIBCXX_USE_FLOAT128]
 611         (e_v, log2e_v, log10e_v, pi_v, inv_pi_v, inv_sqrtpi_v, ln2_v, ln10_v)
 612         (sqrt2_v, sqrt3_v, inv_sqrt3, egamma_v, phi_v): Add explicit
 613         specializations for __float128.
 614         * testsuite/26_numerics/numbers/float128.cc: New test.
 615
 616 2019-08-04  Gerald Pfeifer  <gerald@pfeifer.com>
 617
 618         * doc/xml/manual/documentation_hacking.xml: doxygen.org is now
 619         doxygen.nl.
 620
 621 2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
 622
 623         Implement C++20 p0202 - Add Constexpr Modifiers to Functions
 624         in <algorithm> and <utility> Headers.
 625         Implement C++20 p1023 - constexpr comparison operators for std::array.
 626         * include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
 627         copy_backward, copy_if, copy_n, equal_range, fill, find_end,
 628         find_if_not, includes, is_heap, is_heap_until, is_partitioned,
 629         is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
 630         none_of, partition_copy, partition_point, remove, remove_if,
 631         remove_copy, remove_copy_if, replace_copy, replace_copy_if,
 632         reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
 633         count_if, equal, find, find_first_of, find_if, for_each, generate,
 634         generate_n, lexicographical_compare, merge, mismatch, replace,
 635         replace_if, search, search_n, set_difference, set_intersection,
 636         set_symmetric_difference, set_union, transform, unique_copy):
 637         Mark constexpr.
 638         * include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
 639         * include/bits/predefined_ops.h (_Iter_less_val::operator(),
 640         _Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
 641         _Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
 642          Use const ref instead of ref arg;
 643         (_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
 644         __iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
 645         _Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
 646         _Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
 647         _Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
 648         __iter_comp_iter): Mark constexpr.
 649         * include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
 650         __search, __search_n_aux, __search_n, __find_end, find_end, all_of,
 651         none_of, any_of, find_if_not, is_partitioned, partition_point,
 652         __remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
 653         copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
 654         __unique, unique, __unique_copy, reverse_copy, rotate_copy,
 655         __unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
 656         __final_insertion_sort, lower_bound, __upper_bound, upper_bound,
 657         __equal_range, equal_range, binary_search, __includes, includes,
 658         __next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
 659         replace_copy_if, __count_if, is_sorted, __is_sorted_until,
 660         is_sorted_until, __is_permutation, is_permutation, for_each, find,
 661         find_if, find_first_of, adjacent_find, count, count_if, search,
 662         search_n, transform, replace, replace_if, generate, generate_n,
 663         unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
 664         set_intersection, __set_difference, set_difference,
 665         __set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
 666         * include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
 667         wrappers around __builtin_memmove and __builtin_memcmp
 668         respectively;
 669         (__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
 670         copy, move, __copy_move_b, __copy_move_backward_a,
 671         __copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
 672         __fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
 673         __lexicographical_compare_impl, __lexicographical_compare,
 674         __lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
 675         __lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
 676         __mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
 677         is_heap): Mark constexpr.
 678         * include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
 679         is_heap): Mark constexpr.
 680         * include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
 681         * include/std/array: Make comparison ops constexpr.
 682         * include/std/utility: Make exchange constexpr.
 683         * include/std/version (__cpp_lib_constexpr_algorithms): New macro.
 684         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
 685         * testsuite/23_containers/array/tuple_interface/
 686         tuple_element_neg.cc: Adjust.
 687         * testsuite/20_util/exchange/constexpr.cc: New.
 688         * testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
 689         * testsuite/25_algorithms/constexpr_macro.cc: New.
 690         * testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
 691         * testsuite/25_algorithms/all_of/constexpr.cc: New.
 692         * testsuite/25_algorithms/any_of/constexpr.cc: New.
 693         * testsuite/25_algorithms/binary_search/constexpr.cc: New.
 694         * testsuite/25_algorithms/copy/constexpr.cc: New.
 695         * testsuite/25_algorithms/copy_backward/constexpr.cc: New.
 696         * testsuite/25_algorithms/copy_if/constexpr.cc: New.
 697         * testsuite/25_algorithms/copy_n/constexpr.cc: New.
 698         * testsuite/25_algorithms/count/constexpr.cc: New.
 699         * testsuite/25_algorithms/count_if/constexpr.cc: New.
 700         * testsuite/25_algorithms/equal/constexpr.cc: New.
 701         * testsuite/25_algorithms/equal_range/constexpr.cc: New.
 702         * testsuite/25_algorithms/fill/constexpr.cc: New.
 703         * testsuite/25_algorithms/fill_n/constexpr.cc: New.
 704         * testsuite/25_algorithms/find/constexpr.cc: New.
 705         * testsuite/25_algorithms/find_end/constexpr.cc: New.
 706         * testsuite/25_algorithms/find_first_of/constexpr.cc: New.
 707         * testsuite/25_algorithms/find_if/constexpr.cc: New.
 708         * testsuite/25_algorithms/find_if_not/constexpr.cc: New.
 709         * testsuite/25_algorithms/for_each/constexpr.cc: New.
 710         * testsuite/25_algorithms/generate/constexpr.cc: New.
 711         * testsuite/25_algorithms/generate_n/constexpr.cc: New.
 712         * testsuite/25_algorithms/is_heap/constexpr.cc: New.
 713         * testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
 714         * testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
 715         * testsuite/25_algorithms/is_permutation/constexpr.cc: New.
 716         * testsuite/25_algorithms/is_sorted/constexpr.cc: New.
 717         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
 718         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
 719         * testsuite/25_algorithms/lower_bound/constexpr.cc: New.
 720         * testsuite/25_algorithms/merge/constexpr.cc: New.
 721         * testsuite/25_algorithms/mismatch/constexpr.cc: New.
 722         * testsuite/25_algorithms/none_of/constexpr.cc: New.
 723         * testsuite/25_algorithms/partition_copy/constexpr.cc: New.
 724         * testsuite/25_algorithms/partition_point/constexpr.cc: New.
 725         * testsuite/25_algorithms/remove/constexpr.cc: New.
 726         * testsuite/25_algorithms/remove_copy/constexpr.cc: New.
 727         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
 728         * testsuite/25_algorithms/remove_if/constexpr.cc: New.
 729         * testsuite/25_algorithms/replace_copy/constexpr.cc: New.
 730         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
 731         * testsuite/25_algorithms/replace_if/constexpr.cc: New.
 732         * testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
 733         * testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
 734         * testsuite/25_algorithms/search/constexpr.cc: New.
 735         * testsuite/25_algorithms/search_n/constexpr.cc: New.
 736         * testsuite/25_algorithms/set_difference/constexpr.cc: New.
 737         * testsuite/25_algorithms/set_intersection/constexpr.cc: New.
 738         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
 739         * testsuite/25_algorithms/set_union/constexpr.cc: New.
 740         * testsuite/25_algorithms/transform/constexpr.cc: New.
 741         * testsuite/25_algorithms/unique/constexpr.cc: New.
 742         * testsuite/25_algorithms/unique_copy/constexpr.cc: New.
 743         * testsuite/25_algorithms/upper_bound/constexpr.cc: New.
 744
 745 2019-07-31  Jonathan Wakely  <jwakely@redhat.com>
 746
 747         * include/std/memory (make_obj_using_allocator): Qualify call to
 748         uses_allocator_construction_args.
 749
 750         P0631R4 Math Constants
 751         * include/Makefile.am: Add new header.
 752         * include/Makefile.in: Regenerate.
 753         * include/precompiled/stdc++.h: Include new header.
 754         * include/std/numbers: New header.
 755         * include/std/version (__cpp_lib_math_constants): Define.
 756         * testsuite/26_numerics/numbers/1.cc: New test.
 757         * testsuite/26_numerics/numbers/2.cc: New test.
 758         * testsuite/26_numerics/numbers/3.cc: New test.
 759         * testsuite/26_numerics/numbers/nonfloat_neg.cc: New test.
 760
 761         * include/std/bit: Add Doxygen comments.
 762
 763         PR libstdc++/91308
 764         * include/bits/unique_ptr.h (unique_ptr::__safe_conversion_up): Remove
 765         constraints on deleter that should only apply to the constructor.
 766         (unique_ptr<T[], D>::__safe_conversion_up): Likewise.
 767         (unique_ptr<T[], D>::unique_ptr(unique_ptr<U, D>&&)): Restore
 768         constraints on deleter here.
 769         * testsuite/20_util/unique_ptr/assign/91308.cc: New test.
 770
 771 2019-07-29  Jonathan Wakely  <jwakely@redhat.com>
 772
 773         PR libstdc++/51333
 774         * libsupc++/cxxabi.h (__gnu_cxx::recursive_init_error): Do not define
 775         constructor inline.
 776         * libsupc++/guard_error.cc (__gnu_cxx::recursive_init_error): Define
 777         constructor.
 778         * testsuite/18_support/51333.cc: New test.
 779
 780 2019-07-28  Gerald Pfeifer  <gerald@pfeifer.com>
 781
 782         * doc/xml/manual/documentation_hacking.xml: Fix broken reference
 783         to the Doxygen manual. Avoid a "here" link on the way.
 784         Fix another broken link to Doxygen docblocks.
 785
 786 2019-07-26  Jonathan Wakely  <jwakely@redhat.com>
 787
 788         * include/std/bit (__cpp_lib_endian): Define.
 789         * include/std/version (__cpp_lib_endian): Define.
 790         * testsuite/26_numerics/endian/2.cc: New.
 791         * testsuite/26_numerics/endian/3.cc: New.
 792         * testsuite/26_numerics/endian/4.cc: New.
 793
 794 2019-07-26  François Dumont  <fdumont@gcc.gnu.org>
 795
 796         * testsuite/util/testsuite_iterators.h
 797         (bidirectional_iterator_wrapper): Fix type comment.
 798         (random_access_iterator_wrapper): Likewise.
 799
 800 2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
 801
 802         * include/std/bit (endian): Move definition here as per P1612R1.
 803         * include/std/type_traits (endian): Remove definition from here.
 804         * testsuite/20_util/endian/1.cc: Rename to ...
 805         * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
 806
 807 2019-07-25  Martin Liska  <mliska@suse.cz>
 808             Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
 809
 810         PR c++/23383
 811         * testsuite/ext/bitmap_allocator/check_delete.cc: Add
 812         -fno-allocation-dce.
 813         * testsuite/ext/bitmap_allocator/check_new.cc: Likewise.
 814         * testsuite/ext/new_allocator/check_delete.cc: Likewise.
 815         * testsuite/ext/new_allocator/check_new.cc: Likewise.
 816
 817 2019-07-22  Jonathan Wakely  <jwakely@redhat.com>
 818
 819         * testsuite/26_numerics/bit/bitops.count/*: Rename to ...
 820         * testsuite/26_numerics/bit/bit.count/*: Here.
 821
 822         * include/std/bit (__rotl, __rotr): Change second parameter from
 823         unsigned int to int and handle negative values.
 824         (rotl, rotr): Remove check for __STRICT_ANSI__. Change second
 825         parameter from unsigned int to int. Add nodiscard attribute.
 826         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
 827         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
 828         shifts.
 829         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
 830         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
 831         shifts.
 832
 833         * include/std/bit (__ceil2): Make unrepresentable results undefined,
 834         as per P1355R2. Add debug assertion. Perform one left shift, not two,
 835         so that out of range values cause undefined behaviour. Ensure that
 836         shift will still be undefined if left operand is promoted.
 837         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Replace checks for
 838         unrepresentable values with checks that they are not core constant
 839         expressions.
 840         * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: New test.
 841
 842 2019-07-19  François Dumont  <fdumont@gcc.gnu.org>
 843
 844         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): Fix
 845         sized deallocation size computation.
 846
 847 2019-07-19  Andreas Schwab  <schwab@linux-m68k.org>
 848
 849         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
 850
 851 2019-07-18  François Dumont  <fdumont@gcc.gnu.org>
 852
 853         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
 854         (~_Temporary_buffer()): Use latter.
 855         (_Temporary_buffer(_FIterator, size_type)): Likewise.
 856
 857 2019-07-17  Andreas Schwab  <schwab@suse.de>
 858
 859         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
 860
 861 2019-07-16  Jason Merrill  <jason@redhat.com>
 862
 863         * include/std/memory (uses_allocator_construction_args): Add parens
 864         around constraint.
 865
 866 2019-07-12  Jonathan Wakely  <jwakely@redhat.com>
 867
 868         * testsuite/29_atomics/atomic_float/1.cc: Fix comment.
 869
 870         * include/experimental/string_view (__detail::__idt): Remove.
 871         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
 872         Use __type_identity_t instead of __detail::__idt;
 873         * include/std/string_view (__detail::__idt): Remove.
 874         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
 875         Use __type_identity_t instead of __detail::__idt;
 876         * include/std/type_traits (__type_identity_t): New alias template.
 877
 878         * doc/xml/manual/status_cxx2020.xml: Update status for atomic_ref
 879         and floating point atomics.
 880
 881 2019-07-11  Jonathan Wakely  <jwakely@redhat.com>
 882
 883         * doc/xml/manual/configure.xml: Improve documentation of
 884         --enable-libstdcxx-time option.
 885
 886         * include/bits/atomic_base.h (__atomic_impl): New namespace for
 887         wrappers around atomic built-ins.
 888         (__atomic_float, __atomic_ref): New class templates for use as base
 889         classes.
 890         * include/std/atomic (atomic<float>, atomic<double>)
 891         (atomic<long double>): New explicit specializations.
 892         (atomic_ref): New class template.
 893         (__cpp_lib_atomic_ref): Define.
 894         * include/std/version (__cpp_lib_atomic_ref): Define.
 895         * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error.
 896         * testsuite/29_atomics/atomic_float/1.cc: New test.
 897         * testsuite/29_atomics/atomic_float/requirements.cc: New test.
 898         * testsuite/29_atomics/atomic_ref/deduction.cc: New test.
 899         * testsuite/29_atomics/atomic_ref/float.cc: New test.
 900         * testsuite/29_atomics/atomic_ref/generic.cc: New test.
 901         * testsuite/29_atomics/atomic_ref/integral.cc: New test.
 902         * testsuite/29_atomics/atomic_ref/pointer.cc: New test.
 903         * testsuite/29_atomics/atomic_ref/requirements.cc: New test.
 904
 905 2019-07-06  Jonathan Wakely  <jwakely@redhat.com>
 906
 907         * include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace
 908         throw() with _GLIBCXX_NOTHROW.
 909         (__atomic_add_dispatch): Return after performing atomic increment.
 910
 911 2019-07-05  Jonathan Wakely  <jwakely@redhat.com>
 912
 913         * include/ext/atomicity.h [_GLIBCXX_ATOMIC_BUILTINS] (__atomic_add)
 914         (__exchange_and_add): Replace static specifier with always_inline
 915         attribute.
 916         (__exchange_and_add_single, __atomic_add_single): Likewise.
 917         (__exchange_and_add_dispatch, __atomic_add_dispatch): Likewise. Also
 918         combine !__gthread_active_p() and !__GTHREADS branches.
 919
 920 2019-07-03  Jonathan Wakely  <jwakely@redhat.com>
 921
 922         PR libstdc++/91067
 923         * acinclude.m4 (libtool_VERSION): Bump to 6:27:0.
 924         * configure: Regenerate.
 925         * config/abi/pre/gnu.ver (GLIBCXX_3.4.27): Add new version. Export
 926         missing symbols.
 927         * testsuite/27_io/filesystem/iterators/91067.cc: New test.
 928         * testsuite/util/testsuite_abi.cc: Add new symbol version.
 929
 930 2019-07-02  Jonathan Wakely  <jwakely@redhat.com>
 931
 932         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_LAUNDER)
 933         (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Use __has_builtin
 934         instead of __is_identifier to detect Clang support.
 935
 936 2019-07-02  Jim Wilson  <jimw@sifive.com>
 937
 938         * configure.ac (BUILD_PDF): Also test for doxygen, dot, xsltproc,
 939         and xmllint.
 940         * configure: Regenerate.
 941
 942 2019-06-27  Jonathan Wakely  <jwakely@redhat.com>
 943
 944         PR libstdc++/91012
 945         * src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
 946         for the what_arg parameters.
 947         (filesystem_error::filesystem_error): Pass system_error::what() to
 948         the _Impl constructor.
 949         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
 950         filesystem_error::what() contains system_error::what().
 951
 952 2019-06-26  Jonathan Wakely  <jwakely@redhat.com>
 953
 954         * include/std/charconv (chars_format): Define bitmask type.
 955         * testsuite/20_util/to_chars/chars_format.cc: New test.
 956
 957         * include/bits/fs_path.h (path::__is_encoded_char): Use __is_one_of.
 958         * include/std/bit (_If_is_unsigned_integer_type): Remove.
 959         (_If_is_unsigned_integer): Use __is_unsigned_integer.
 960         (rotl(byte, unsigned), rotr(byte, unsigned), countl_zero(byte))
 961         (countl_one(byte), countr_zero(byte), countr_one(byte))
 962         (popcount(byte), ispow2(byte), ceil2(byte), floor2(byte))
 963         (log2p1(byte)): Remove.
 964         * include/std/charconv (__detail::__is_one_of): Move to <type_traits>.
 965         (__detail::__is_int_to_chars_type): Remove.
 966         (__detail::__integer_to_chars_result_type): Use __is_signed_integer
 967         and __is_unsigned_integer.
 968         * include/std/type_traits (__is_one_of): Move here from <charconv>.
 969         (__is_signed_integer, __is_unsigned_integer): New helpers.
 970         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Remove test for
 971         std::byte overload.
 972         * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
 973         * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
 974         * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
 975         * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Likewise.
 976         * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
 977         * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
 978         * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
 979         * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.
 980         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Likewise.
 981         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Likewise.
 982
 983 2019-06-25  Jonathan Wakely  <jwakely@redhat.com>
 984
 985         * include/std/numeric (midpoint(T, T)): Avoid std::abs in constexpr
 986         function.
 987
 988 2019-06-25  Jakub Jelinek  <jakub@redhat.com>
 989
 990         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
 991         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
 992         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
 993         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
 994
 995 2019-06-24  Jonathan Wakely  <jwakely@redhat.com>
 996
 997         * include/std/numeric (midpoint(T, T)): Change implementation for
 998         floating-point types to avoid incorrect rounding of denormals.
 999         * testsuite/26_numerics/midpoint/floating.cc: Add check for correct
1000         rounding with denormals.
1001         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers.
1002         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
1003
1004         * testsuite/18_support/headers/cfloat/values_c++17.cc: New test.
1005
1006 2019-06-20  Jonathan Wakely  <jwakely@redhat.com>
1007
1008         * acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
1009         stage of bootstrap.
1010         * configure: Regenerate.
1011
1012         * include/std/variant (_Variant_storage, _Extra_visit_slot_needed):
1013         Qualify calls to __never_valueless.
1014
1015         * doc/xml/manual/status_cxx2017.xml: Fix outdated reference to
1016         C++17 working draft.
1017
1018         * testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
1019         vector<bool> for test.
1020         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1021
1022 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1023
1024         * include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
1025         private.
1026         (istream_iterator::_M_read()): Do not check stream state before
1027         attempting extraction. Set stream pointer to null when extraction
1028         fails (P0738R2).
1029         (operator==(const istream_iterator&, const istream_iterator&)): Change
1030         to be a hidden friend of istream_iterator.
1031         (operator!=(const istream_iterator&, const istream_iterator&)):
1032         Likewise.
1033         (ostream_iterator::ostream_iterator()): Add default constructor.
1034         (ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
1035         addressof.
1036         * testsuite/24_iterators/istream_iterator/1.cc: New test.
1037         * testsuite/24_iterators/ostream_iterator/1.cc: New test.
1038         * testsuite/24_iterators/ostream_iterator/70766.cc: Also check
1039         constructor taking a string.
1040         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
1041         New test.
1042
1043 2019-06-19  Michael Weghorn  <m.weghorn@posteo.de>
1044             Jonathan Wakely  <jwakely@redhat.com>
1045
1046         PR libstdc++/90945
1047         * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
1048         values of type bool for vector<bool> elements.
1049         * testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
1050         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1051
1052 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1053
1054         PR libstdc++/90920 partially revert r263433
1055         * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
1056         (rotate): Remove checks.
1057         * testsuite/25_algorithms/rotate/90920.cc: New test.
1058
1059         * include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
1060         category used in invocable check.
1061         (reduce(Iter, Iter, T)): Pass initial value as rvalue.
1062         * testsuite/26_numerics/reduce/2.cc: New test.
1063
1064 2019-06-18  Jonathan Wakely  <jwakely@redhat.com>
1065
1066         * include/bits/algorithmfwd.h: Change title of doc group.
1067         * include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
1068         P0024R2.
1069         * include/bits/stl_numeric.h: Define doc group and add algos to it.
1070         * include/std/numeric (__is_random_access_iter): New internal trait.
1071         (reduce, transform_reduce, exclusive_scan, inclusive_scan)
1072         (transform_exclusive_scan, transform_inclusive_scan): Likewise.
1073         * testsuite/25_algorithms/for_each/for_each_n.cc: New test.
1074         * testsuite/26_numerics/exclusive_scan/1.cc: New test.
1075         * testsuite/26_numerics/inclusive_scan/1.cc: New test.
1076         * testsuite/26_numerics/reduce/1.cc: New test.
1077         * testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
1078         * testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
1079         * testsuite/26_numerics/transform_reduce/1.cc: New test.
1080         * testsuite/util/testsuite_iterators.h (test_container::size()): New
1081         member function.
1082
1083         * include/c_global/cstddef (std::byte): Perform arithmetic operations
1084         in unsigned int to avoid promotion (LWG 2950).
1085
1086 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1087
1088         * testsuite/20_util/allocator/1.cc: Add sized delete, which fixes a
1089         failure on AIX.
1090
1091         * include/c_global/cmath (__lerp, lerp): Add noexcept (LWG 3201).
1092
1093         PR libstdc++/90281 Fix string conversions for filesystem::path
1094         * include/bits/fs_path.h (u8path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
1095         Use codecvt_utf8_utf16 instead of codecvt_utf8. Use
1096         __str_codecvt_in_all to fail for partial conversions and throw on
1097         error.
1098         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS && _GLIBCXX_USE_CHAR8_T]
1099         (path::_Cvt<char8_t>): Add explicit specialization.
1100         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Remove
1101         overloads.
1102         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1103         if-constexpr instead of dispatching to _S_wconvert. Use codecvt
1104         instead of codecvt_utf8. Use __str_codecvt_in_all and
1105         __str_codecvt_out_all.
1106         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1107         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1108         (path::_S_str_convert) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1109         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1110         with allocator. Use __str_codecvt_out_all. Fallthrough to POSIX code
1111         after converting to UTF-8.
1112         (path::_S_str_convert): Use codecvt instead of codecvt_utf8. Use
1113         __str_codecvt_in_all.
1114         (path::string): Fix initialization of string types with different
1115         allocators.
1116         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1117         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1118         * include/bits/locale_conv.h (__do_str_codecvt): Reorder static and
1119         runtime conditions.
1120         (__str_codecvt_out_all, __str_codecvt_in_all): New functions that
1121         return false for partial conversions.
1122         * include/experimental/bits/fs_path.h (u8path):
1123         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Implement correctly for mingw.
1124         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Add
1125         missing handling for char8_t. Use codecvt and codecvt_utf8_utf16
1126         instead of codecvt_utf8. Use __str_codecvt_in_all and
1127         __str_codecvt_out_all.
1128         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1129         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1130         (path::string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1131         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1132         with allocator. Use __str_codecvt_out_all and __str_codecvt_in_all.
1133         (path::string) [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1134         __str_codecvt_in_all.
1135         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1136         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1137         * src/c++17/fs_path.cc (path::_S_convert_loc): Use
1138         __str_codecvt_in_all.
1139         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
1140         * testsuite/27_io/filesystem/path/construct/90281.cc: New test.
1141         * testsuite/27_io/filesystem/path/factory/u8path.cc: New test.
1142         * testsuite/27_io/filesystem/path/native/string.cc: Test with empty
1143         strings and with Unicode characters outside the basic multilingual
1144         plane.
1145         * testsuite/27_io/filesystem/path/native/alloc.cc: New test.
1146         * testsuite/experimental/filesystem/path/construct/90281.cc: New test.
1147         * testsuite/experimental/filesystem/path/factory/u8path.cc: New test.
1148         * testsuite/experimental/filesystem/path/native/alloc.cc: New test.
1149         * testsuite/experimental/filesystem/path/native/string.cc: Test with
1150         empty strings and with Unicode characters outside the basic
1151         multilingual plane.
1152
1153 2019-06-17  François Dumont  <fdumont@gcc.gnu.org>
1154             Jonathan Wakely  <jwakely@redhat.com>
1155
1156         * include/bits/hashtable.h (struct _Hashtable::_Scoped_node): New type.
1157         (_Hashtable::_M_insert_unique_node): Add key_type parameter. Don't
1158         deallocate node if insertion fails.
1159         (_Hashtable::_M_insert_multi_node): Likewise.
1160         (_Hashtable::_M_reinsert_node): Pass additional key argument.
1161         (_Hashtable::_M_reinsert_node_multi): Likewise. Remove FIXME.
1162         (_Hashtable::_M_extract_node(size_t, __node_base*)): New function.
1163         (_Hashtable::extract(const_iterator)): Use _M_extract_node.
1164         (_Hashtable::extract(const _Key&)): Likewise.
1165         (_Hashtable::_M_merge_unique): Pass additional key argument.
1166         (_Hashtable::_M_emplace<Args>(true_type, Args&&...)): Likewise. Use
1167         _Scoped_node.
1168         (_Hashtable::_M_insert): Likewise.
1169         * include/bits/hashtable_policy.h (_Map_base::operator[]): Likewise.
1170         (_Hashtable_alloc): Add comments to functions with misleading names.
1171
1172 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1173
1174         * testsuite/20_util/bad_function_call/what.cc: Include <string> header
1175         for std::string.
1176         * testsuite/20_util/shared_ptr/cons/weak_ptr_expired.cc: Likewise.
1177         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Include <memory>
1178         header for std::allocator.
1179         * testsuite/23_containers/array/tuple_interface/tuple_element.cc: Add
1180         using-declaration for std::size_t.
1181         * testsuite/23_containers/array/tuple_interface/tuple_size.cc:
1182         Likewise.
1183         * testsuite/23_containers/deque/cons/55977.cc: Include <istream> for
1184         std::istream.
1185         * testsuite/23_containers/vector/cons/55977.cc: Likewise.
1186         * testsuite/experimental/map/erasure.cc: Include <string> for
1187         std::string.
1188         * testsuite/experimental/unordered_map/erasure.cc: Likewise.
1189
1190 2019-06-14  Jonathan Wakely  <jwakely@redhat.com>
1191
1192         * include/experimental/type_traits (experimental::nonesuch): Use
1193         pragma to disable -Wctor-dtor-privacy warnings.
1194         * include/std/type_traits (__is_convertible_helper<From, To, false>)
1195         (__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
1196
1197         * include/std/version (__cpp_lib_bind_front): Add missing macro.
1198
1199 2019-06-12  Jonathan Wakely  <jwakely@redhat.com>
1200
1201         * include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
1202         * include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
1203         * include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
1204         * testsuite/25_algorithms/pstl/feature_test.cc: New test.
1205
1206         * include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
1207         (variant::emplace): Change static_assert messages from "should be"
1208         to "must be".
1209         (hash<monostate>::operator()): Remove name of unused parameter.
1210
1211         * include/std/mutex (scoped_lock::~scoped_lock()): Use fold
1212         expression.
1213
1214         * include/Makefile.am: Add new <bits/charconv.h> header.
1215         * include/Makefile.in: Regenerate.
1216         * include/bits/basic_string.h (to_string(int), to_string(unsigned))
1217         (to_string(long), to_string(unsigned long), to_string(long long))
1218         (to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
1219         * include/bits/charconv.h: New header.
1220         (__detail::__to_chars_len): Move here from <charconv>.
1221         (__detail::__to_chars_10_impl): New function extracted from
1222         __detail::__to_chars_10.
1223         * include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
1224         (__to_chars_unsigned_type): New class template that reuses
1225         __make_unsigned_selector_base::__select to pick a type.
1226         (__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
1227         (__detail::__to_chars_len): Move to new header.
1228         (__detail::__to_chars_10): Add inline specifier. Move code doing the
1229         output to __detail::__to_chars_10_impl and call that.
1230         * include/std/version (__cpp_lib_to_chars): Add, but comment out.
1231         * testsuite/21_strings/basic_string/numeric_conversions/char/
1232         to_string.cc: Fix reference in comment. Remove unused variable.
1233         * testsuite/21_strings/basic_string/numeric_conversions/char/
1234         to_string_int.cc: New test.
1235
1236 2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1237
1238         Fix ConstexprIterator requirements tests - No constexpr algorithms!
1239         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1240         Replace copy with hand-rolled loop.
1241         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1242         Ditto.
1243
1244 2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>
1245
1246         Test for C++20 p0858 - ConstexprIterator requirements.
1247         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1248         New test.
1249         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1250         New test.
1251
1252 2019-06-07  Thomas Rodgers  <trodgers@redhat.com>
1253
1254         Rename PSTL macro's consistent with libstdc++ (and llvm upstream
1255         project) standards.
1256         * include/bits/c++config: Rename all macros of the form __PSTL* to
1257         _PSTL*.
1258         * include/std/algorithm: Likewise.
1259         * include/std/execution: Likewise.
1260         * include/std/numeric: Likewise.
1261         * include/std/memory: Likewise.
1262         * include/pstl/glue_memory_impl.h: Likewise.
1263         * include/pstl/numeric_impl.h: Likewise.
1264         * include/pstl/glue_memory_defs.h: Likewise.
1265         * include/pstl/execution_defs.h: Likewise.
1266         * include/pstl/utils.h: Likewise.
1267         * include/pstl/algorithm_fwd.h: Likewise.
1268         * include/pstl/unseq_backend_simd.h: Likewise.
1269         * include/pstl/glue_execution_defs.h: Likewise.
1270         * include/pstl/algorithm_impl.h: Likewise.
1271         * include/pstl/parallel_impl.h: Likewise.
1272         * include/pstl/memory_impl.h: Likewise.
1273         * include/pstl/glue_numeric_defs.h: Likewise.
1274         * include/pstl/parallel_backend_utils.h: Likewise.
1275         * include/pstl/glue_algorithm_defs.h: Likewise.
1276         * include/pstl/parallel_backend.h: Likewise.
1277         * include/pstl/glue_numeric_impl.h: Likewise.
1278         * include/pstl/parallel_backend_tbb.h: Likewise.
1279         * include/pstl/numeric_fwd.h: Likewise.
1280         * include/pstl/glue_algorithm_impl.h: Likewise.
1281         * include/pstl/execution_impl.h: Likewise.
1282         * include/pstl/pstl_config.h: Likewise.
1283         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1284         * testsuite/util/pstl/test_utils.h: Likewise.
1285         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
1286         Likewise.
1287         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
1288         Likewise.
1289         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
1290         Likewise.
1291         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
1292         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
1293         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
1294         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
1295         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
1296         Likewise.
1297         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
1298         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
1299         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
1300         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
1301         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
1302         Likewise.
1303         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
1304         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
1305         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
1306         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
1307         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
1308         Likewise.
1309         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
1310         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
1311         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
1312         Likewise.
1313         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
1314         Likewise.
1315         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
1316         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
1317         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
1318         Likewise.
1319         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
1320         Likewise.
1321         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
1322         Likewise.
1323         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
1324         Likewise.
1325         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
1326         Likewise.
1327         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
1328         Likewise.
1329         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
1330         Likewise.
1331         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
1332         Likewise.
1333         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
1334         Likewise.
1335         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
1336         Likewise.
1337         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
1338         Likewise.
1339         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.
1340
1341         Rename header guards to be consistent with upstream project's
1342         conventions.
1343         * include/pstl/glue_memory_impl.h: Rename all macros of the form
1344         _PSTL_(.*)_H to _PSTL_\U\1_H.
1345         * include/pstl/numeric_impl.h: Likewise.
1346         * include/pstl/glue_memory_defs.h: Likewise.
1347         * include/pstl/execution_defs.h: Likewise.
1348         * include/pstl/utils.h: Likewise.
1349         * include/pstl/algorithm_fwd.h: Likewise.
1350         * include/pstl/unseq_backend_simd.h: Likewise.
1351         * include/pstl/glue_execution_defs.h: Likewise.
1352         * include/pstl/algorithm_impl.h: Likewise.
1353         * include/pstl/parallel_impl.h: Likewise.
1354         * include/pstl/memory_impl.h: Likewise.
1355         * include/pstl/glue_numeric_defs.h: Likewise.
1356         * include/pstl/parallel_backend_utils.h: Likewise.
1357         * include/pstl/glue_algorithm_defs.h: Likewise.
1358         * include/pstl/parallel_backend.h: Likewise.
1359         * include/pstl/glue_numeric_impl.h: Likewise.
1360         * include/pstl/parallel_backend_tbb.h: Likewise.
1361         * include/pstl/numeric_fwd.h: Likewise.
1362         * include/pstl/glue_algorithm_impl.h: Likewise.
1363         * include/pstl/execution_impl.h: Likewise.
1364         * include/pstl/pstl_config.h: Likewise.
1365         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1366
1367         Synchronize libstdc++ parallel algorithms with upstream
1368         project.
1369         * include/pstl/algorithm_fwd.h: Synchronize with
1370         upstream PSTL project.
1371         * include/pstl/algorithm_impl.h: Likewise.
1372         * include/pstl/execution_defs.h: Likewise.
1373         * include/pstl/execution_impl.h: Likewise.
1374         * include/pstl/glue_algorithm_impl.h: Likewise.
1375         * include/pstl/glue_execution_defs.h: Likewise.
1376         * include/pstl/numeric_fwd.h: Likewise.
1377         * include/pstl/numeric_impl.h: Likewise.
1378         * include/pstl/parallel_backend.h: Likewise.
1379         * include/pstl/pstl_config.h: Likewise.
1380         * include/pstl/unseq_backend_simd.h: Likewise.
1381         * include/pstl/parallel_backend_serial.h: New file.
1382         * include/Makefile.am (pstl_headers): Add
1383         parallel_backend_serial.h.
1384         * include/Makefile.in: Regenerate.
1385
1386         Clean up non-conforming names
1387         * include/pstl/algorithm_impl.h (__parallel_set_union_op):
1388         Uglfiy copy_range1 and copy_range2
1389         (__pattern_walk2_n): Rename local n to __n
1390         * include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
1391         Rename parameter _T to _Tp.
1392
1393         Integrate non-TBB serial backend support
1394         * include/bits/c++config: Adjust TBB detection logic to select serial
1395         PSTL backend if no TBB present.
1396         * testsuite/utils/pstl/test_utils.h: Remove check for
1397         _PSTL_USE_PAR_POLICIES
1398
1399 2019-06-07  Jonathan Wakely  <jwakely@redhat.com>
1400
1401         * testsuite/24_iterators/container_access.cc: Move dg-options before
1402         dg-do directive so the target check uses the -std option.
1403
1404         PR libstdc++/90770
1405         * configure: Regenerate.
1406         * src/Makefile.am (stamp-debug): Also test for missing makefile.
1407         * src/Makefile.in: Regenerate.
1408
1409 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
1410
1411         * include/std/array: Do not include <stdexcept>.
1412         * include/std/optional: Include <exception> and
1413         <bits/exception_defines.h> instead of <stdexcept>.
1414         * testsuite/20_util/function_objects/searchers.cc: Include <cctype>
1415         for std::isalnum.
1416         * testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
1417         std::allocator.
1418         * testsuite/23_containers/map/erasure.cc: Include <string>.
1419         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
1420
1421         * testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
1422         dg-prune-output for different C++98 diagnostic.
1423         * testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
1424         Likewise.
1425         * testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
1426         Likewise.
1427         * testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
1428         Likewise.
1429         * testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
1430         Likewise.
1431         * testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
1432         Likewise.
1433         * testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
1434         Likewise.
1435         * testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
1436         Likewise.
1437         * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
1438         Likewise.
1439         * testsuite/23_containers/vector/requirements/dr438/
1440         constructor_1_neg.cc: Likewise.
1441         * testsuite/23_containers/vector/requirements/dr438/
1442         constructor_2_neg.cc: Likewise.
1443         * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
1444         Likewise.
1445         * testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.
1446
1447         * testsuite/23_containers/unordered_map/requirements/debug_container.cc:
1448         Do not test allocator rebinding extension for C++2a.
1449         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
1450         dg-do directive for C++17 and C++2a.
1451
1452         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1453         1_c++0x.cc: Remove redundant test.
1454         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1455         2.cc: Use target selector instead of preprocessor condition.
1456         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1457         3.cc: Do not run test for C++2a.
1458         * testsuite/23_containers/forward_list/requirements/
1459         explicit_instantiation/3.cc: Likewise.
1460         * testsuite/23_containers/forward_list/requirements/
1461         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1462         for C++2a.
1463         * testsuite/23_containers/list/requirements/explicit_instantiation/
1464         1_c++0x.cc: Remove redundant test.
1465         * testsuite/23_containers/list/requirements/explicit_instantiation/
1466         2.cc: Use target selector instead of preprocessor condition.
1467         * testsuite/23_containers/list/requirements/explicit_instantiation/
1468         3.cc: Do not run test for C++2a.
1469         * testsuite/23_containers/list/requirements/explicit_instantiation/
1470         5.cc: Do not test allocator rebinding extension for C++2a.
1471         * testsuite/23_containers/map/requirements/explicit_instantiation/
1472         1_c++0x.cc: Remove redundant test.
1473         * testsuite/23_containers/map/requirements/explicit_instantiation/
1474         2.cc: Adjust comment.
1475         * testsuite/23_containers/map/requirements/explicit_instantiation/
1476         3.cc: Do not run test for C++2a.
1477         * testsuite/23_containers/map/requirements/explicit_instantiation/
1478         5.cc: Do not test allocator rebinding extension for C++2a.
1479         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1480         1_c++0x.cc: Remove redundant test.
1481         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1482         3.cc: Do not run test for C++2a.
1483         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1484         5.cc: Do not test allocator rebinding extension for C++2a.
1485         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1486         3.cc: Do not run test for C++2a.
1487         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1488         5.cc: Do not test allocator rebinding extension for C++2a.
1489         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
1490         Do not run test for C++2a.
1491         * testsuite/23_containers/set/requirements/explicit_instantiation/
1492         1_c++0x.cc: Remove redundant test.
1493         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
1494         Do not test allocator rebinding extension for C++2a.
1495         * testsuite/23_containers/unordered_map/requirements/
1496         explicit_instantiation/3.cc: Likewise.
1497         * testsuite/23_containers/unordered_map/requirements/
1498         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1499         for C++2a.
1500         * testsuite/23_containers/unordered_multimap/requirements/
1501         explicit_instantiation/3.cc: Do not run test for C++2a.
1502         * testsuite/23_containers/unordered_multimap/requirements/
1503         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1504         for C++2a.
1505         * testsuite/23_containers/unordered_multiset/requirements/
1506         explicit_instantiation/3.cc: Do not run test for C++2a.
1507         * testsuite/23_containers/unordered_multiset/requirements/
1508         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1509         for C++2a.
1510         * testsuite/23_containers/unordered_set/requirements/
1511         explicit_instantiation/3.cc: Do not run test for C++2a.
1512         * testsuite/23_containers/unordered_set/requirements/
1513         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1514         for C++2a.
1515         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
1516         2.cc: Remove redundant test.
1517         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
1518         3.cc: Do not run test for C++2a.
1519         * testsuite/23_containers/vector/requirements/explicit_instantiation/
1520         3.cc: Likewise.
1521
1522         * include/std/type_traits (is_empty, is_polymorphic, is_final)
1523         (is_abstract, is_aggregate): Remove static_assert.
1524         * testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
1525         from builtin only.
1526         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
1527         missing -std=gnu++17 option.
1528         * testsuite/20_util/is_empty/incomplete_neg.cc: New test.
1529         * testsuite/20_util/is_final/incomplete_neg.cc: New test.
1530         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
1531         from builtin only.
1532
1533         * testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
1534         * testsuite/18_support/set_unexpected.cc: Likewise.
1535         * testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
1536         void.
1537         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
1538         function to be valid in C++11.
1539         * testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
1540         * testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
1541         include Library Fundamentals or Networking headers in C++11 mode.
1542         * testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.
1543
1544         * include/std/tuple (_TC): Replace with _TupleConstraints.
1545         (_TupleConstraints): New helper for SFINAE constraints, with more
1546         expressive member functions to reduce duplication when used.
1547         (tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
1548         (tuple::_TCC): Replace dummy type parameter with bool non-type
1549         parameter that can be used to check the pack size.
1550         (tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
1551         (tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
1552         checking constraints in constructors.
1553         (tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
1554         New SFINAE helpers.
1555         (tuple::tuple): Use new helpers to reduce repitition in constraints.
1556         (tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
1557         (tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
1558         (tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
1559         (tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
1560         constraints in constructors.
1561         (tuple::__is_alloc_arg()): New SFINAE helpers.
1562         (tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
1563         constraints.
1564         (tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
1565         * testsuite/20_util/tuple/cons/90700.cc: New test.
1566         * testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
1567         to meet new constraint on allocator-extended default constructor.
1568
1569 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
1570
1571         * include/bits/stl_map.h (map): Disable static assert for C++98 mode.
1572         * include/bits/stl_multimap.h (multimap): Likewise.
1573
1574 2019-06-03  François Dumont  <fdumont@gcc.gnu.org>
1575
1576         Rename variables and cleanup comments.
1577         * include/bits/hashtable_policy.h
1578         * include/bits/hashtable.h
1579
1580 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
1581
1582         * doc/xml/manual/status_cxx2020.xml: Add missing row for P0920R2.
1583         Fix bgcolor for P0340R3.
1584         * doc/html/*: Regenerate.
1585
1586         PR libstdc++/90686
1587         * doc/xml/manual/status_cxx2014.xml: Document what's missing from
1588         <experimental/memory_resource>.
1589         * doc/xml/manual/status_cxx2020.xml: Document status of P1285R0,
1590         P0339R6, P0340R3, P1164R1 and P1357R1.
1591         * doc/html/*: Regenerate.
1592
1593         * doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
1594         * include/bits/forward_list.h [__cplusplus > 201703]: Enable
1595         allocator::value_type assertion for C++2a.
1596         * include/bits/hashtable.h: Likewise.
1597         * include/bits/stl_deque.h: Likewise.
1598         * include/bits/stl_list.h: Likewise.
1599         * include/bits/stl_map.h: Likewise.
1600         * include/bits/stl_multimap.h: Likewise.
1601         * include/bits/stl_multiset.h: Likewise.
1602         * include/bits/stl_set.h: Likewise.
1603         * include/bits/stl_vector.h: Likewise.
1604         * testsuite/23_containers/deque/48101-3_neg.cc: New test.
1605         * testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
1606         * testsuite/23_containers/list/48101-3_neg.cc: New test.
1607         * testsuite/23_containers/map/48101-3_neg.cc: New test.
1608         * testsuite/23_containers/multimap/48101-3_neg.cc: New test.
1609         * testsuite/23_containers/multiset/48101-3_neg.cc: New test.
1610         * testsuite/23_containers/set/48101-3_neg.cc: New test.
1611         * testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
1612         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
1613         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
1614         * testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
1615         * testsuite/23_containers/vector/48101-3_neg.cc: New test.
1616
1617 2019-05-31  Gerald Pfeifer  <gerald@pfeifer.com>
1618
1619         * doc/xml/manual/allocator.xml: Move hoard.org back to http.
1620
1621 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
1622
1623         * include/std/tuple (tuple<>): Add noexcept to allocator-extended
1624         constructors.
1625         (tuple<T1, T2>::__nothrow_default_constructible()): New helper
1626         function.
1627         (tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.
1628
1629 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
1630
1631         * src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.
1632
1633         PR libstdc++/90682
1634         * libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
1635         definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
1636         * libsupc++/eh_term_handler.h: New header defining
1637         _GLIBCXX_DEFAULT_TERM_HANDLER.
1638         * libsupc++/eh_terminate.cc: Include eh_term_handler.h.
1639         (set_terminate): Restore default handler when argument is null.
1640         (set_unexpected): Likewise.
1641         * testsuite/18_support/set_terminate.cc: New test.
1642         * testsuite/18_support/set_unexpected.cc: New test.
1643
1644         * include/backward/hashtable.h (size_t, ptrdiff_t)
1645         (forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
1646         (distance, vector, pair, __iterator_category): Remove
1647         using-declarations that add these names to namespace __gnu_cxx.
1648         * include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
1649         * include/ext/debug_allocator.h (size_t): Likewise.
1650         * include/ext/functional (size_t, unary_function, binary_function)
1651         (mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
1652         Likewise.
1653         * include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
1654         * include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
1655         * include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
1656         * include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
1657         * include/ext/numeric (iota): Fix outdated comment.
1658         * include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
1659         * include/ext/rb_tree (_Rb_tree, allocator): Likewise.
1660         * include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
1661         * include/ext/ropeimpl.h (size_t, printf, basic_ostream)
1662         (__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
1663         Likewise.
1664         * include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
1665         (allocator, __true_type, __false_type): Likewise.
1666
1667 2019-05-31  Antony Polukhin  <antoshkka@gmail.com>
1668
1669         PR libstdc++/71579
1670         * include/std/type_traits __type_identity, __is_complete_or_unbounded):
1671         New helpers for checking preconditions in traits.
1672         (is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
1673         (is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
1674         (is_destructible, is_nothrow_destructible, is_constructible)
1675         (is_default_constructible, is_copy_constructible)
1676         (is_move_constructible, is_nothrow_default_constructible)
1677         (is_nothrow_constructible, is_nothrow_copy_constructible)
1678         (is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
1679         (is_nothrow_assignable, is_nothrow_copy_assignable)
1680         (is_nothrow_move_assignable, is_trivially_constructible)
1681         (is_trivially_copy_constructible, is_trivially_move_constructible)
1682         is_trivially_assignable, is_trivially_copy_assignable)
1683         (is_trivially_move_assignable, is_trivially_destructible)
1684         (alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
1685         (is_invocable_r, is_nothrow_invocable)
1686         (has_unique_object_representations, is_aggregate): Add static_asserts
1687         to make sure that type traits are not misused with incomplete types.
1688         (__is_constructible_impl, __is_nothrow_default_constructible_impl)
1689         (__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
1690         base characteristics without assertions that can be reused in other
1691         traits.
1692         * testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
1693         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
1694         test.
1695         * testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
1696         * testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
1697         * testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
1698         * testsuite/20_util/is_class/value.cc: Check incomplete type.
1699         * testsuite/20_util/is_function/value.cc: Likewise.
1700         * testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
1701         * testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
1702         test.
1703         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
1704         * testsuite/20_util/is_reference/value.cc: Check incomplete types.
1705         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
1706         * testsuite/20_util/is_union/value.cc: Likewise.
1707         * testsuite/20_util/is_void/value.cc: Likewise.
1708         * testsuite/util/testsuite_tr1.h: Add incomplete union type.
1709
1710 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
1711
1712         * include/bits/random.h (random_device::_M_init(const char*, size_t)):
1713         Add new private member function.
1714         * src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
1715         (random_device::_M_init_pretr1(const string&)): Call new private
1716         member with string data.
1717         * src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
1718         Define.
1719         * testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
1720         test using COW strings.
1721         * testsuite/26_numerics/random/random_device/cons/default.cc: Generate
1722         a value from the device.
1723         * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
1724         Fix typo in token string.
1725
1726 2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>
1727
1728         LWG2788 basic_string spurious use of a default constructible allocator
1729         * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
1730         (basic_string::_M_replace_dispatch): Construct temporary string with
1731         the current allocator.
1732         * testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
1733         * testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.
1734
1735 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
1736
1737         * doc/xml/manual/diagnostics.xml: Update list of headers that define
1738         exception classes.
1739         * doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
1740         section about new/delete overloads. Improve section on verbose
1741         terminate handler.
1742         * doc/html/*: Regenerate.
1743
1744         * doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
1745         P0811R3. Change status of P1353R0.
1746         * doc/html/*: Regenerate.
1747
1748         * doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
1749         documentation of implementation-defined types for [thread.req.native].
1750         * doc/xml/manual/status_cxx2017.xml: Update documentation of
1751         implementation-defined strings for [variant.bad.access]. Fix typo in
1752         documentation of implementation-defined support for [fs.conform.9945].
1753         * doc/html/*: Regenerate.
1754
1755 2019-05-29  Jonathan Wakely  <jwakely@redhat.com>
1756
1757         PR libstdc++/85494
1758         * testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
1759         that fails on mingw-w64.
1760
1761         PR libstdc++/88881
1762         * src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
1763         (status(const path&, error_code&)): Use parent_path() to remove
1764         trailing slash.
1765         (symlink_status(const path&, error_code&)): Duplicate workaround for
1766         bug in _wstat for paths with trailing slash.
1767         * testsuite/27_io/filesystem/operations/remove_all.cc: Check path
1768         with trailing slash.
1769         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
1770         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
1771
1772         * src/c++17/fs_path.cc (path::parent_path()): Create whole path at
1773         once instead of building it iteratively.
1774
1775         * testsuite/util/testsuite_api.h: Remove names of unused parameters.
1776
1777         PR libstdc++/85494 use rdseed and rand_s in std::random_device
1778         * acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
1779         the assembler supports rdseed.
1780         * config.h.in: Regenerate.
1781         * configure: Regenerate.
1782         * configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
1783         * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
1784         * doc/html/*: Regenerate.
1785         * doc/xml/manual/status_cxx2011.xml: Document new tokens.
1786         * include/bits/random.h (random_device::random_device()): Always call
1787         _M_init rather than _M_init_pretr1.
1788         (random_device::random_device(const string&)): Likewise.
1789         (random_device::operator()()): Always call _M_getval().
1790         (random_device::_M_file): Replace first member of union with an
1791         anonymous struct, with _M_file as its first member.
1792         * src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
1793         [_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
1794         (USE_MT19937): Define if none of the above are defined.
1795         (USE_POSIX_FILE_IO): Define.
1796         (_M_strtoul): Remove.
1797         [USE_RDSEED] (__x86_rdseed): Define new function.
1798         [_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
1799         (random_device::_M_init(const string&)): Initialize new union members.
1800         Add support for "rdseed" and "rand_s" tokens. Decide what the
1801         "default" token does according to which USE_* macros are defined.
1802         [USE_POSIX_FILE_IO]: Store a file descriptor.
1803         [USE_MT19937]: Forward to _M_init_pretr1 instead.
1804         (random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
1805         code from _M_strtoul.
1806         [!USE_MT19937]: Call _M_init, transforming the old default token or
1807         numeric tokens to "default".
1808         (random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
1809         (random_device::_M_getval()): Use new union members to obtain a
1810         random number from the stored function pointer or file descriptor.
1811         [USE_MT19937]: Obtain a value from the mt19937 engine.
1812         (random_device::_M_getval_pretr1()): Call _M_getval().
1813         (random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
1814         instead of fileno.
1815         [!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
1816         * testsuite/26_numerics/random/random_device/85494.cc: New test.
1817
1818 2019-05-28  Jonathan Wakely  <jwakely@redhat.com>
1819
1820         PR libstdc++/90634
1821         * include/experimental/bits/fs_path.h (path::path(path&&)): Only call
1822         _M_split_cmpts() for a path with multiple components.
1823         (path::_S_is_dir_sep()): Add missing 'static' keyword to function.
1824         * src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
1825         components and reserve space in vector. Return early when there is
1826         only one component.
1827         * testsuite/27_io/filesystem/path/construct/90634.cc: New test.
1828         * testsuite/experimental/filesystem/path/construct/90634.cc: New test.
1829
1830         * testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
1831         form of std::equals for C++11 compatibility.
1832
1833 2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>
1834
1835         * doc/xml/manual/appendix_contributing.xml: Update pointer to
1836         C++ standard at ansi.org.
1837
1838 2019-05-24  Jonathan Wakely  <jwakely@redhat.com>
1839
1840         * include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
1841         * testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
1842         to "run".
1843
1844         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
1845         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.
1846
1847 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
1848
1849         * testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
1850         tests to ...
1851         * testsuite/20_util/function_objects/invoke/3.cc: New test.
1852         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
1853         "compile" test to "run".
1854
1855         * doc/xml/manual/intro.xml: Document LWG DR 2996 change.
1856         * doc/html/*: Regenerate.
1857         * include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
1858         rvalue aliasing constructor.
1859         (static_pointer_cast, const_pointer, dynamic_pointer_cast)
1860         (reinterpret_pointer_cast): Add overloads taking rvalues.
1861         * include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
1862         Add rvalue aliasing constructor.
1863         * testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
1864         "run" and check return values as well as types.
1865         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
1866         * testsuite/20_util/shared_ptr/casts/rval.cc: New test.
1867         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
1868         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
1869         values.
1870
1871         * doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
1872         * doc/xml/manual/intro.xml: Likewise.
1873         * include/std/future (__create_task_state): Add default arguments
1874         to make providing an allocator optional.
1875         (packaged_task::packaged_task(F&&)): Call __create_task_state directly
1876         instead of delegating to another constructor.
1877         (packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
1878         define allocator-extended constructors for C++17 and later.
1879         * testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
1880         C++11 and C++14.
1881         * testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
1882         * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
1883         * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
1884
1885 2019-05-23  Hans-Peter Nilsson  <hp@axis.com>
1886
1887         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
1888         Don't run the libstdc++/83237 part on simulator targets.
1889
1890 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
1891
1892         * doc/xml/manual/status_cxx2017.xml: Add feature test macro for
1893         P0040R3.
1894         * doc/html/*: Regenerate.
1895
1896         * include/experimental/any (__any_caster): Use RTTI if comparing
1897         addresses fails, to support non-unique addresses in shared libraries.
1898         * include/std/any (__any_caster): Likewise.
1899
1900         PR libstdc++/90220
1901         * include/experimental/any (__any_caster): Constrain to only be
1902         callable for object types. Use remove_cv_t instead of decay_t.
1903         If the type decays or isn't copy constructible, compare the manager
1904         function to a dummy specialization.
1905         (__any_caster): Add overload constrained for non-object types.
1906         (any::_Manager_internal<_Op>): Add dummy specialization.
1907         * testsuite/experimental/any/misc/any_cast.cc: Test function types
1908         and array types.
1909
1910 2019-05-22  Jonathan Wakely  <jwakely@redhat.com>
1911
1912         PR libstdc++/90557
1913         * src/c++17/fs_path.cc (path::_List::operator=(const _List&)): Fix
1914         reversed arguments to uninitialized_copy_n.
1915         * testsuite/27_io/filesystem/path/assign/copy.cc: Check that source
1916         is unchanged by copy assignment.
1917         * testsuite/util/testsuite_fs.h (compare_paths): Use std::equal to
1918         compare path components.
1919
1920         PR libstdc++/77691
1921         * include/experimental/memory_resource: Add system header pragma and
1922         do not define anything unless compiled as C++14 or later.
1923         (__resource_adaptor_common::__guaranteed_alignment): Remove.
1924         (__resource_adaptor_imp::do_allocate): If the requested alignment
1925         is a fundamental alignment then either allocate directly from _M_alloc
1926         or call the new _M_allocate function.
1927         (__resource_adaptor_imp::do_deallocate): Likewise for deallocation.
1928         (__resource_adaptor_imp::_M_allocate): New function that uses a copy
1929         of the allocator rebound to a POD type with the specified alignment.
1930         (__resource_adaptor_imp::_M_deallocate): Likewise for deallocation.
1931         * testsuite/experimental/memory_resource/new_delete_resource.cc:
1932         Adjust expected allocation sizes.
1933         * testsuite/experimental/memory_resource/resource_adaptor.cc: Remove
1934         xfail for Solaris x86.
1935
1936 2019-05-21  Thomas Rodgers  <trodgers@redhat.com>
1937
1938         LWG 3062 - Unnecessary decay_t in is_execution_policy_v
1939         * include/pstl/execution_defs.h (__enable_if_execution_policy):
1940         Use std::__remove_cvref_t when building with GCC.
1941
1942 2019-05-21  Jonathan Wakely  <jwakely@redhat.com>
1943
1944         PR libstdc++/90252
1945         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
1946         Use "additional_flags" to pass -ltbb to v3_target_compile command.
1947         Use check_v3_target_prop_cached to cache the result of the test.
1948
1949         * doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
1950
1951 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
1952
1953         PR libstdc++/90252
1954         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
1955         Changed v3_target_compile check from preprocess to executable.
1956         Added "-ltbb" to v3_target_compile flags.
1957
1958 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
1959
1960         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
1961         Add check for Thread Building Blocks 2018 or later.
1962
1963 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
1964
1965         * testsuite/experimental/names.cc: Only include Networking TS headers
1966         on targets with the necessary Gthreads support.
1967
1968 2019-05-20  Marek Polacek  <polacek@redhat.com>
1969
1970         CWG 2094 - volatile scalars are trivially copyable.
1971         PR c++/85679
1972         * testsuite/20_util/is_trivially_copyable/value.cc: Change the expected
1973         result for volatile int.
1974
1975 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
1976
1977         * testsuite/17_intro/names.cc: Do not check 'ptr' on Solaris.
1978         * testsuite/experimental/names.cc: Include <experimental/filesystem>
1979         conditionally.
1980
1981         PR c++/90532 Ensure __is_constructible(T[]) is false
1982         * include/std/type_traits (__do_is_default_constructible_impl)
1983         (__is_default_constructible_atom, __is_default_constructible_safe):
1984         Remove.
1985         (is_default_constructible): Use is_constructible.
1986         * testsuite/20_util/is_constructible/value.cc: Check int[] case.
1987         * testsuite/20_util/is_default_constructible/value.cc: Likewise.
1988         * testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
1989         * testsuite/20_util/is_trivially_default_constructible/value.cc:
1990         Likewise.
1991
1992 2019-05-20  Pádraig Brady  <pbrady@fb.com>
1993
1994         * libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
1995         to the deallocator with -fsized-deallocation.
1996
1997 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
1998
1999         * testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
2000         test by passing correct alignment to deallocate function.
2001
2002 2019-05-18  Jonathan Wakely  <jwakely@redhat.com>
2003
2004         PR libstdc++/90520
2005         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2006         Raise exception if unique_ptr tuple member has unknown structure.
2007         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__call__):
2008         Adjust worker to support new __uniq_ptr_data base class. Do not
2009         assume field called _M_head_impl is the first tuple element.
2010
2011 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2012
2013         * include/bits/stl_deque.h
2014         (_Deque_iterator<>::__ptr_to): Remove, use std::__ptr_rebind.
2015         (_Deque_base(_Deque_base&&, const allocator_type&)): New.
2016         (_Deque_base::_Deque_impl_data): New.
2017         (_Deque_base::_Deque_impl): Inherit latter.
2018         (_Deque_base::_Deque_impl::_M_swap_data): Move...
2019         (_Deque_base::_Deque_impl_data::_M_swap_data): ... here.
2020         (_Deque_base::_Deque_impl()): Add noexcept qualification.
2021         (_Deque_base::_Deque_impl(_Deque_impl&&, _Tp_alloc_type&&)): New.
2022         (_Deque_base::_Deque_impl::_M_get_Tp_allocator()): Remove static_cast.
2023         (deque<>::deque()): Default.
2024         (deque<>::deque(deque&&)): Default.
2025         (deque<>::deque(deque&&, const allocator_type&, false_type)): New.
2026         (deque<>::deque(deque&&, const allocator_type&, true_type)): New.
2027         (deque<>::deque(deque&&, const allocator_type&)): Delegate to latters.
2028         (deque<>::deque<_It>(_It, _It, const allocator_type&)): Use
2029         _M_range_initialize.
2030         (deque<>::assign<_It>(_It, _It)): Use _M_assign_aux.
2031         (deque<>::resize(size_type, const value_type&)): Share a single
2032         implementation.
2033         (deque<>::insert<_It>(const_iterator, _It, _It)): Use
2034         _M_range_insert_aux.
2035         [__cplusplus >= 201103L](_M_initialize_dispatch): Remove.
2036         [__cplusplus >= 201103L](_M_assign_dispatch): Remove.
2037         [__cplusplus >= 201103L](_M_insert_dispatch): Remove.
2038         * testsuite/23_containers/deque/allocator/default_init.cc: New.
2039
2040 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
2041
2042         PR libstdc++/90246
2043         * include/std/variant (holds_alternative, get, get_if): Improve
2044         static assertion messages.
2045         (bad_variant_access::bad_variant_access()): Change default message.
2046         (__throw_bad_variant_access(bool)): New overload.
2047         (get): Use new overload.
2048         (visit, visit<R>): Improve exception message.
2049
2050         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
2051         targets. Add more cases from P0608R3.
2052         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
2053
2054         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
2055         * include/experimental/type_traits (is_detected_exact)
2056         (is_detected_exact_v): Likewise.
2057         * include/pstl/execution_defs.h (is_execution_policy)
2058         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
2059         * include/pstl/execution_impl.h (__policy_traits): Likewise.
2060         * testsuite/17_intro/names.cc: Check for more non-reserved names.
2061         * testsuite/experimental/names.cc: New test.
2062
2063         PR libstdc++/85965
2064         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
2065         assertions from the destructor.
2066         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
2067         Move static_assert for hash function to here.
2068         (_Hash_table_base::_M_equals): Move static_assert for equality
2069         predicate to here.
2070         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
2071         Remove.
2072         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
2073         the value directly instead of calling _S_value.
2074         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
2075         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
2076         _S_key(_Const_Link_type).
2077         * testsuite/23_containers/set/85965.cc: Check construction,
2078         destruction, assignment and size() do not trigger the assertions.
2079         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
2080         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
2081         expected errors.
2082         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
2083         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
2084         * testsuite/23_containers/set/48101_neg.cc: Likewise.
2085         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
2086         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
2087         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
2088         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
2089
2090         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
2091         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
2092         in C++11.
2093
2094         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
2095         P1165R1 entries.
2096         * doc/html/*: Regenerate.
2097         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
2098         of decay_t (P0777R1).
2099
2100 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2101
2102         Move from state of allocators (LWG2593)
2103         * include/bits/stl_deque.h
2104         (_Deque_base(_Deque_base&&, false_type)): Remove.
2105         (_Deque_base(_Deque_base&&, true_type)): Remove.
2106         (_Deque_base(_Deque_base&&)): Adapt.
2107         (_Deque_base::_M_move_impl()): Remove.
2108         * testsuite/util/testsuite_allocator.h
2109         (propagating_allocator(propagating_allocator&&)): Preserve move from
2110         state.
2111         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
2112         Adapt.
2113         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
2114         Adapt.
2115         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
2116         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
2117         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
2118         Adapt.
2119         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
2120         Adapt.
2121         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
2122         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
2123         (test02): Adapt.
2124         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
2125         (test02): Adapt.
2126         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
2127         (test02): Adapt.
2128         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
2129         (test02): Adapt.
2130         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
2131         Adapt.
2132         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
2133         Adapt.
2134         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
2135         (test02): Adapt.
2136         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
2137         (test02): Adapt.
2138
2139 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
2140
2141         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
2142         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
2143
2144         * include/std/variant (__overload_set): Remove.
2145         (_Arr): New helper.
2146         (_Build_FUN): New class template to define a single FUN overload,
2147         with specializations to prevent unwanted conversions, as per P0608R3.
2148         (_Build_FUNs): New class template to build an overload set of FUN.
2149         (_FUN_type): New alias template to perform overload resolution.
2150         (__accepted_type): Use integer_constant base for failure case. Use
2151         _FUN_type for successful case.
2152         (variant::__accepted_index): Use _Tp instead of _Tp&&.
2153         (variant::variant(_Tp&&)): Likewise.
2154         (variant::operator=(_Tp&&)): Likewise.
2155
2156         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
2157         Replace raw visitation with a runtime check for the valueless state
2158         and a non-raw visitor.
2159         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
2160         (variant::index()): Remove branch.
2161         (variant::swap(variant&)): Use valueless_by_exception() instead of
2162         comparing the index to variant_npos, and add likelihood attribute.
2163
2164         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
2165         (_Hashtable_base::_Equal_hash_code): Define new class template.
2166         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
2167         _Equal_helper.
2168
2169         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
2170         Replace with _M_get non-static member function.
2171         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
2172         member function.
2173         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
2174         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
2175
2176         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
2177         _S_get accessors for members in EBO helpers.
2178         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
2179         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
2180         overloads.
2181         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
2182         helpers.
2183         (_Hashtable_base::_M_eq()): Remove non-const overload.
2184
2185 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
2186
2187         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
2188
2189 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2190
2191         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
2192         Fix return value.
2193
2194 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2195
2196         * config/os/solaris/solaris2.10: Move to ...
2197         * config/os/solaris: ... this.
2198         * configure.host (os_include_dir): Adapt.
2199         (abi_baseline_pair): Remove Solaris 10 handling.
2200         * config/abi/post/i386-solaris2.10: Remove.
2201         * config/abi/post/sparc-solaris2.10: Remove.
2202         * config/abi/post/i386-solaris2.11: Rename to ...
2203         * config/abi/post/i386-solaris: ... this.
2204         * config/abi/post/sparc-solaris2.11: Rename to ...
2205         * config/abi/post/sparc-solaris: ... this.
2206
2207         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
2208         workaround.
2209
2210         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
2211         xfail.
2212
2213 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2214
2215         * include/std/variant (__visit_with_index): Remove typedef.
2216         (__deduce_visit_result): New tag type.
2217         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
2218         visitation of possibly-valueless variants, forwarding to __do_visit
2219         with the relevant tag type.
2220         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
2221         and make lambda return void.
2222         (__variant_construct): Likewise.
2223         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
2224         __raw_idx_visit and make lambda return void.
2225         (_Multi_array::__untag_result): Add metafunction to check the function
2226         pointer type for a tag type that dictates the kind of visitation.
2227         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
2228         Use decltype(auto) instead of tagged function pointer type.
2229         (__gen_vtable_impl): Remove bool non-type parameter and unused
2230         _Variant_tuple parameter.
2231         (__gen_vtable_impl::__visit_invoke_impl): Remove.
2232         (__gen_vtable_impl::__do_visit_invoke): Remove.
2233         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
2234         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
2235         for the visit<R> case, rather than dispatching to separate functions.
2236         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
2237         lambda return void.
2238         (variant::swap): Likewise.
2239         (__do_visit): Replace two non-type template parameters with a single
2240         type parameter, so that the caller must specify the visitor's return
2241         type (or one of the tag types).
2242         (visit): Deduce a return type from the visitor and use the
2243         __deduce_visit_result tag to enforce that all overloads return the
2244         same type.
2245         (visit<R>): Call __do_visit<R> with explicit result type.
2246         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
2247         lambda return void.
2248
2249 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2250
2251         nonesuch is insufficiently useless (lwg2996)
2252         * include/std/type_traits (struct __nonesuch): Added private base
2253         class to make __nonesuch not an aggregate and removed deleted default
2254         constructor.
2255         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
2256         (operator=(const pair&)): Use __nonesuch instead of
2257         __nonesuch_no_braces.
2258         (operator=(pair&&)): Likewise
2259         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
2260         of __nonesuch_no_braces.
2261         (operator=(tuple&&)): Likewise
2262         * include/experimental/type_traits (struct nonesuch): Added private
2263         base class to make nonesuch not an aggregate and removed deleted
2264         default constructor.
2265         * testsuite/20_util/nonesuch/nonesuch.cc: New.
2266         * testsuite/experimental/type_traits/nonesuch.cc: New.
2267
2268 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2269
2270         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
2271         (_Function_handler): Remove partial specializations for void return
2272         types and pointers to member.
2273         (_Function_handler::_M_manager): Adapt to removal of
2274         _Simple_type_wrapper.
2275         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
2276         * include/std/functional (_Bind_result::__enable_if_void)
2277         (_Bind_result::__disable_if_void): Remove sfinae helpers.
2278         (_Bind_result::__call): Use __invoke_r and remove overloads for void
2279         return types.
2280         * include/std/future (__future_base::_Task_state::_M_run)
2281         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
2282         change return type of lambda expressions.
2283
2284         * include/bits/invoke.h (__invoke_r): Define new function implementing
2285         the INVOKE<R> pseudo-function.
2286         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
2287         * testsuite/20_util/function_objects/invoke/2.cc: New test.
2288
2289         * include/std/type_traits (__is_nt_convertible_helper): Define it
2290         unconditionally, not only for C++20.
2291         (__is_nothrow_convertible): Define internal trait for use in C++11.
2292         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
2293         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
2294         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
2295         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
2296         that has nothrow explicit conversion but potentially-throwing implicit
2297         conversion.
2298         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
2299         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
2300         function to only consider implicit conversions.
2301         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
2302
2303         * include/std/iterator: Include <iosfwd> instead of <istream> and
2304         <ostream>.
2305
2306         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
2307         Remove unused, non-standard function.
2308
2309         * include/bits/regex.h (match_results::max_size()): Adjust return
2310         value to account for prefix/suffix/unmatched subs.
2311         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
2312         reset the contained sub matches.
2313         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
2314         function to set result state following a failed match.
2315         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
2316         sub_match states after _M_resize. Use _M_establish_failed_match.
2317
2318         PR libstdc++/69724
2319         * include/std/thread (thread::_State_impl, thread::_S_make_state):
2320         Replace single _Callable parameter with variadic _Args pack, to
2321         forward them directly to the tuple of decayed copies.
2322         * testsuite/30_threads/thread/cons/69724.cc: New test.
2323
2324 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2325
2326         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
2327         * include/bits/basic_string.h: (operator=(const basic_string&):
2328         Move allocator decision to assign.
2329         (assign(const basic_string&)): Move allocator decision here.
2330         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
2331         Add tests.
2332         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
2333         Add tests.
2334
2335 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2336
2337         * testsuite/util/testsuite_allocator.h (memory_resource)
2338         (default_resource_mgr): Fix indentation.
2339
2340         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
2341         Use operator-> to access raw pointer member.
2342         * testsuite/23_containers/vector/59829.cc: Likewise.
2343         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
2344         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
2345         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
2346         for tests.
2347         (PointerBase, PointerBase_void): Derive from NullablePointer and use
2348         its constructors and equality operators. Change converting
2349         constructors to use operator-> to access private member of the other
2350         pointer type.
2351         (PointerBase_void::operator->()): Add, for access to private member.
2352         (operator-(PointerBase, PointerBase)): Change to hidden friend.
2353         (operator==(PointerBase, PointerBase)): Remove.
2354         (operator!=(PointerBase, PointerBase)): Remove.
2355
2356         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
2357         not assume field called _M_head_impl is the first tuple element.
2358         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
2359         implementation more accurate.
2360         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
2361         empty pointer type and non-empty deleter.
2362
2363         LWG 2899 - Make is_move_constructible correct for unique_ptr
2364         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
2365         move assignment operator.
2366         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
2367         (__uniq_ptr_data): New class template with conditionally deleted
2368         special members.
2369         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
2370         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
2371         constructor and move assignment operator as defaulted.
2372         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
2373         __uniq_ptr_impl::release().
2374         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
2375         to __uniq_ptr_impl::reset(pointer).
2376         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2377         Check for new __uniq_ptr_data type.
2378         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
2379
2380 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2381
2382         PR libstdc++/90454.cc path construction from void*
2383         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
2384         pointers to void are rejected as well as void.
2385         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
2386         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
2387         pointers to void.
2388         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
2389
2390         * doc/xml/manual/policy_data_structures.xml: Comment out stray
2391         <remark> elements. Fix formatting of bibliography references.
2392
2393 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
2394
2395         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
2396
2397 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2398
2399         Remove Profile Mode, deprecated since 7.1.0
2400         * doc/Makefile.am: Remove XML file for profile mode docs.
2401         * doc/Makefile.in: Regenerate.
2402         * doc/xml/authors.xml: Remove authors of profile mode docs.
2403         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
2404         mode.
2405         * doc/xml/manual/debug.xml: Likewise.
2406         * doc/xml/manual/evolution.xml: Document removal of profile mode.
2407         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
2408         * doc/xml/manual/spine.xml: Remove profile mode author credit.
2409         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
2410         directive.
2411         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
2412         macro.
2413         * doc/html/*: Regenerate.
2414         * include/Makefile.am: Remove profile mode headers.
2415         * include/Makefile.in: Regenerate.
2416         * include/bits/c++config (std::__profile): Remove namespace.
2417         [_GLIBCXX_PROFILE]: Remove checks for macro.
2418         * include/profile/array: Remove.
2419         * include/profile/base.h: Remove.
2420         * include/profile/bitset: Remove.
2421         * include/profile/deque: Remove.
2422         * include/profile/forward_list: Remove.
2423         * include/profile/impl/profiler.h: Remove.
2424         * include/profile/impl/profiler_algos.h: Remove.
2425         * include/profile/impl/profiler_container_size.h: Remove.
2426         * include/profile/impl/profiler_hash_func.h: Remove.
2427         * include/profile/impl/profiler_hashtable_size.h: Remove.
2428         * include/profile/impl/profiler_list_to_slist.h: Remove.
2429         * include/profile/impl/profiler_list_to_vector.h: Remove.
2430         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
2431         * include/profile/impl/profiler_node.h: Remove.
2432         * include/profile/impl/profiler_state.h: Remove.
2433         * include/profile/impl/profiler_trace.h: Remove.
2434         * include/profile/impl/profiler_vector_size.h: Remove.
2435         * include/profile/impl/profiler_vector_to_list.h: Remove.
2436         * include/profile/iterator_tracker.h: Remove.
2437         * include/profile/list: Remove.
2438         * include/profile/map: Remove.
2439         * include/profile/map.h: Remove.
2440         * include/profile/multimap.h: Remove.
2441         * include/profile/multiset.h: Remove.
2442         * include/profile/ordered_base.h: Remove.
2443         * include/profile/set: Remove.
2444         * include/profile/set.h: Remove.
2445         * include/profile/unordered_base.h: Remove.
2446         * include/profile/unordered_map: Remove.
2447         * include/profile/unordered_set: Remove.
2448         * include/profile/vector: Remove.
2449         * scripts/run_doxygen: Do not process profile mode headers.
2450         * testsuite/23_containers/array/element_access/60497.cc: Don't use
2451         profile mode type.
2452         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
2453         Remove dg-skip-if for profile mode.
2454         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
2455         preprocessor check for profile mode.
2456         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
2457         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
2458         for profile mode.
2459         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
2460         Likewise.
2461         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
2462         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
2463         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
2464         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
2465         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
2466         Likewise.
2467         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
2468         Likewise.
2469         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
2470         Likewise.
2471         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
2472         Likewise.
2473         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
2474         preprocessor check for profile mode.
2475         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
2476         Likewise.
2477         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
2478         Remove dg-skip-if for profile mode.
2479         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
2480         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
2481         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
2482         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
2483         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
2484         * testsuite/Makefile.am: Remove profile_flags variable and
2485         * testsuite/Makefile.am: Remove profile_flags variable and
2486         check-profile target.
2487         * testsuite/Makefile.in: Regenerate.
2488         * testsuite/ext/profile/all.cc: Remove.
2489         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
2490         * testsuite/ext/profile/profiler_algos.cc: Remove.
2491         * testsuite/ext/profile/replace_new.cc: Remove.
2492         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
2493         preprocessor check for profile mode.
2494         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
2495         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
2496         (check_v3_target_normal_mode): Do not check for profile mode macro.
2497         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
2498         profile mode.
2499         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
2500         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
2501         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
2502         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
2503         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
2504         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
2505         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
2506         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2507         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
2508         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
2509
2510         Remove array_allocator extension, deprecated since 4.9.0
2511         * doc/xml/manual/allocator.xml: Remove documentation for
2512         array_allocator.
2513         * doc/xml/manual/evolution.xml: Document array_allocator removal.
2514         * doc/xml/manual/using.xml: Remove header from documentation.
2515         * include/Makefile.am: Remove <ext/array_allocator.h> header.
2516         * include/Makefile.in: Regenerate.
2517         * include/ext/array_allocator.h: Remove.
2518         * include/precompiled/extc++.h: Do not include removed header.
2519         * testsuite/ext/array_allocator/1.cc: Remove.
2520         * testsuite/ext/array_allocator/2.cc: Remove.
2521         * testsuite/ext/array_allocator/26875.cc: Remove.
2522         * testsuite/ext/array_allocator/3.cc: Remove.
2523         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
2524         * testsuite/ext/array_allocator/check_delete.cc: Remove.
2525         * testsuite/ext/array_allocator/check_new.cc: Remove.
2526         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
2527         * testsuite/ext/headers.cc: Do not include removed header.
2528
2529 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
2530
2531         * include/bits/stl_bvector.h
2532         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2533         Make hidden friend.
2534         (operator<(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2535         Likewise.
2536         (operator!=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2537         Likewise.
2538         (operator>(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2539         Likewise.
2540         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2541         Likewise.
2542         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2543         Likewise.
2544         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
2545         Likewise.
2546         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
2547         copy elision.
2548         (_Bit_iterator::operator-(difference_type)): Likewise.
2549         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
2550         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
2551         NRVO copy elision.
2552         (_Bit_const_iterator::operator-(difference_type)): Likewise.
2553         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
2554
2555 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
2556
2557         PR libstdc++/81266
2558         * testsuite/util/thread/all.h: Do not use remove_pointer for
2559         std::thread::native_handle_type.
2560
2561         PR libstdc++/90397
2562         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
2563         (_Variant_storage<true, Types...>::_M_reset()))
2564         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
2565         (__get_storage): Likewise.
2566         (variant): Add noexcept to friend declarations for __get and
2567         __get_storage.
2568
2569         PR libstdc++/90388
2570         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
2571         Use _Require for constraints.
2572         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
2573         per the standard.
2574         (__uniq_ptr_hash): New base class with conditionally-disabled call
2575         operator.
2576         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
2577         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
2578         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
2579
2580         * include/bits/shared_ptr.h: Improve docs.
2581         * include/bits/shared_ptr_base.h: Likewise.
2582         * include/bits/stl_uninitialized.h: Likewise.
2583         * include/bits/unique_ptr.h: Likewise.
2584         * libsupc++/new: Likewise.
2585
2586 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
2587
2588         * include/bits/stl_deque.h
2589         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2590         Make hidden friend.
2591         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2592         Likewise.
2593         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2594         Likewise.
2595         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2596         Likewise.
2597         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2598         Likewise.
2599         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
2600         Likewise.
2601         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
2602         copy elision.
2603         (_Deque_iterator<>::operator-(difference_type)): Likewise.
2604
2605 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
2606
2607         PR libstdc++/90277
2608         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
2609         (test01): Reserve for number of insertions to avoid rehash during test.
2610         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
2611         (test01): Likewise.
2612         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
2613         (test01): Likewise.
2614         (test02): Likewise.
2615         (test03): Likewise.
2616
2617 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
2618
2619         * include/experimental/bits/fs_path.h: Improve docs.
2620         * include/experimental/bits/net.h: Fix wrong header name in comment.
2621         Do not document implementation details.
2622         * include/experimental/netfwd: Fix doxygen grouping.
2623
2624 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
2625
2626         * include/bits/stl_pair.h: Improve docs.
2627         * include/std/tuple: Likewise.
2628
2629         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
2630         inline namespace.
2631         * include/std/chrono: Improve docs.
2632         * include/std/ratio: Do not document implementation details.
2633         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
2634         line numbers.
2635         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
2636
2637         PR libstdc++/89102
2638         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
2639         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
2640         (__duration_common_type): New helper.
2641         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
2642         __duration_common_type.
2643         (__timepoint_common_type_wrapper): Replace with ...
2644         (__timepoint_common_type): New helper.
2645         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
2646         Use __time_point_common_type.
2647         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
2648         (__common_type_impl): If either argument is transformed by decay,
2649         use the common_type of the decayed types.
2650         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
2651         decayed, use __do_common_type_impl to get the common_type.
2652         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
2653         (__do_member_type_wrapper, __member_type_wrapper)
2654         (__expanded_common_type_wrapper): Remove.
2655         (__common_type_pack, __common_type_fold): New helpers.
2656         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
2657         __member_type_wrapper and __expanded_common_type_wrapper.
2658         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
2659         Test zero-length template argument list.
2660         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
2661         Test single argument cases and argument types that should decay.
2662         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
2663         Adjust expected error.
2664         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
2665         dg-error lineno.
2666         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
2667         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
2668         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
2669
2670         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
2671
2672 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2673
2674         Make allocator propagation more consistent for
2675         operator+(basic_string) (P1165R1)
2676         * include/bits/basic_string.h
2677         (operator+(basic_string&&, basic_string&&): Changed resulting
2678         allocator to always be the one from the first parameter.
2679         * include/bits/basic_string.tcc
2680         (operator+(const _CharT*, const basic_string&)): Changed
2681         resulting allocator to be SOCCC on the second parameter's allocator.
2682         (operator+(_CharT, const basic_string&)): Likewise.
2683         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
2684         New.
2685         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
2686         New.
2687
2688 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
2689
2690         * include/bits/regex.h: Improve docs.
2691         * include/bits/regex.tcc: Do not document implementation details.
2692
2693         * testsuite/19_diagnostics/error_code/hash.cc: New test.
2694
2695 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
2696
2697         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
2698         Add type printer for container types in std::__debug namespace.
2699         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
2700         (gdb-tests): Use distinct parameters for the type of test and use of
2701         regex.
2702         (gdb-test): Check for regex test even if 'whatis' test.
2703         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
2704         mode.
2705         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
2706         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
2707         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
2708         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
2709         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2710         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
2711         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
2712
2713 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
2714
2715         * include/std/system_error (error_category): Fix comment.
2716
2717         PR libstdc++/90299
2718         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
2719         argument is an empty path.
2720         (absolute(const path&, error_code&)): Use invalid_argument as error
2721         code instead of no_such_file_or_directory.
2722         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
2723         of non-existent paths and empty paths with both overloads of absolute.
2724
2725         * include/std/system_error (error_category, error_code)
2726         (error_condition): Improve docs.
2727         * libsupc++/exception: Add missing @addtogroup Doxygen command.
2728         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
2729         to class documentation. Suppress documentation for implementation
2730         details.
2731         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
2732         Suppress documentation for implementation details.
2733
2734         * include/std/system_error (error_code): Remove friend declaration
2735         for hash<error_code>.
2736         (hash<error_code>::operator()): Use public member functions to access
2737         value and category.
2738         (hash<error_condition>::operator()): Use address of category, not
2739         its object representation.
2740         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
2741         Use public member functions to access value and category.
2742         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
2743
2744 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
2745
2746         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
2747         * include/bits/hashtable_policy.h
2748         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
2749         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
2750         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
2751         smaller than input value rather than always greater. Preserve
2752         _M_next_resize if called with 0 input. Use __builtin_floorl.
2753         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
2754         elements + number of insertions is greater than _M_next_resize. Start
2755         with 11 buckets if not told otherwise. Use __builtin_floorl.
2756         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
2757         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
2758         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
2759         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
2760         told otherwise. Use __builtin_floorl.
2761         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
2762         to also validate _Power2_rehash_policy.
2763         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
2764         Adapt.
2765
2766 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
2767
2768         PR libstdc++/61761
2769         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
2770         std::copysign.
2771
2772         PR libstdc++/52119
2773         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
2774         overflow warning with -Wpedantic -Wsystem-headers.
2775
2776 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
2777
2778         PR libstdc++/90314
2779         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
2780         * include/bits/move.h (swap): Remove extra parentheses.
2781
2782         * include/experimental/bits/lfts_config.h: Improve doc markup.
2783         * include/experimental/optional: Improve docs.
2784         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
2785         (__constexpr_addressof): Remove.
2786         (optional::operator->()): Use std::__addressof().
2787         * include/std/optional (optional::operator->()): Adjust whitespace.
2788         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
2789         that operator-> is still constexpr with overloaded operator&. Change
2790         to compile-only test.
2791         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
2792         compile-only test.
2793
2794         * include/bits/shared_ptr.h: Improve docs.
2795         * include/bits/shared_ptr_atomic.h: Likewise.
2796         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
2797
2798         * include/bits/basic_string.h: Fix iterator/index confusion in
2799         Doxygen comments.
2800         * include/bits/range_access.h: Fix Doxygen warnings.
2801         * include/bits/refwrap.h: Do not document implementation details.
2802         (ref, cref): Group docs with reference_wrapper.
2803         * include/std/fstream: Fix Doxygen markup.
2804         * libsupc++/initializer_list (begin, end): Group docs with
2805         initializer_list.
2806
2807         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
2808
2809         * include/bits/unique_lock.h: Fix/improve doxygen markup.
2810         * include/std/mutex: Likewise.
2811         * include/std/shared_mutex: Likewise.
2812
2813         * include/bits/fs_dir.h: Fix/improve doxygen markup.
2814         * include/bits/fs_fwd.h: Likewise.
2815         * include/bits/fs_ops.h: Likewise.
2816         * include/bits/fs_path.h: Likewise.
2817         * include/std/filesystem: Likewise.
2818
2819         * include/experimental/bits/net.h: Fix/improve doxygen markup.
2820         * include/experimental/buffer: Likewise.
2821         * include/experimental/executor: Likewise.
2822         * include/experimental/internet: Likewise.
2823         * include/experimental/io_context: Likewise.
2824         * include/experimental/net: Likewise.
2825         * include/experimental/netfwd: Likewise.
2826         * include/experimental/socket: Likewise.
2827         * include/experimental/timer: Likewise.
2828
2829         * doc/doxygen/doxygroups.cc: Move description of experimental group
2830         here.
2831         * include/experimental/algorithm: Add to libfund-ts doc group.
2832         * include/experimental/any: Likewise. Do not document implementation
2833         details.
2834         * include/experimental/array: Add to libfund-ts doc group.
2835         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
2836         for Library Fundamentals.
2837         * include/experimental/chrono: Add to libfund-ts doc group.
2838         * include/experimental/deque: Likewise.
2839         * include/experimental/forward_list: Likewise.
2840         * include/experimental/functional: Likewise.
2841         * include/experimental/iterator: Likewise.
2842         * include/experimental/list: Likewise.
2843         * include/experimental/map: Likewise.
2844         * include/experimental/memory: Likewise.
2845         * include/experimental/memory_resource: Likewise. Improve docs.
2846         details.
2847         * include/experimental/numeric: Add to libfund-ts doc group.
2848         * include/experimental/optional: Likewise.
2849         * include/experimental/propagate_const: Likewise.
2850         * include/experimental/random: Likewise.
2851         * include/experimental/ratio: Likewise.
2852         * include/experimental/regex: Likewise.
2853         * include/experimental/set: Likewise.
2854         * include/experimental/source_location: Likewise.
2855         * include/experimental/string: Likewise.
2856         * include/experimental/string_view: Likewise.
2857         * include/experimental/system_error: Likewise.
2858         * include/experimental/tuple: Likewise.
2859         * include/experimental/type_traits: Likewise.
2860         * include/experimental/unordered_map: Likewise.
2861         * include/experimental/unordered_set: Likewise.
2862         * include/experimental/utility: Likewise.
2863         * include/experimental/vector: Likewise.
2864         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
2865         * testsuite/experimental/array/neg.cc: Adjust dg-error.
2866         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
2867         Likewise.
2868         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
2869         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
2870         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
2871         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
2872         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
2873
2874         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
2875         * include/experimental/bits/fs_fwd.h: Improve docs.
2876         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
2877         * include/experimental/bits/fs_path.h: Likewise.
2878         (path, filesystem_error, u8path): Improve docs.
2879         * include/experimental/filesystem: Link to docs for TS.
2880
2881         * config/allocator/new_allocator_base.h (__allocator_base): Add
2882         workaround for Doxygen bug #6945.
2883         * include/std/memory: Improve docs. Define group for pointer safety.
2884         * include/std/scoped_allocator: Improve docs. Use "undocumented"
2885         conditional to suppress documentation for implementation details.
2886
2887         * include/bits/specfun.h: Improve docs.
2888         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
2889         and namespaces.
2890
2891         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
2892         (std::experimental): Add docs.
2893         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
2894         namespace to nothing when generating docs.
2895         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
2896         * include/std/chrono (std::chrono): Likewise.
2897         * include/std/functional (std::placeholders): Likewise.
2898         * include/std/thread (std::this_thread): Likewise.
2899
2900         * include/parallel/settings.h: Fix Doxygen markup.
2901
2902         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
2903         anything unless PB_DS_CLASS_C_DEC is defined.
2904         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
2905         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
2906         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
2907         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
2908         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
2909         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
2910         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
2911         Likewise.
2912         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
2913         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
2914         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
2915         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
2916         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
2917         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
2918         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
2919         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
2920         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
2921         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
2922         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
2923         Likewise.
2924         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
2925         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
2926         Likewise.
2927         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
2928         Likewise.
2929
2930         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
2931         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
2932         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
2933         Doxygen expands.
2934
2935 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2936
2937         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
2938         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
2939         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
2940         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
2941         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
2942         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
2943         Likewise.
2944         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
2945         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
2946         Likewise.
2947
2948 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
2949
2950         PR libstdc++/61761
2951         * include/std/complex (__complex_proj): Return parameter unchanged.
2952         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
2953         floating-point types to take std::complex arguments.
2954         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
2955         floating-point types.
2956         * testsuite/26_numerics/complex/proj.cc: New test.
2957
2958 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
2959
2960         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
2961         to _Lock_policyE[012].
2962         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
2963
2964 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
2965
2966         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
2967         macros accidentally left in.
2968         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
2969         unnecessary -lstdc++fs option. Fix test for mingw.
2970         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
2971         Fix test for mingw.
2972
2973 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
2974
2975         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
2976
2977 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
2978
2979         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
2980
2981         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
2982         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
2983
2984         PR libstdc++/71312
2985         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
2986
2987         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
2988         attribute.
2989
2990         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
2991         class template and partial specialization.
2992
2993         PR libstdc++/87982
2994         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
2995         an integral type.
2996         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
2997         functions to convert a value to an integral type.
2998         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
2999         (fill_n): Convert _Size parameter to an integral type.
3000         * testsuite/25_algorithms/fill_n/87982.cc: New test.
3001         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
3002         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
3003         * testsuite/25_algorithms/generate_n/87982.cc: New test.
3004         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
3005         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
3006
3007 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3008
3009         Adding noexcept-specification on tuple constructors (LWG 2899)
3010         * libstdc++-v3/include/std/tuple:
3011         (tuple()): Add noexcept-specification.
3012         (tuple(const _Elements&...)): Likewise
3013         (tuple(_UElements&&...)): Likewise
3014         (tuple(const tuple<_UElements...>&)): Likewise
3015         (tuple(tuple<_UElements...>&&)): Likewise
3016         (tuple(const _T1&, const _T2&)): Likewise
3017         (tuple(_U1&&, _U2&&)): Likewise
3018         (tuple(const tuple<_U1, _U2>&): Likewise
3019         (tuple(tuple<_U1, _U2>&&): Likewise
3020         (tuple(const pair<_U1, _U2>&): Likewise
3021         (tuple(pair<_U1, _U2>&&): Likewise
3022         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
3023
3024 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
3025
3026         PR libstdc++/87106
3027         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
3028         arguments with __restrict.
3029
3030 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
3031
3032         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
3033
3034 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
3035
3036         * include/experimental/bits/fs_path.h
3037         (path::_S_convert_loc<_InputIterator>): Create const std::string to
3038         avoid redundant call to _S_convert_loc with non-const pointers.
3039
3040         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
3041         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
3042         * testsuite/21_strings/basic_string/hash/hash.cc
3043         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
3044         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
3045         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
3046
3047         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
3048         wstring::_M_replace_dispatch with more specific patterns.
3049         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
3050         Create const std::string to avoid redundant call to _S_convert_loc
3051         with non-const pointers.
3052         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
3053         avoid unnecessary basic_string::assign instantiations.
3054
3055         * include/std/memory (__uses_alloc_args): Add string-literal to
3056         static_assert, to match the one in __uses_alloc.
3057         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
3058         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
3059         for recursive uses-allocator construction of nested pairs.
3060         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
3061         comment.
3062
3063 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
3064
3065         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
3066         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
3067         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
3068         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
3069
3070         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3071         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3072         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
3073         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3074         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3075         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3076         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3077
3078 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
3079
3080         PR libstdc++/90239
3081         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
3082         * include/std/scoped_allocator [__cplusplus > 201703L]
3083         (scoped_allocator_adaptor::construct): Define in terms of
3084         uses_allocator_construction_args, as per P0591R4.
3085         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
3086         * testsuite/util/testsuite_allocator.h: Remove name of unused
3087         parameter.
3088
3089 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
3090
3091         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
3092         * doc/html/*: Regenerate.
3093
3094         * include/bits/fs_path.h (operator<, operator<=, operator>)
3095         (operator>=, operator==, operator!=): Make hidden friends, as per
3096         LWG 3065.
3097         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
3098         string type in test.
3099         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
3100
3101         * include/std/any (any::any(ValueType&&)): Use __and_v.
3102         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
3103         Likewise.
3104
3105         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
3106         as per P0777R1.
3107         * include/std/type_traits (__result_of_memfun): Use remove_reference
3108         instead of __remove_cvref_t and remove redundant is_same check.
3109         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
3110
3111         * include/experimental/string_view (basic_string_view::pointer)
3112         (basic_string_view::reference): Fix to refer to non-const value_type.
3113         * include/bits/basic_string.h (basic_string): Use __sv_check and
3114         __sv_limit instead of basic_string_view::_M_check and
3115         basic_string_view::_M_limit.
3116         * include/std/string_view (__sv_check, __sv_limit): New
3117         helper functions to replace basic_string_view::_M_check and
3118         basic_string_view::_M_limit.
3119         (basic_string_view): Add static assertions to enforce ill-formed
3120         requirement for traits_type::char_type from P1148R0, and to enforce
3121         required properties of char-like types.
3122         (basic_string_view::pointer, basic_string_view::reference): Fix to
3123         refer to non-const value_type.
3124         (basic_string_view::operator[], basic_string_view::at)
3125         (basic_string_view::front, basic_string_view::back)
3126         (basic_string_view::data): Use const_reference and const_pointer
3127         typedefs for return types.
3128         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
3129         (hash<wstring_view>): Fix argument_type typedef.
3130         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3131         char/1.cc: Fix expected return type of basic_string_view::data().
3132         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3133         wchar_t/1.cc: Likewise.
3134         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3135         char/1.cc: Likewise.
3136         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3137         wchar_t/1.cc: Likewise.
3138         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
3139         New test.
3140         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
3141         Check reference and pointer typedefs.
3142         * testsuite/experimental/string_view/requirements/typedefs.cc:
3143         Likewise.
3144         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
3145         Fix expected return type of basic_string_view::data().
3146         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
3147         1.cc: Likewise.
3148         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
3149         Likewise.
3150         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
3151         1.cc: Likewise.
3152
3153         PR libstdc++/90220
3154         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
3155         Avoid a runtime check for types that can never be stored in std::any.
3156         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3157         array types.
3158
3159         PR libstdc++/90220 (partial)
3160         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
3161         not attempt ill-formed static_cast to pointers to non-object types.
3162         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3163         function types.
3164
3165         * testsuite/20_util/variant/run.cc: Catch exception by reference to
3166         prevent -Wcatch-value warning.
3167
3168         * include/std/variant (__variant_construct): Use template parameter
3169         type instead of equivalent decltype-specifier.
3170         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
3171         Replace forward with move.
3172         (_Move_ctor_base<false, Types...>::_M_destructive_move)
3173         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
3174         (_Move_ctor_base<true, Types...>::_M_destructive_move)
3175         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
3176         index after construction succeeds.
3177         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
3178         if-constexpr checks that are always true. Use __remove_cvref_t instead
3179         of remove_reference so that is_nothrow_move_constructible check
3180         doesn't use a const rvalue parameter. In the potentially-throwing case
3181         construct a temporary and move assign it, as per LWG 2904.
3182         (_Move_assign_base<false, Types...>::operator=): Remove redundant
3183         if-constexpr checks that are always true. Use emplace as per LWG 2904.
3184         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
3185         construct a temporary and move assign from it, as per LWG 2904.
3186         * testsuite/20_util/variant/exception_safety.cc: Check that
3187         assignment operators have strong exception safety guarantee.
3188
3189 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
3190
3191         Document PSTL linker flags
3192
3193         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
3194
3195 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3196
3197         * include/std/variant (__detail::__variant::_Traits): Make
3198         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
3199         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
3200         P0602R4.
3201         (__detail::__variant::_Copy_assign_alias): Only depend on
3202         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
3203         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
3204         move assignment operators.
3205
3206         PR libstdc++/90165
3207         * include/std/variant (variant::__not_self): New helper for the
3208         is_same_v<remove_cvref_t<T>, variant>==false constraints.
3209         (variant::__to_type_impl): Remove.
3210         (variant::__to_type): Add default argument to check pack size, instead
3211         of using __to_type_impl.
3212         (variant::__accepted_type): Add default argument using __not_self.
3213         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
3214         for variant(T&&) constructor constraint.
3215         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
3216         Extract __accepted_type into a named template parameter for reuse in
3217         other constraints and in the exception specification.
3218         (variant::variant(in_place_type_t<T>, Args&&...))
3219         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
3220         (variant::variant(in_place_index_t<T>, Args&&...))
3221         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
3222         (variant::operator=T&&)): Remove redundant && from trait arguments.
3223         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
3224         isn't used for in_place_type or in_place_index arguments.
3225
3226         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
3227         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
3228         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
3229
3230 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
3231             Bernd Edlinger  <bernd.edlinger@hotmail.de>
3232             Jakub Jelinek  <jakub@redhat.com>
3233
3234         PR target/89093
3235         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
3236         general-regs-only target attribute for ARM.
3237
3238 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3239
3240         PR libstdc++/87431
3241         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
3242         specialization also depend on is_nothrow_move_constructible.
3243         * include/std/variant (__detail::__variant::__never_valueless()):
3244         Only true if the variant would have a move assignment operator.
3245         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
3246         Check __never_valueless<T...>().
3247         (variant::emplace): Only perform non-throwing move assignments
3248         for never-valueless alternatives if the variant has a move assignment
3249         operator.
3250         * testsuite/20_util/variant/compile.cc: Check that never-valueless
3251         types can be emplaced into non-assignable variants.
3252         * testsuite/20_util/variant/run.cc: Check that never-valueless types
3253         don't get copied when emplaced into non-assignable variants.
3254
3255         * include/std/variant (__detail::__variant::__ref_cast): Remove
3256         unused function.
3257         (__detail::__variant::_Uninitialized::_M_get)
3258         (__detail::__variant::__get)
3259         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
3260
3261 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
3262
3263         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
3264         to Darwin10.
3265         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
3266         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
3267         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
3268         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
3269
3270 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3271
3272         Delegate PSTL configuration to pstl/pstl_config.h
3273
3274         * include/bits/c++config: Remove explicit PSTL configuration
3275         macros and use definitions from <pstl/pstl_config.h>.
3276
3277 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3278
3279         Cleanup algorithm implementations
3280         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
3281         execution policy.
3282         (mismatch): Forward execution policy.
3283         (equal): Qualify call to std::equal().
3284         (partial_sort): Forward execution policy.
3285         (inplace_merge): Forward execution policy.
3286
3287 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
3288
3289         Improve implementation of parallel equal()
3290         * include/pstl/algorithm_impl.h
3291         (__internal::__brick_equal): use "4 iterator" version of
3292         std::equal().
3293         (__internal::__brick_equal): use simd for random access
3294         iterators on unsequenced execution policies.
3295         (__internal::__pattern_equal): add "4 iterator" version
3296         (__internal::__pattern_equal): dispatch to simd __brick_equal
3297         for vector-only execution policies.
3298         (__internal::__pattern_equal): dispatch to __parallel_or for
3299         parallel execution policies.
3300         * include/pstl/glue_algorithm_impl.h
3301         (std::equal): dispatch to "4 iterator" version of
3302         __internal::__pattern_equal().
3303
3304 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
3305
3306         PR libstdc++/90105
3307         * include/bits/forward_list.h (operator==): Do not use operator!= to
3308         compare elements.
3309         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
3310         earlier in the list, so that sort is stable.
3311         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
3312         * testsuite/23_containers/forward_list/comparable.cc: Test with
3313         types that meet the minimum EqualityComparable and LessThanComparable
3314         requirements. Remove irrelevant comment.
3315
3316         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
3317         Do not depend on whether all alternative types are move constructible.
3318         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
3319         from the operand when deciding whether to perform the assignment.
3320         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
3321         with deleted move constructor and deleted move assignment operator.
3322         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
3323         behaviour of variants with DeletedMoves as an alternative.
3324         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
3325         (move_ctor, move_assign): Check that moving a variant with a
3326         DeletedMoves alternative falls back to copying instead of moving.
3327
3328         * testsuite/20_util/variant/compile.cc: Remove empty string literals
3329         from static_assert declarations.
3330
3331         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
3332         actually match its name.
3333         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
3334         (test_swap()): Fix result for MoveCtorOnly and check
3335         MoveCtorAndSwapOnly.
3336
3337         * include/std/optional (optional::value_or(U&&) &&): Add missing
3338         constexpr specifier.
3339         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
3340         for disengaged optionals and rvalue optionals.
3341         * testsuite/20_util/optional/observers/4.cc: Likewise.
3342
3343 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
3344
3345         * include/pstl/algorithm_impl.h: Uglify identfiers.
3346         * include/pstl/numeric_impl.h:  Uglify identfiers.
3347         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
3348
3349 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
3350
3351         * include/bits/c++config:
3352         Add definition for __PSTL_ASSERT.
3353         Add definition for __PSTL_ASSERT_MSG.
3354         * include/pstl/algorithm_impl.h: Replace use of assert().
3355         * include/pstl/numeric_impl.h: Replace use of assert().
3356         * include/pstl/parallel_backend_tbb.h:
3357         Replace use of assert().
3358         Replace use of __TBB_ASSERT().
3359         * include/pstl/parallel_backend_utils.h: Replace use of assert().
3360
3361 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
3362
3363         PR libstdc++/90046
3364         * src/c++17/memory_resource.cc
3365         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
3366         needed to allow placing a _Chunk at the end of the buffer.
3367         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
3368
3369 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
3370
3371         * doc/xml/faq.xml: Add information about emergency EH pool.
3372         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
3373         Move outdated information on mt_allocator to a separate section.
3374         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
3375         doesn't affect the default allocator.
3376
3377         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
3378         typo.
3379
3380         PR libstdc++/89851
3381         * testsuite/20_util/variant/89851.cc: New test.
3382
3383 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
3384
3385         * include/std/variant: Adjust whitespace. Add comments.
3386         (_Multi_array): Leave primary template undefined.
3387         (_Multi_array<_Tp>): Define partial specialization for base case of
3388         recursion.
3389         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
3390         which is always a reference.
3391         (__gen_vtable::_S_apply()): Remove function, inline body into
3392         default member initializer.
3393         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
3394
3395         * include/std/variant (__variant_idx_cookie): Add member type.
3396         (__visitor_result_type): Remove.
3397         (__do_visit): Use invoke_result instead of __visitor_result_type.
3398         * testsuite/20_util/variant/visit.cc: New test.
3399
3400         PR libstdc++/90008
3401         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
3402         unused capture.
3403         * testsuite/20_util/variant/90008.cc: New test.
3404
3405 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
3406
3407         * include/pstl/algorithm_impl.h: Add namespace qualification.
3408         * include/pstl/execution_defs.h: Add namespace qualification.
3409         * include/pstl/execution_impl.h: Add namespace qualification.
3410         * include/pstl/numeric_impl.h: Add namespace qualification.
3411         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
3412         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
3413         * include/pstl/parallel_backend_utils.h: Include <cassert>.
3414
3415 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
3416
3417         Fix visit<R> for variant.
3418         * include/std/variant (__do_visit): Add a template parameter
3419         for enforcing same return types for visit.
3420         (__gen_vtable_impl): Likewise.
3421         (_S_apply_single_alt): Adjust.
3422         (__visit_invoke_impl): New. Handle casting to void.
3423         (__do_visit_invoke): New. Enforces same return types.
3424         (__do_visit_invoke_r): New. Converts return types.
3425         (__visit_invoke): Adjust.
3426         (__gen_vtable):  Add a template parameter for enforcing
3427         same return types for visit.
3428         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
3429         different return types.
3430         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
3431         visitors with different return types don't accidentally
3432         compile with regular visitation.
3433
3434 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
3435
3436         * testsuite/27_io/filesystem/iterators/caching.cc: Add
3437         dg-require-filesystem-ts.
3438
3439 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
3440
3441         * doc/xml/manual/status_cxx2020.xml: Update status.
3442         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
3443         * testsuite/20_util/variant/visit_r.cc: New test.
3444
3445         * include/bits/fs_dir.h (directory_iterator::operator*)
3446         (directory_iterator::operator->): Add noexcept.
3447         (operator==, operator!=): Replace namespace-scope equality operators
3448         for directory iterators with hidden friends.
3449
3450         PR libstdc++/89986
3451         * config/abi/pre/gnu.ver: Add missing exports.
3452         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
3453         increment member.
3454
3455         * config/abi/pre/gnu.ver: Export new symbols.
3456         * include/bits/fs_dir.h (recursive_directory_iterator::options())
3457         (recursive_directory_iterator::recursion_pending())
3458         (recursive_directory_iterator::disable_recursion_pending()): Remove
3459         inline definitions. Make noexcept.
3460         (recursive_directory_iterator::depth())
3461         (recursive_directory_iterator::operator*())
3462         (recursive_directory_iterator::operator->()): Make noexcept.
3463         (recursive_directory_iterator::_M_options)
3464         (recursive_directory_iterator::_M_pending): Remove data members.
3465         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
3466         (recursive_directory_iterator::recursive_directory_iterator): Remove
3467         ctor-initializer. Use new constructor for _Dir_stack.
3468         (recursive_directory_iterator::options())
3469         (recursive_directory_iterator::recursion_pending())
3470         (recursive_directory_iterator::disable_recursion_pending()): Add
3471         non-inline definitions.
3472         (recursive_directory_iterator::depth()): Make noexcept.
3473         (recursive_directory_iterator::increment(error_code&))
3474         (recursive_directory_iterator::pop(error_code&)): Adjust to new
3475         location of options and recursion_pending members.
3476         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
3477         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
3478         user-declared move constructor and assignment operator, to make the
3479         type move-only.
3480
3481         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
3482         d_type == DT_UNKNOWN immediately.
3483         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
3484         handling here.
3485         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
3486
3487         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
3488         assignment.
3489         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
3490         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
3491         assignment.
3492
3493         PR libstdc++/87431 (again)
3494         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
3495         Define partial specialization for basic_string.
3496         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
3497         shared_ptr and weak_ptr.
3498         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
3499         function.
3500         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
3501         vector.
3502         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
3503         unique_ptr.
3504         * include/debug/vector (_Never_valueless_alt): Likewise for debug
3505         vector.
3506         * include/std/any (_Never_valueless_alt): Define explicit
3507         specialization for any.
3508         * include/std/variant (_Never_valueless_alt): Define primary template.
3509         (__never_valueless): Use _Never_valueless_alt instead of
3510         is_trivially_copyable.
3511         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
3512         initializations to avoid try-catch overhead. Add special case for
3513         scalars produced by potentially-throwing conversions. Use
3514         _Never_valueless_alt instead of is_trivially_copyable for the
3515         remaining strong exception-safety cases.
3516         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
3517         * testsuite/20_util/variant/87431.cc: Run both test functions.
3518         * testsuite/20_util/variant/exception_safety.cc: New test.
3519         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
3520         so the variant becomes valueless.
3521
3522 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
3523
3524         PR libstdc++/85184
3525         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
3526         Remove assertions.
3527         (variant::emplace<_Tp>): Return result of emplace<N> directly.
3528
3529         * include/std/string (__hash_string_base): New class template defining
3530         operator() for hashing strings.
3531         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
3532         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
3533         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
3534         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
3535
3536 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
3537
3538         Use single-visitation in variant assignment and swap and relops.
3539         Also use indices instead of types when checking whether
3540         variants hold the same thing.
3541         * include/std/variant (__do_visit): Add a template parameter
3542         for index visitation, invoke with indices if index visitation
3543         is used.
3544         (__variant_idx_cookie): New.
3545         (__visit_with_index): Likewise.
3546         (_Copy_assign_base::operator=): Do single-visitation with
3547         an index visitor.
3548         (_Move_assign_base::operator=): Likewise.
3549         (_Extra_visit_slot_needed): Adjust.
3550         (__visit_invoke): Call with indices if it's an index visitor.
3551         (relops): Do single-visitation with an index visitor.
3552         (swap): Likewise.
3553         (__visitor_result_type): New.
3554
3555 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
3556
3557         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
3558
3559 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
3560
3561         Don't revisit a variant we are already visiting.
3562         * include/std/variant (__variant_construct_single): New.
3563         (__variant_construct): Use it.
3564         (_M_destructive_move): Likewise.
3565         (_M_destructive_copy): Likewise.
3566         (_Copy_assign_base::operator=): Adjust.
3567         (_Move_assign_base::operator=): Likewise.
3568         (swap): Likewise.
3569
3570 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
3571
3572         PR libstdc++/85965
3573         * include/bits/hashtable.h (_Hashtable): Move static assertions to
3574         destructor so they are not evaluated until the _Key type is complete.
3575         * include/bits/stl_tree.h (_Rb_tree): Likewise.
3576         * testsuite/23_containers/set/85965.cc: New test.
3577         * testsuite/23_containers/unordered_set/85965.cc: New test.
3578         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
3579         with regexp matching the corresponding _Rb_tree specialization.
3580         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
3581         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
3582         * testsuite/23_containers/set/48101_neg.cc: Likewise.
3583         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
3584         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
3585         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
3586         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
3587
3588 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
3589
3590         PR libstdc++/89825
3591         Fix based on a suggestion by Antony Polukhin.
3592         * include/std/variant (__never_valueless): New.
3593         (_M_valid): Use it.
3594         (_Extra_visit_slot_needed): New.
3595         (_Multi_array): Use it.
3596         (_S_apply_all_alts): Likewise.
3597
3598 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
3599
3600         PR libstdc++/89824
3601         Fix based on a suggestion by Antony Polukhin.
3602         * include/std/variant (__gen_vtable): Don't reserve an
3603         additional table slot, _Multi_array already does that.
3604
3605 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
3606
3607         PR libstdc++/89816
3608         Fix based on a suggestion by Antony Polukhin.
3609         * include/std/variant (__variant_construct): Capture a pointer
3610         to the storage and visit just one variant.
3611
3612 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
3613
3614         * doc/xml/manual/backwards_compatibility.xml: Remove link to
3615         Doxygen-generated pages with unstable URL.
3616         * doc/xml/manual/concurrency_extensions.xml: Likewise.
3617         * doc/xml/manual/extensions.xml: Likewise.
3618         * doc/xml/manual/parallel_mode.xml: Likewise.
3619         * doc/xml/manual/support.xml: Likewise.
3620
3621         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
3622         avoid -Wconversion warnings.
3623
3624 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
3625
3626         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
3627         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
3628         (allstamped): Add stamp-pstl.
3629         (install-headers): Add ptsl_builddir.
3630         * include/Makefile.in: Regenerate.
3631         * include/bits/c++config: Add pstl configuration.
3632         * include/pstl/LICENSE.txt: New file.
3633         * include/pstl/algorithm_fwd.h: New file.
3634         * include/pstl/algorithm_impl.h: New file.
3635         * include/pstl/execution_defs.h: New file.
3636         * include/pstl/execution_impl.h: New file.
3637         * include/pstl/glue_algorithm_defs.h: New file.
3638         * include/pstl/glue_algorithm_impl.h: New file.
3639         * include/pstl/glue_execution_defs.h: New file.
3640         * include/pstl/glue_memory_defs.h: New file.
3641         * include/pstl/glue_memory_impl.h: New file.
3642         * include/pstl/glue_numeric_defs.h: New file.
3643         * include/pstl/glue_numeric_impl.h: New file.
3644         * include/pstl/memory_impl.h: New file.
3645         * include/pstl/numeric_fwd.h: New file.
3646         * include/pstl/numeric_impl.h: New file.
3647         * include/pstl/parallel_backend.h: New file.
3648         * include/pstl/parallel_backend_tbb.h: New file.
3649         * include/pstl/parallel_backend_utils.h: New file.
3650         * include/pstl/parallel_impl.h: New file.
3651         * include/pstl/pstl_config.h: New file.
3652         * include/pstl/unseq_backend_simd.h: New file.
3653         * include/pstl/utils.h: New file.
3654         * include/std/algorithm: Include parallel algorithm implementations.
3655         * include/std/execution: New file.
3656         * include/std/memory: Include parallel algorithm implementations.
3657         * include/std/numeric: Include parallel algorithm implementations.
3658         * include/std/version: Add parallel algorithms feature test macro.
3659         * testsuite/util/pstl/pstl_test_config.h: New file.
3660         * testsuite/util/pstl/test_utils.h: New file.
3661         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
3662         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
3663         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
3664         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
3665         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
3666         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
3667         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
3668         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
3669         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
3670         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
3671         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
3672         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
3673         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
3674         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
3675         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
3676         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
3677         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
3678         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
3679         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
3680         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
3681         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
3682         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
3683         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
3684         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
3685         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
3686         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
3687         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
3688         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
3689         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
3690         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
3691         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
3692         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
3693         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
3694         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
3695         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
3696         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
3697         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
3698         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
3699         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
3700         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
3701         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
3702         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
3703         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
3704         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
3705         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
3706         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
3707         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
3708         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
3709         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
3710         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
3711         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
3712         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
3713         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
3714         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
3715         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
3716         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
3717         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
3718         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
3719         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
3720         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
3721         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
3722         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
3723         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
3724         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
3725         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
3726         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
3727         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
3728         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
3729         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
3730         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
3731         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
3732         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
3733         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
3734         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
3735         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
3736         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
3737         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
3738         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
3739         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
3740         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
3741         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
3742         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
3743         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
3744         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
3745         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
3746         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
3747         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
3748         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
3749         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
3750         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
3751         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
3752         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
3753         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
3754         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
3755         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
3756         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
3757         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
3758         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
3759         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
3760         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
3761         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
3762         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
3763         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
3764         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
3765         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
3766         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
3767
3768 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
3769
3770         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
3771         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
3772         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
3773         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
3774         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
3775         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
3776         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
3777         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
3778         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
3779         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
3780         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
3781         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
3782         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
3783         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
3784         when the special functions IS is enabled, not for C++17.
3785         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
3786         Replace with ...
3787         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
3788         without checks for special functions in C++17.
3789         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
3790         New test.
3791
3792         PR libstdc++/88066
3793         * include/backward/hash_map: Use <> for includes not "".
3794         * include/backward/hash_set: Likewise.
3795         * include/backward/strstream: Likewise.
3796         * include/tr1/bessel_function.tcc: Likewise.
3797         * include/tr1/exp_integral.tcc: Likewise.
3798         * include/tr1/legendre_function.tcc: Likewise.
3799         * include/tr1/modified_bessel_func.tcc: Likewise.
3800         * include/tr1/riemann_zeta.tcc: Likewise.
3801
3802 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
3803
3804         * doc/xml/manual/allocator.xml: Link to table documenting evolution
3805         of extension allocators.
3806         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
3807         Document new headers in 7.2, 8.1 and 9.1 releases.
3808         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
3809         * doc/html/*: Regenerate.
3810
3811 2019-03-12  John David Anglin  <dave.anglin@bell.net>
3812
3813         PR libstdc++/89461
3814         * testsuite/lib/libstdc++.exp: Locate libatomic.
3815         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
3816         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
3817         libatomic options.
3818         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
3819         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
3820         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
3821         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
3822
3823 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
3824
3825         PR libstdc++/89460
3826         * configure.ac: Check for sockatmark.
3827         * crossconfig.m4: Check for sockatmark.
3828         * config.h.in: Regenerate.
3829         * configure: Regenerate.
3830         * include/experimental/internet (address_v4::_S_hton): Rename
3831         overloaded functions to _S_hton_16 and _S_ntoh_16.
3832         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
3833         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
3834         * include/experimental/socket (basic_socket::at_mark): Check
3835         _GLIBCXX_HAVE_SOCKATMARK.
3836
3837         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
3838         const variables instead of macros.
3839
3840         PR libstdc++/89629
3841         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
3842         Use correct type for len_aligned.
3843         * testsuite/20_util/hash/89629.cc: New test.
3844
3845 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
3846
3847         PR libstdc++/89641
3848         * include/std/atomic (atomic<T>::store, atomic<T>::load,
3849         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
3850         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
3851         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
3852         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
3853         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
3854         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
3855         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
3856         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
3857         memory_order_seq_cst to int.
3858
3859 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
3860
3861         * doc/xml/manual/using.xml: Use link element instead of xref.
3862         * doc/html/*: Regenerate.
3863
3864         * include/bits/fs_path.h (path::format): Add fixed underlying type.
3865
3866 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
3867
3868         PR libstdc++/89477
3869         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
3870         parameters in deduction guides.
3871         * include/debug/multimap.h (multimap): Likewise.
3872         * include/debug/set.h (multimap): Likewise.
3873         * include/debug/multiset.h (multimap): Likewise.
3874         * include/debug/unordered_map (unordered_map): Likewise.
3875         (unordered_multimap): Likewise.
3876         * include/debug/unordered_set (unordered_set): Likewise.
3877         (unordered_multiset): Likewise.
3878
3879         PR libstdc++/89608
3880         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
3881         Invalidate all iterators in case of rehash.
3882         (unordered_multimap<>::_M_check_rehashed): Likewise.
3883         * include/debug/unordered_set
3884         (unordered_set<>::_M_check_rehashed): Likewise.
3885         (unordered_multiset<>::_M_check_rehashed): Likewise.
3886         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
3887
3888 2019-03-07  Andreas Schwab  <schwab@suse.de>
3889
3890         * config/abi/post/riscv64-linux-gnu: New directory.
3891         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
3892
3893 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
3894
3895         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
3896         compile test to run. Fix typo.
3897
3898         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
3899         * doc/html/*: Regenerate.
3900
3901         P0356R5 Simplified partial function application
3902         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
3903         helpers for bind_front.
3904         (bind_front, __cpp_lib_bind_front): Define.
3905         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
3906
3907 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
3908
3909         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
3910         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
3911         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
3912         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
3913
3914 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
3915
3916         PR libstdc++/86655 - std::assoc_legendre should not constrain
3917         the value of m (or x).
3918         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
3919         __sph_legendre): If degree > order Don't throw, return 0.
3920         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
3921         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
3922         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
3923         * testsuite/tr1/5_numerical_facilities/special_functions/
3924         02_assoc_legendre/pr86655.cc: New test.
3925         * testsuite/tr1/5_numerical_facilities/special_functions/
3926         22_sph_legendre/pr86655.cc: New test.
3927
3928 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
3929
3930         Rewrite variant.
3931         Also PR libstdc++/85517
3932         * include/std/variant (__do_visit): New.
3933         (__variant_cast): Likewise.
3934         (__variant_cookie): Likewise.
3935         (__erased_*): Remove.
3936         (_Variant_storage::_S_vtable): Likewise.
3937         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
3938         (_Variant_storage::__M_reset): Adjust.
3939         (__variant_construct): New.
3940         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
3941         __variant_construct.
3942         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
3943         (_Move_ctor_base::__M_destructive_copy): New.
3944         (_Move_ctor_base::__M_destructive_move): Adjust to use
3945         __variant_construct.
3946         (_Copy_assign_base::operator=): Adjust to use __do_visit.
3947         (_Copy_assign_alias): Adjust to check both copy assignment
3948         and copy construction for triviality.
3949         (_Move_assign_base::operator=): Adjust to use __do_visit.
3950         (_Multi_array): Add support for visitors that accept and return
3951         a __variant_cookie.
3952         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
3953         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
3954         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
3955         a __variant_cookie temporary for a variant that is valueless and..
3956         (__gen_vtable_impl::__visit_invoke): ..adjust here.
3957         (__gen_vtable::_Array_type): Conditionally make space for
3958         the __variant_cookie visitor case.
3959         (__variant_construct_by_index): New.
3960         (get_if): Adjust to use std::addressof.
3961         (relops): Adjust to use __do_visit.
3962         (variant): Add __variant_cast and __variant_construct_by_index
3963         as friends.
3964         (variant::emplace): Use _M_reset() and __variant_construct_by_index
3965         instead of self-destruction.
3966         (variant::swap): Adjust to use __do_visit.
3967         (visit): Reimplement in terms of __do_visit.
3968         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
3969         * testsuite/20_util/variant/compile.cc: Adjust.
3970         * testsuite/20_util/variant/run.cc: Likewise.
3971
3972 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
3973
3974         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
3975         constant.
3976         * testsuite/experimental/feat-char8_t.cc: Likewise.
3977
3978          * include/std/type_traits [C++20] (is_bounded_array)
3979          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
3980          Define.
3981          * testsuite/20_util/is_bounded_array/requirements/
3982          explicit_instantiation.cc: New test.
3983          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
3984          test.
3985          * testsuite/20_util/is_bounded_array/value.cc: New test.
3986          * testsuite/20_util/is_unbounded_array/requirements/
3987          explicit_instantiation.cc: New test.
3988          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
3989          * test.
3990          * testsuite/20_util/is_unbounded_array/value.cc: New test.
3991
3992         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
3993         Add constexpr.
3994         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
3995
3996 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
3997
3998         * include/c_compatibility/math.h [C++20] (lerp): Add using
3999         declaration.
4000         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
4001         (__lerp): Define function template to implement lerp.
4002         (lerp(float, float, float), lerp(double, double, double))
4003         (lerp(long double, long double, long double)): Define for C++20.
4004         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
4005         (midpoint(T, T), midpoint(T*, T*)): Define.
4006         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
4007         * testsuite/26_numerics/lerp.cc: New test.
4008         * testsuite/26_numerics/midpoint/floating.cc: New test.
4009         * testsuite/26_numerics/midpoint/integral.cc: New test.
4010         * testsuite/26_numerics/midpoint/pointer.cc: New test.
4011
4012 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
4013
4014         PR libstdc++/88996 Implement P0439R0
4015         Make std::memory_order a scoped enumeration.
4016         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
4017         add variables for the old enumerators.  Adjust calls.
4018         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
4019         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
4020
4021 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
4022
4023         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
4024         directive.
4025
4026         * include/std/memory_resource (polymorphic_allocator): Add default
4027         template argument for C++20.
4028         (polymorphic_allocator::allocate_bytes)
4029         (polymorphic_allocator::deallocate_bytes)
4030         (polymorphic_allocator::allocate_object)
4031         (polymorphic_allocator::deallocate_object)
4032         (polymorphic_allocator::new_object)
4033         (polymorphic_allocator::delete_object): New member functions for
4034         C++20.
4035         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
4036         test.
4037
4038 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
4039
4040         PR libstdc++/89562
4041         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
4042         mode for mingw.
4043
4044 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
4045
4046         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
4047         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
4048
4049         * include/std/memory (uses_allocator_construction_args): New set of
4050         overloaded functions.
4051         (make_obj_using_allocator, uninitialized_construct_using_allocator):
4052         New functions.
4053         * include/std/memory_resource (polymorphic_allocator::construct)
4054         [__cplusplus > 201703l]: Replace all overloads with a single function
4055         using uses_allocator_construction_args.
4056         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
4057         test.
4058         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
4059
4060 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
4061
4062         PR libstdc++/89466
4063         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
4064         stylesheet directories before check for xsltproc. Try to use
4065         xmlcatalog to find local stylesheet directory before trying hardcoded
4066         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
4067         check to look for the same stylesheet as doc/Makefile.am uses. Don't
4068         use xsltproc if xmlcatalog fails to find a local stylesheet.
4069         * configure.ac: Check for xmlcatalog.
4070         * Makefile.in: Regenerate.
4071         * configure: Likewise.
4072         * doc/Makefile.in: Likewise.
4073         * include/Makefile.in: Likewise.
4074         * libsupc++/Makefile.in: Likewise.
4075         * po/Makefile.in: Likewise.
4076         * python/Makefile.in: Likewise.
4077         * src/Makefile.in: Likewise.
4078         * src/c++11/Makefile.in: Likewise.
4079         * src/c++17/Makefile.in: Likewise.
4080         * src/c++98/Makefile.in: Likewise.
4081         * src/filesystem/Makefile.in: Likewise.
4082         * testsuite/Makefile.in: Likewise.
4083
4084 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
4085
4086         PR libstdc++/89477
4087         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
4088         container deduction guides.
4089         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
4090         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
4091         parameters in deduction guides.
4092         * include/bits/stl_multimap.h (multimap): Likewise.
4093         * include/bits/stl_multiset.h (multiset): Likewise.
4094         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
4095         * include/bits/stl_set.h (set): Likewise.
4096         * include/bits/stl_stack.h (stack): Likewise.
4097         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
4098         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
4099         constrain parameters in deduction guides.
4100         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
4101         Likewise.
4102         * testsuite/23_containers/map/cons/deduction.cc: Test additional
4103         deduction cases.
4104         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
4105         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
4106         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
4107         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
4108         Likewise.
4109         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
4110         Likewise.
4111         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
4112
4113         PR libstdc++/89416
4114         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
4115         to class template and partial specialization using void_t.
4116         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4117
4118 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
4119
4120         PR libstdc++/89416
4121         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
4122         copy and move members public.
4123
4124 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
4125
4126         * include/std/type_traits (__underlying_type_impl): New helper to
4127         make underlying_type SFINAE-friendly.
4128         (underlying_type): Derive from __underlying_type_impl.
4129         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
4130         test.
4131
4132         PR libstdc++/89446
4133         * include/bits/char_traits.h (__constant_char_array): Check index is
4134         in range before dereferencing.
4135         (char_traits<char>::compare, char_traits<char>::find)
4136         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
4137         immediately if n is zero.
4138         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
4139         Remove workarounds for PR 67026.
4140         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
4141         New test.
4142         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
4143         New test.
4144
4145 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4146
4147         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
4148         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
4149
4150 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
4151
4152         PR libstdc++/89402
4153         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
4154         type to std::size_t and argument to type to long double.
4155
4156 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4157
4158         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
4159         * config/abi/post/sparc64-linux-gnu: New directory.
4160         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
4161         * config/abi/post/sparc64-linux-gnu/32: New directory.
4162         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
4163
4164 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4165
4166         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
4167         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
4168         test.
4169
4170 2019-02-22  Tom Honermann  <tom@honermann.net>
4171
4172         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
4173         printers for u8string and u8string_view.
4174
4175 2019-02-22  Tom Honermann  <tom@honermann.net>
4176
4177         * testsuite/18_support/byte/ops.cc: Validate
4178         std::to_integer<char8_t>, std::to_integer<char16_t>, and
4179         std::to_integer<char32_t>.
4180         * testsuite/18_support/numeric_limits/dr559.cc: Validate
4181         std::numeric_limits<char8_t>.
4182         * testsuite/18_support/numeric_limits/lowest.cc: Validate
4183         std::numeric_limits<char8_t>::lowest().
4184         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
4185         std::numeric_limits<char8_t>::max_digits10.
4186         * testsuite/18_support/type_info/fundamental.cc: Validate
4187         typeinfo for char8_t.
4188         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
4189         std::from_chars with char8_t.
4190         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
4191         Validate explicit instantiation of std::hash<char8_t>.
4192         * testsuite/20_util/is_integral/value.cc: Validate
4193         std::is_integral<char8_t>.
4194         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
4195         Validate std::make_signed<char8_t>.
4196         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
4197         Validate u8string construction from char8_t sources.
4198         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
4199         std::pmr::u8string.
4200         * testsuite/21_strings/basic_string_view/operations/compare/
4201         char/70483.cc: Validate substr operations on u8string_view.
4202         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
4203         the u8string_view typedef is defined.
4204         * testsuite/21_strings/char_traits/requirements/
4205         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
4206         member functions.
4207         * testsuite/21_strings/char_traits/requirements/
4208         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
4209         constexpr member functions.
4210         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
4211         that the u8string typedef is defined.
4212         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
4213         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
4214         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
4215         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
4216         numbers.
4217         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
4218         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
4219         Likewise.
4220         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
4221         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
4222         Validate std::atomic<char8_t>::is_always_lock_free
4223         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
4224         Update line numbers.
4225         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
4226         Likewise.
4227         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
4228         Likewise.
4229         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
4230         Validate std::experimental::pmr::u8string.
4231         * testsuite/experimental/string_view/typedefs.cc: Validate that the
4232         u8string_view typedef is defined.
4233         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
4234         char32_t to the typelists.
4235
4236 2019-02-22  Tom Honermann  <tom@honermann.net>
4237
4238         * include/ext/typelist.h: Constrain a partial specialization of
4239         typelist::detail::append_ to only match chain<T1,T2>.
4240
4241 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4242
4243         PR libstdc++/89416
4244         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
4245         class template with class. Replace move and copy member types with
4246         member alias templates, so they are only instantiated when needed.
4247         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4248         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
4249         test for C++11/14/17 as well.
4250         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
4251         test.
4252
4253 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
4254
4255         PR libstdc++/89402
4256         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
4257         _GLIBCXX_PURE to the alias declaration.
4258
4259 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
4260
4261         * testsuite/21_strings/basic_string/literals/types.cc
4262         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
4263         * testsuite/21_strings/basic_string/literals/values.cc
4264         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4265         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
4266         potentially having different type.
4267         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
4268         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
4269         to char.
4270         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
4271         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
4272         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
4273         string literals only using basic character set.
4274         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
4275         u8 literals to char.
4276         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
4277         Test ATOMIC_CHAR8_T_LOCK_FREE.
4278         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
4279         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
4280         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
4281         * testsuite/experimental/string_view/literals/types.cc
4282         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
4283         literal.
4284         * testsuite/experimental/string_view/literals/values.cc
4285         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4286
4287 2019-02-19  Tom Honermann  <tom@honermann.net>
4288
4289         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
4290         from char16_32_t.cc; validates numeric_limits<char8_t>.
4291         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
4292         test cloned from types.cc; validates operator""s for char8_t
4293         returns u8string.
4294         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
4295         test cloned from values.cc; validates construction and comparison
4296         of u8string values.
4297         * testsuite/21_strings/basic_string/requirements/
4298         /explicit_instantiation/char8_t/1.cc: New test cloned from
4299         char16_t/1.cc; validates explicit instantiation of
4300         basic_string<char8_t>.
4301         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
4302         New test cloned from types.cc; validates operator""sv for char8_t
4303         returns u8string_view.
4304         * testsuite/21_strings/basic_string_view/literals/
4305         values-char8_t.cc: New test cloned from values.cc; validates
4306         construction and comparison of u8string_view values.
4307         * testsuite/21_strings/basic_string_view/requirements/
4308         explicit_instantiation/char8_t/1.cc: New test cloned from
4309         char16_t/1.cc; validates explicit instantiation of
4310         basic_string_view<char8_t>.
4311         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
4312         New test cloned from char16_t/65049.cc; validates that
4313         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
4314         * testsuite/21_strings/char_traits/requirements/char8_t/
4315         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
4316         that char_traits<char8_t> member typedefs are present and correct.
4317         * testsuite/21_strings/char_traits/requirements/
4318         explicit_instantiation/char8_t/1.cc: New test cloned from
4319         char16_t/1.cc; validates explicit instantiation of
4320         char_traits<char8_t>.
4321         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
4322         from char16_t.cc: validates
4323         codecvt<char16_t, char8_t, mbstate_t>.
4324         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
4325         from char32_t.cc: validates
4326         codecvt<char32_t, char8_t, mbstate_t>.
4327         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
4328         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
4329         codecvt<char32_t, char8_t, std::mbstate_t>.
4330         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
4331         test cloned from string.cc; validates filesystem::path construction
4332         from char8_t input.
4333         * testsuite/experimental/feat-char8_t.cc: New test; validates that
4334         the __cpp_lib_char8_t feature test macro is defined with the
4335         correct value.
4336         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
4337         New test cloned from string.cc; validates filesystem::path
4338         construction from char8_t input.
4339         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
4340         test cloned from types.cc; validates operator""sv for char8_t
4341         returns u8string_view.
4342         * testsuite/experimental/string_view/literals/values-char8_t.cc:
4343         New test cloned from values.cc; validates construction and
4344         comparison of u8string_view values.
4345         * testsuite/experimental/string_view/requirements/
4346         explicit_instantiation/char8_t/1.cc: New test cloned from
4347         char16_t/1.cc; validates explicit instantiation of
4348         basic_string_view<char8_t>.
4349         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
4350         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
4351         enabled.
4352
4353 2019-02-19  Tom Honermann  <tom@honermann.net>
4354
4355         P0482R5 char8_t: Standard library support
4356         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
4357         typeinfo symbols for char8_t.
4358         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
4359         (GLIBCXX_3.4.26): Add symbols for specializations of
4360         numeric_limits and codecvt that involve char8_t.
4361         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
4362         * include/bits/atomic_base.h: Add atomic_char8_t.
4363         * include/bits/basic_string.h: Add std::hash<u8string> and
4364         operator""s(const char8_t*, size_t).
4365         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
4366         __cpp_lib_char8_t.
4367         * include/bits/char_traits.h: Add char_traits<char8_t>.
4368         * include/bits/codecvt.h: Add
4369         codecvt<char16_t, char8_t, mbstate_t>,
4370         codecvt<char32_t, char8_t, mbstate_t>,
4371         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4372         codecvt_byname<char32_t, char8_t, mbstate_t>.
4373         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
4374         recognize char8_t as an integral type.
4375         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
4376         char8_t.
4377         (path::u8string): Return std::u8string when char8_t support is
4378         enabled.
4379         (path::generic_u8string): Likewise.
4380         (path::_S_convert): Handle conversion from char8_t input.
4381         (path::_S_str_convert): Likewise.
4382         * include/bits/functional_hash.h: Add hash<char8_t>.
4383         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
4384         char8_t.
4385         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
4386         for new char8_t specializations.
4387         * include/bits/localefwd.h: Add missing declarations of
4388         codecvt<char16_t, char, mbstate_t> and
4389         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
4390         codecvt<char16_t, char8_t, mbstate_t> and
4391         codecvt<char32_t, char8_t, mbstate_t>.
4392         * include/bits/postypes.h: Add u8streampos
4393         * include/bits/stringfwd.h: Add declarations of
4394         char_traits<char8_t> and u8string.
4395         * include/c_global/cstddef: Add __byte_operand<char8_t>.
4396         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
4397         Recognize char8_t.
4398         (path::u8string): Return std::u8string when char8_t support is
4399         enabled.
4400         (path::generic_u8string): Likewise.
4401         (path::_S_convert): Handle conversion from char8_t input.
4402         (path::_S_str_convert): Likewise.
4403         * include/experimental/string: Add u8string.
4404         * include/experimental/string_view: Add u8string_view,
4405         hash<experimental::u8string_view>, and
4406         operator""sv(const char8_t*, size_t).
4407         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
4408         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
4409         as a character type.
4410         * include/std/limits: Add numeric_limits<char8_t>.
4411         * include/std/string_view: Add u8string_view,
4412         hash<experimental::u8string_view>, and
4413         operator""sv(const char8_t*, size_t).
4414         * include/std/type_traits: Add __is_integral_helper<char8_t>,
4415         __make_unsigned<char8_t>, and __make_signed<char8_t>.
4416         * libsupc++/atomic_lockfree_defines.h: Define
4417         ATOMIC_CHAR8_T_LOCK_FREE.
4418         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
4419         codecvt.cc and limits.cc so that char8_t specializations of
4420         numeric_limits and codecvt and emitted.
4421         * src/c++11/Makefile.in: Likewise.
4422         * src/c++11/codecvt.cc: Define members of
4423         codecvt<char16_t, char8_t, mbstate_t>,
4424         codecvt<char32_t, char8_t, mbstate_t>,
4425         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4426         codecvt_byname<char32_t, char8_t, mbstate_t>.
4427         * src/c++11/limits.cc: Define members of
4428         numeric_limits<char8_t>.
4429         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
4430         locale_init.cc and localename.cc.
4431         * src/c++98/Makefile.in: Likewise.
4432         * src/c++98/locale_init.cc: Add initialization for the
4433         codecvt<char16_t, char8_t, mbstate_t> and
4434         codecvt<char32_t, char8_t, mbstate_t> facets.
4435         * src/c++98/localename.cc: Likewise.
4436         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
4437
4438 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
4439
4440         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
4441         * 27_io/filesystem/operations/resize_file.cc: Likewise.
4442         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
4443
4444 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
4445
4446         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
4447         * doc/html/*: Regenerate.
4448
4449         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
4450         * doc/html/*: Regenerate.
4451
4452         * doc/xml/manual/intro.xml: Document LWG 2586 status.
4453         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
4454         allocator type in is_constructible checks.
4455         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
4456         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
4457         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
4458         problematic type from LWG 2586 discussion.
4459         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
4460         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
4461
4462         * configure.ac: Check for C11 timespec_get function.
4463         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
4464         (openbsd): Likewise
4465         * config.h.in: Regenerate.
4466         * configure: Regenerate.
4467         * include/c_global/ctime (timespec, timespec_get): Add to namespace
4468         std for C++17 and up.
4469
4470         * doc/xml/manual/intro.xml: Document LWG 2537 status.
4471         * include/bits/stl_queue.h
4472         (priority_queue(const Compare&, const Container&, const Alloc&))
4473         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
4474         make_heap.
4475         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
4476
4477         * doc/xml/manual/intro.xml: Document LWG 2566 status.
4478         * include/bits/stl_queue.h (queue, priority_queue): Add static
4479         assertions to enforce LWG 2566 requirement on value_type.
4480         * include/bits/stl_stack.h (stack): Likewise.
4481
4482         PR middle-end/89303
4483         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
4484
4485         * doc/xml/manual/intro.xml: Document LWG 2735 status.
4486         * include/bits/std_abs.h: Add comment about LWG 2735.
4487         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
4488
4489 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
4490
4491         PR libstdc++/89345
4492         * include/std/version [__cpp_impl_destroying_delete]
4493         (__cpp_lib_destroying_delete): Only define for C++2a and later.
4494         * libsupc++/new [__cpp_impl_destroying_delete]
4495         (__cpp_lib_destroying_delete): Likewise.
4496         (destroying_delete_t, destroying_delete): Likewise, but define even
4497         when __cpp_impl_destroying_delete is not defined.
4498         * testsuite/18_support/destroying_delete.cc: New test.
4499
4500 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
4501
4502         PR libstdc++/89023
4503         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
4504         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
4505         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
4506         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
4507
4508 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
4509
4510         PR libstdc++/71044
4511         * include/bits/fs_path.h (path::has_root_name)
4512         (path::has_root_directory, path::has_root_path)
4513         (path::has_relative_path, path::has_parent_path)
4514         (path::has_filename, path::has_stem, path::has_extension)
4515         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
4516         noexcept.
4517         * src/c++17/fs_path.cc (path::has_root_name)
4518         (path::has_root_directory, path::has_root_path)
4519         (path::has_relative_path, path::has_parent_path)
4520         (path::has_filename, path::_M_find_extension): Add noexcept.
4521
4522 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
4523
4524         PR libstdc++/89102 (partial)
4525         * include/std/type_traits (common_type<>): Define.
4526         (common_type<T>): Derive from common_type<T, T>.
4527         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
4528         Test zero-length template argument list.
4529         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
4530         Test additional single argument cases.
4531         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
4532         Adjust expected error.
4533
4534 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
4535
4536         PR libstdc++/89128
4537         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
4538         guides.
4539         * include/bits/stl_stack.h (stack): Likewise.
4540         * testsuite/23_containers/priority_queue/deduction.cc: New test.
4541         * testsuite/23_containers/queue/deduction.cc: New test.
4542         * testsuite/23_containers/stack/deduction.cc: New test.
4543
4544         PR libstdc++/89194
4545         * include/std/type_traits (__is_convertible_helper)
4546         (__is_convertible_helper<_From, _To, false>): Revert changes to
4547         support is_nothrow_convertible.
4548         (__is_nt_convertible_helper): New helper.
4549         (is_nothrow_convertible): Use __is_nt_convertible_helper.
4550
4551         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
4552         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
4553
4554         PR libstdc++/89130
4555         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
4556         __is_alloc_insertable_impl. Replace single type member with two
4557         members, one for each of copy and move insertable.
4558         (__is_move_insertable): New trait for internal use.
4559         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
4560         (vector::_S_nothrow_relocate(true_type)): New functions to
4561         conditionally check if __relocate_a can throw.
4562         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
4563         on __is_move_insertable.
4564         (vector::_S_do_relocate): New overloaded functions to conditionally
4565         call __relocate_a.
4566         (vector::_S_relocate): New function that dispatches to _S_do_relocate
4567         based on _S_use_relocate.
4568         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
4569         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
4570         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
4571
4572         PR libstdc++/89090
4573         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
4574         parameter unnamed. Add message to static assertion.
4575         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
4576         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
4577         in C++11 code.
4578
4579 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
4580
4581         PR libstdc++/87106
4582         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
4583         Rename...
4584         (__is_bitwise_relocatable): ... to this.
4585         (__relocate_a_1): Adapt.
4586         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
4587         (__is_bitwise_relocatable): ... to this.
4588
4589 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
4590
4591         PR libstdc++/89117
4592         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
4593         final component as well as from _M_pathname. Append the dot using
4594         operator+= instead of only to _M_pathname.
4595         (path::_M_find_extension): Reformat slightly.
4596         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
4597         Add more test cases.
4598
4599 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
4600
4601         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
4602
4603 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
4604
4605         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
4606         constexpr specifiers from arg and proj.
4607
4608         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
4609         __shared_ptr instantiations used by gcc4-compatible ABI.
4610
4611         * include/experimental/forward_list (experimental::erase): Qualify
4612         call to erase_if.
4613         * include/experimental/list (experimental::erase): Likewise.
4614         * include/std/forward_list (std::erase): Likewise.
4615         * include/std/list (std::erase): Likewise.
4616
4617         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
4618         C++2a.
4619         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
4620         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
4621         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
4622         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
4623         * testsuite/ext/array_allocator/26875.cc: Likewise.
4624         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
4625         * testsuite/util/replacement_memory_operators.h: Likewise.
4626         * testsuite/util/testsuite_allocator.h: Likewise.
4627
4628         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
4629         normal mode vector, even for debug mode.
4630         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
4631         Define alias template for normal mode vector.
4632
4633 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
4634
4635         PR libstdc++/68737
4636         * config/locale/generic/c_locale.h (__convert_from_v)
4637         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
4638         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
4639         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
4640         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
4641
4642 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
4643
4644         PR libstdc++/88840
4645         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
4646         data member with static member function _S_use_relocate().
4647         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
4648         (vector::_M_default_append): Use _S_use_relocate() instead of
4649         __use_relocate.
4650
4651         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
4652         sign of results.
4653
4654 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
4655
4656         PR libstdc++/88740
4657         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
4658         write to stderr instead of using printf.
4659
4660 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
4661
4662         PR libstdc++/86590
4663         * include/bits/char_traits.h (__constant_string_p,
4664         __constant_char_array_p): Use __builtin_is_constant_evaluated if
4665         available.
4666
4667 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
4668
4669         Implement C++20 P0600r1.
4670         * include/backward/hash_map: Add nodiscard attribute to empty.
4671         * include/backward/hash_set: Likewise.
4672         * backward/hashtable.h: Likewise.
4673         * include/bits/basic_string.h: Likewise.
4674         * include/bits/forward_list.h: Likewise.
4675         * include/bits/hashtable.h: Likewise.
4676         * include/bits/regex.h: Likewise.
4677         * include/bits/stl_deque.h: Likewise.
4678         * include/bits/stl_list.h: Likewise.
4679         * include/bits/stl_map.h: Likewise.
4680         * include/bits/stl_multimap.h: Likewise.
4681         * include/bits/stl_multiset.h: Likewise.
4682         * include/bits/stl_queue.h: Likewise.
4683         * include/bits/stl_set.h: Likewise.
4684         * include/bits/stl_stack.h: Likewise.
4685         * include/bits/stl_tree.h: Likewise.
4686         * include/bits/stl_vector.h: Likewise.
4687         * include/bits/unordered_map.h: Likewise.
4688         * include/bits/unordered_set.h: Likewise.
4689         * include/debug/array: Likewise.
4690         * include/experimental/any: Likewise.
4691         * include/experimental/bits/fs_path.h: Likewise.
4692         * include/experimental/internet: Likewise.
4693         * include/experimental/string_view: Likewise.
4694         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
4695         Likewise.
4696         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
4697         Likewise.
4698         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
4699         Likewise.
4700         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
4701         Likewise.
4702         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
4703         Likewise.
4704         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
4705         Likewise.
4706         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
4707         Likewise.
4708         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
4709         Likewise.
4710         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
4711         info_fn_imps.hpp: Likewise.
4712         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
4713         left_child_next_sibling_heap_.hpp: Likewise.
4714         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
4715         Likewise.
4716         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
4717         Likewise.
4718         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
4719         Likewise.
4720         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
4721         Likewise.
4722         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
4723         Likewise.
4724         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
4725         Likewise.
4726         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
4727         Likewise.
4728         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
4729         * include/ext/pb_ds/trie_policy.hpp: Likewise.
4730         * include/ext/rope: Likewise.
4731         * include/ext/slist: Likewise.
4732         * include/ext/vstring.h: Likewise.
4733         * include/profile/array: Likewise.
4734         * include/std/array: Likewise.
4735         * include/tr1/array: Likewise.
4736         * include/tr1/hashtable.h: Likewise.
4737         * include/tr1/regex: Likewise.
4738         * include/tr2/dynamic_bitset: Likewise.
4739         * include/bits/alloc_traits.h: Add nodiscard attribute to
4740         allocate.
4741         * include/experimental/memory_resource: Likewise.
4742         * include/ext/alloc_traits.h: Likewise.
4743         * include/ext/array_allocator.h: Likewise.
4744         * include/ext/bitmap_allocator.h: Likewise.
4745         * include/ext/debug_allocator.h: Likewise.
4746         * include/ext/extptr_allocator.h: Likewise.
4747         * include/ext/mt_allocator.h: Likewise.
4748         * include/ext/new_allocator.h: Likewise.
4749         * include/ext/pool_allocator.h: Likewise.
4750         * include/ext/throw_allocator.h: Likewise.
4751         * include/std/scoped_allocator: Likewise.
4752         * libsupc++/eh_alloc.cc: Likewise.
4753         * include/std/future: Add nodiscard attribute to async.
4754         * libsupc++/new: Add nodiscard attribute to new.
4755
4756 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
4757
4758         PR libstdc++/87514
4759         PR libstdc++/87520
4760         PR libstdc++/88782
4761         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
4762         * include/bits/shared_ptr.h
4763         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
4764         (allocate_shared): Change to use new tag type.
4765         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
4766         Declare new member function.
4767         (_Sp_alloc_shared_tag): Define new type.
4768         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
4769         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
4770         _Sp_make_shared_tag::_S_eq to check type_info.
4771         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
4772         Constrain to prevent being called with _Sp_alloc_shared_tag.
4773         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
4774         Replace constructor with ...
4775         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
4776         reference parameter so address of the new object can be returned to
4777         the caller. Obtain the allocator from the tag type.
4778         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
4779         constructor with ...
4780         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
4781         to the __shared_count constructor.
4782         (__allocate_shared): Change to use new tag type.
4783         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
4784
4785 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
4786
4787         * src/c++17/fs_ops.cc
4788         (equivalent(const path&, const path&, error_code&))
4789         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
4790         compare files instead of relying on incomplete info returned by stat.
4791
4792         PR libstdc++/88884
4793         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
4794         if the path is already absolute.
4795         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
4796         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
4797
4798         PR libstdc++/88881
4799         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
4800         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
4801         of filesystem::exists.
4802         (create_directories(const path&, error_code&)): Add assertions.
4803         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
4804         Add workaround for bug in _wstat for paths with trailing slash.
4805         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
4806         for expected behaviour on mingw.
4807         * testsuite/experimental/filesystem/operations/create_directories.cc:
4808         Likewise.
4809         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
4810         "TMP" instead of "TMPDIR" and clean environment before each test. Do
4811         not test permissions on mingw targets.
4812
4813 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
4814
4815         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
4816         constructors and open members taking wide strings. Fix patterns for
4817         filesystem::path members to match wstring_view parameters. Add
4818         exports for shared_ptr members used by directory iterators.
4819         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
4820         error code parameter if the file doesn't exist.
4821         * src/filesystem/ops.cc (remove(const path&, error_code&)):
4822         Likewise.
4823         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
4824         values for mingw targets, where "/" is not an absolute path. Do not
4825         test symlinks on mingw targets.
4826         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
4827         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
4828         on mingw targets.
4829         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
4830         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
4831         that each component of the path is created.
4832         * testsuite/experimental/filesystem/operations/create_directories.cc:
4833         Likewise.
4834         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
4835         permissions on mingw targets.
4836         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
4837         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
4838         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
4839         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
4840         mingw targets.
4841         * testsuite/experimental/filesystem/operations/permissions.cc:
4842         Likewise.
4843         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
4844         symlinks or permissions on mingw targets.
4845         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
4846         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
4847         symlinks on mingw targets.
4848         * testsuite/experimental/filesystem/operations/remove_all.cc:
4849         Likewise.
4850         * testsuite/27_io/filesystem/operations/status.cc: Do not test
4851         permissions on mingw targets.
4852         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
4853         test symlinks on mingw targets.
4854         * testsuite/experimental/filesystem/operations/space.cc: Fix test
4855         for mingw targets.
4856
4857 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
4858
4859         PR libstdc++/88738
4860         Warn about unused comparisons of shared_ptr/unique_ptr
4861         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
4862         * include/bits/shared_ptr.h: Use it for operator ==, !=,
4863         <, <=, >, >= for shared_ptr.
4864         * include/bits/unique_ptr.h: Likewise for unique_ptr.
4865
4866 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
4867
4868         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
4869         as 201611L, because P0497R0 changes are supported.
4870         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
4871
4872         * include/bits/erase_if.h [__cplusplus > 201703L]
4873         (__cpp_lib_erase_if): Only define for C++2a.
4874         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
4875         (__cpp_lib_null_iterators): Define.
4876         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
4877         (__cpp_lib_null_iterators): Define.
4878         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
4879
4880         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
4881         status.
4882         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
4883         Define.
4884         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
4885         changes are supported.
4886         * include/std/optional (__cpp_lib_optional): Likewise.
4887         * include/std/variant (__cpp_lib_variant): Likewise.
4888         * include/std/version [!__STRICT_ANSI__]
4889         (__cpp_lib_uncaught_exceptions): Define as long integer.
4890         [__cplusplus >= 201703L] (__cpp_lib_any)
4891         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
4892         (__cpp_lib_variant): Define for C++17.
4893         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
4894         as long integer.
4895         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
4896         integer.
4897
4898         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
4899
4900 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
4901
4902         PR libstdc++/88811
4903         PR libstdc++/83306
4904         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
4905         before second path.
4906         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
4907         test.
4908
4909 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
4910
4911         * doc/xml/manual/intro.xml: Include new section.
4912         * doc/xml/manual/status_cxx2017.xml: Document more
4913         implementation-defined properties of the library.
4914         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
4915         * doc/html/*: Regenerate.
4916
4917         * include/bits/refwrap.h [__cplusplus > 201703L]
4918         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
4919         (_Reference_wrapper_base_memfun): Do not define for C++2a.
4920         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
4921         for C++2a.
4922         (reference_wrapper::operator()): Add static assertion.
4923         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
4924
4925         * include/std/chrono (duration_values::zero(), duration_values::min())
4926         (duration_values::max()): Add noexcept.
4927         (duration::zero(), duration::min(), duration::max()): Likewise.
4928         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
4929         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
4930         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
4931
4932         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
4933
4934 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
4935
4936         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
4937         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
4938
4939 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
4940
4941         PR libstdc++/88802
4942         * include/bits/functional_hash.h (hash<nullptr_t>): Define
4943         specialization for C++17 (P0513R0, LWG 2817).
4944         * testsuite/20_util/hash/nullptr.cc: New test.
4945
4946         PR libstdc++/88125
4947         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
4948         pattern for std::basic_stringbuf::str().
4949
4950         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
4951         basic_ostream::operator<< patterns.
4952
4953 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
4954
4955         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
4956         test failures on targets with 32-bit time_t.
4957
4958         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
4959         * include/std/deque: Likewise.
4960         * include/std/forward_list: Likewise.
4961         * include/std/list: Likewise.
4962         * include/std/string: Likewise.
4963         * include/std/vector: Likewise.
4964         * include/std/version: Likewise.
4965         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
4966         * testsuite/23_containers/deque/erasure.cc: Likewise.
4967         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
4968         * testsuite/23_containers/list/erasure.cc: Likewise.
4969         * testsuite/23_containers/map/erasure.cc: Likewise.
4970         * testsuite/23_containers/set/erasure.cc: Likewise.
4971         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
4972         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
4973         * testsuite/23_containers/vector/erasure.cc: Likewise.
4974
4975         * include/experimental/internet [AI_NUMERICSERV]
4976         (resolver_base::numeric_service): Define conditionally.
4977         * testsuite/experimental/net/internet/resolver/base.cc: Test it
4978         conditionally.
4979         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
4980         Likewise.
4981
4982 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
4983             Jonathan Wakely  <jwakely@redhat.com>
4984
4985         Implement LWG 2221
4986         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
4987         (GLIBCXX_3.4.26): Add new exports.
4988         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
4989         correct list of sources.
4990         * include/Makefile.in: Regenerate.
4991         * include/std/ostream (operator<<(nullptr_t)): New member function.
4992         * src/c++17/ostream-inst.cc: New file.
4993         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
4994         test.
4995
4996 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
4997
4998         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
4999         of the source file containing the caller.
5000         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
5001         directories created by test.
5002         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5003         Likewise.
5004         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
5005         Likewise.
5006         * testsuite/experimental/filesystem/iterators/
5007         recursive_directory_iterator.cc: Likewise.
5008
5009 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
5010
5011         PR tree-optimization/88775
5012         * include/bits/stl_function.h (greater<_Tp*>::operator(),
5013         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
5014         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
5015         instead of __builtin_constant_p if available.  Don't bother with
5016         the pointer comparison in C++11 and earlier.
5017
5018 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
5019
5020         PR other/16615
5021
5022         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
5023         with "cannot".
5024
5025 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
5026
5027         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
5028         for filesystem::path. Give variables more distinctive names.
5029
5030         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
5031         member function to perform non-trivial assignment.
5032         (_Optional_payload_base::_M_move_assign): Likewise.
5033         (_Optional_payload<T, true, false, true>::operator=)
5034         (_Optional_payload<T, true, true, false>::operator=)
5035         (_Optional_payload<T, true, false, false>::operator=): Call
5036         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
5037
5038         PR libstdc++/88204
5039         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
5040         test std::complex<long double> if long double format is IBM128.
5041         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
5042         Likewise.
5043
5044 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5045
5046         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
5047         for old std::unique_ptr layout.
5048         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
5049         to become valueless. Add filesystem::path tests.
5050
5051         PR libstdc++/87855
5052         * include/std/optional (_Optional_payload_base): New class template
5053         for common code hoisted from _Optional_payload specializations. Use
5054         a template for the union, to allow a partial specialization for
5055         types with non-trivial destructors. Add constructors for in-place
5056         initialization to the union.
5057         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
5058         to perform non-trivial copy construction, instead of relying on
5059         non-standard copy elision in a delegating constructor.
5060         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
5061         non-trivial move construction.
5062         (_Optional_payload): Derive from _Optional_payload_base and use it
5063         for everything except the non-trivial assignment operators, which are
5064         defined as needed.
5065         (_Optional_payload<false, C, M>): Derive from the specialization
5066         _Optional_payload<true, false, false> and add a destructor.
5067         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
5068         Forward to corresponding members of _Optional_payload.
5069         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
5070         Hoist common members from _Optional_base.
5071         (_Optional_base): Make all members and base class public.
5072         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
5073         _Optional_base_impl.
5074         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
5075         support for new std::optional layout.
5076         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
5077
5078         PR libstdc++/88066
5079         * include/bits/locale_conv.h: Use <> for includes not "".
5080         * include/ext/random: Likewise.
5081         * include/ext/vstring.h: Likewise.
5082
5083 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5084
5085         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
5086         (GLIBCXX_3.4.21): Likewise.
5087
5088 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5089
5090         PR libstdc++/88749
5091         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
5092         to match the one that controls whether utimbuf and utime are declared.
5093
5094 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
5095
5096         PR libstdc++/87787
5097         * include/bits/char_traits.h (char_traits::move): Do not pass null
5098         pointers to memmove.
5099         * include/bits/locale_facets.h
5100         (ctype<char>::widen(const char*, const char*, char*)): Do not
5101         pass null pointers to memcpy.
5102         (ctype<char>::narrow(const char*, const char*, char, char*)):
5103         Likewise.
5104         (ctype<char>::do_widen(const char*, const char*, char*)):
5105         Likewise.
5106         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
5107         Likewise.
5108
5109         * doc/xml/manual/spine.xml: Update copyright years.
5110         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
5111         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
5112         for C++17 filesystem library.
5113         * doc/html/*: Regenerate.
5114
5115         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
5116         * config.h.in: Regenerate.
5117         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
5118         alphabetically and add missing entries for copy_symlink,
5119         hard_link_count, rename, and resize_file.
5120         * configure: Regenerate.
5121         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
5122         used unconditionally.
5123         * src/filesystem/ops-common.h (__gnu_posix::truncate)
5124         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
5125         supports truncating to zero length.
5126         * testsuite/27_io/filesystem/operations/all.cc: New test.
5127         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
5128
5129 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
5130
5131         PR libstdc++/86756
5132         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
5133         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
5134         * config.h.in: Regenerate.
5135         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
5136         remaining std::filesystem types and functions.
5137         * configure: Regenerate.
5138         * src/c++17/Makefile.am: Add C++17 filesystem sources.
5139         * src/c++17/Makefile.in: Regenerate.
5140         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
5141         here, and change name of included file.
5142         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
5143         here, and change name of included file.
5144         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
5145         path to dir-common.h.
5146         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
5147         path to ops-common.h. Disable -Wunused-parameter warnings.
5148         (internal_file_clock): Define unconditionally.
5149         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
5150         define.
5151         (do_copy_file, do_space): Move definitions to ops.common.h.
5152         (copy, file_size, hard_link_count, last_write_time, space): Only
5153         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
5154         report an error.
5155         (last_write_time, read_symlink): Remove unused attributes from
5156         parameters.
5157         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
5158         * src/filesystem/Makefile.in: Regenerate.
5159         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
5160         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
5161         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
5162         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
5163         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
5164         dummy types and functions instead of using #error.
5165         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
5166         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
5167         in terms of stat.
5168         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
5169         (do_copy_file, do_space): Move definitions here from std-ops.cc.
5170         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
5171         to account for new namespace.
5172         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
5173         -lstdc++fs from dg-options.
5174         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
5175         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
5176         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
5177         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
5178         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
5179         Likewise.
5180         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
5181         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5182         Likewise.
5183         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
5184         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
5185         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
5186         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
5187         * testsuite/27_io/filesystem/operations/create_directories.cc:
5188         Likewise.
5189         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
5190         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
5191         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
5192         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
5193         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
5194         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
5195         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5196         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
5197         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
5198         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
5199         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
5200         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
5201         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
5202         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
5203         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
5204         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
5205         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
5206         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
5207         Likewise.
5208         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
5209
5210
5211         PR libstdc++/86756
5212         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
5213         typeinfo and vtables less greedy.
5214         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
5215         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
5216         * src/c++17/Makefile.in: Regenerate.
5217         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
5218         here, and change name of included file.
5219         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
5220         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
5221         from sources.
5222         * src/filesystem/Makefile.in: Regenerate.
5223         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
5224         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
5225         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
5226         from dg-options and remove dg-require-filesystem-ts.
5227         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
5228         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
5229         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
5230         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
5231         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
5232         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
5233         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
5234         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
5235         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
5236         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
5237         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
5238         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
5239         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
5240         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
5241         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
5242         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
5243         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
5244         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
5245         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
5246         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
5247         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
5248         Likewise.
5249         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
5250         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
5251         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
5252         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
5253         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
5254         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
5255         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
5256         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
5257         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
5258         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
5259         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
5260         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
5261         Likewise.
5262         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
5263         Likewise.
5264         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5265         Likewise.
5266         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
5267         Likewise.
5268         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
5269         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
5270         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
5271         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
5272         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
5273         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
5274         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
5275         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
5276         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
5277         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
5278         Likewise.
5279         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
5280         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
5281         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
5282         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
5283         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
5284
5285         PR libstdc++/87431
5286         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
5287         Check is_trivially_copyable instead of is_scalar.
5288         (variant::emplace<N, Args>(Args&&...)): If construction of the new
5289         contained value can throw and its type is trivially copyable then
5290         construct into a temporary variant and move from it, to provide the
5291         strong exception safety guarantee.
5292         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
5293         Likewise.
5294         * testsuite/20_util/variant/87431.cc: New test.
5295         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
5296         conversion causes valueless state.
5297
5298         PR libstdc++/88607
5299         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
5300         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
5301         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
5302         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
5303         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
5304
5305 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
5306
5307         * include/bits/fs_fwd.h (__file_clock): Define new clock.
5308         (file_time_type): Redefine in terms of __file_clock.
5309         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
5310         overflow.
5311         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
5312         internal linkage.
5313         (internal_file_lock): New helper type for accessing __file_clock.
5314         (do_copy_file): Use internal_file_lock to convert system time to
5315         file_time_type.
5316         (last_write_time(const path&, error_code&)): Likewise.
5317         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
5318
5319 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
5320
5321         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
5322         for const member functions of std::basic_string.
5323         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
5324         in C++17.
5325         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
5326         Make non-standard constructor private.
5327         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
5328         Likewise.
5329         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
5330         explicit instantiations for C++17 as well as earlier dialects.
5331         * src/c++17/Makefile.am: Add new source files.
5332         * src/c++17/Makefile.in: Regenerate.
5333         * src/c++17/cow-string-inst.cc: New file defining explicit
5334         instantiations for basic_string member functions added in C++17.
5335         * src/c++17/string-inst.cc: Likewise.
5336
5337         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
5338         copy/move constructors for old std::basic_string.
5339         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
5340         (basic_string::reference, basic_string::const_reference): Define
5341         as plain references for C++11 and later.
5342         (basic_string::basic_string()): Put constructor body outside
5343         preprocessor conditional groups.
5344         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
5345         instead of copying it.
5346         (basic_string::basic_string(const basic_string&, const _Alloc&)):
5347         Define.
5348         (basic_string::basic_string(basic_string&&, const _Alloc&)):
5349         Define.
5350         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
5351         cases for old basic_string.
5352         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
5353         allocator-extended constructors unconditionally. Add extra members to
5354         allocator type when using old string ABI.
5355         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
5356         for old string ABI.
5357         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
5358
5359         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
5360         -fno-inline added to test flags.
5361
5362         * testsuite/21_strings/basic_string/requirements/
5363         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
5364
5365         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
5366         assertion failures with old std::string ABI.
5367
5368         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
5369         with ...
5370         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
5371         functions that will only erase elements at the end.
5372         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
5373         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
5374         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
5375         of erase(p, end()).
5376         (path::_List::pop_back()): Define.
5377         (path::_List::_M_erase_from(const_iterator)): Define.
5378         (path::operator/=(const path&)): Use pop_back to remove last component
5379         and _M_erase_from to remove multiple components.
5380         (path::_M_append(basic_string_view<value_type>)): Likewise.
5381         (path::operator+=(const path&)): Likewise.
5382         (path::_M_concat(basic_string_view<value_type>)): Likewise.
5383         (path::remove_filename()): Likewise.
5384         (path::lexically_normal()): Use _List::_Impl iterators instead of
5385         path::iterator. Use pop_back to remove components from the end. Clear
5386         trailing filename, instead of using erase(const_iterator) to remove
5387         a non-final component.
5388         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
5389         additional cases.
5390         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
5391
5392         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
5393         incorrect treatment of empty filename after trailing slash.
5394         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
5395
5396         * testsuite/21_strings/basic_string/modifiers/assign/char/
5397         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
5398         to test flags.
5399         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
5400         move_assign_optim.cc: Likewise.
5401
5402 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5403             Jakub Jelinek  <jakub@redhat.com>
5404
5405         PR libstdc++/88607
5406         * include/experimental/memory: Replace UTF-8 quote characters.
5407         * include/std/future: Replace UTF-8 "em dash" characters.
5408
5409 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5410
5411         PR libstdc++/88607
5412         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
5413         * include/debug/forward_list: Likewise.
5414         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
5415         character.
5416         * include/experimental/chrono: Likewise.
5417         * include/experimental/functional: Likewise.
5418         * include/experimental/ratio: Likewise.
5419         * include/experimental/system_error: Likewise.
5420         * include/experimental/tuple: Likewise.
5421         * include/experimental/type_traits: Likewise.
5422         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
5423         * include/parallel/multiseq_selection.h: Likewise.
5424
5425         PR libstdc++/88681
5426         * config/abi/pre/gnu.ver: Add missing exports.
5427         * testsuite/22_locale/collate_byname/88681.cc: New test.
5428         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
5429         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
5430
5431 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
5432
5433         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
5434         initializer_list<value_type> and from input iterator ranges.
5435         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
5436
5437         * testsuite/experimental/string_view/element_access/char/empty.cc:
5438         Fix year range in copyright header.
5439
5440 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
5441
5442         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
5443         Fix year range in copyright header.
5444
5445 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
5446
5447         Update copyright years.
5448 \f
5449 Copyright (C) 2019 Free Software Foundation, Inc.
5450
5451 Copying and distribution of this file, with or without modification,
5452 are permitted in any medium without royalty provided the copyright
5453 notice and this notice are preserved.