+2023-11-13 Arsen Arsenović <arsen@aarsen.me>
+
+ * configure: Regenerate.
+
+2023-11-13 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/std/time/clock/file/io.cc: Double timeout using
+ dg-timeout-factor.
+ * testsuite/std/time/clock/gps/io.cc: Likewise.
+ * testsuite/std/time/clock/local/io.cc: Likewise.
+ * testsuite/std/time/clock/system/io.cc: Likewise.
+ * testsuite/std/time/clock/tai/io.cc: Likewise.
+ * testsuite/std/time/clock/utc/io.cc: Likewise.
+
+2023-11-13 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/112480
+ * include/std/optional (_Optional_payload_base::_M_reset): Set
+ _M_engaged to false unconditionally.
+
+2023-11-11 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/112467
+ * include/bits/stl_bvector.h (_M_assume_normalized): Do not use
+ statement form of assume attribute for Clang.
+
+2023-11-11 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/string_view (operator==, operator<=>): Remove
+ redundant overloads (LWG 3950).
+
+2023-11-11 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/26_numerics/headers/complex.h/std_c++11.h: Moved to...
+ * testsuite/26_numerics/headers/complex.h/std_c++11.cc: ...here.
+ * testsuite/26_numerics/headers/complex.h/std_c++98.h: Moved to...
+ * testsuite/26_numerics/headers/complex.h/std_c++98.cc: ...here.
+ Check macro first and then #undef.
+ * testsuite/26_numerics/headers/complex.h/std_gnu++11.h: Moved to...
+ * testsuite/26_numerics/headers/complex.h/std_gnu++11.cc: ...here.
+
+2023-11-11 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/112473
+ * include/bits/utility.h (integer_sequence): Add static_assert.
+ * testsuite/20_util/integer_sequence/112473.cc: New test.
+
+2023-11-11 Jonathan Wakely <jwakely@redhat.com>
+
+ * testsuite/20_util/pair/dangling_ref.cc: Add hosted effective
+ target for specifiers using c++17_down.
+
+2023-11-11 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/shared_ptr_atomic.h (atomic_is_lock_free)
+ (atomic_load_explicit, atomic_load, atomic_store_explicit)
+ (atomic_store, atomic_exchange_explicit, atomic_exchange)
+ (atomic_compare_exchange_strong, atomic_compare_exchange_weak)
+ (atomic_compare_exchange_strong_explicit)
+ (atomic_compare_exchange_weak_explicit): Add deprecated
+ attribute for C++20 and later.
+ * testsuite/20_util/shared_ptr/atomic/1.cc: Suppress deprecated
+ warnings.
+ * testsuite/20_util/shared_ptr/atomic/2.cc: Likewise.
+ * testsuite/20_util/shared_ptr/atomic/3.cc: Likewise.
+ * testsuite/29_atomics/atomic/lwg3220.cc: Likewise.
+
+2023-11-11 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/bits/std_mutex.h (lock_guard): Add [[nodiscard]]
+ attribute to constructors.
+ * include/bits/unique_lock.h (unique_lock): Likewise.
+ * include/std/mutex (scoped_lock, scoped_lock<Mutex>): Likewise.
+ * testsuite/30_threads/lock_guard/cons/nodiscard.cc: New test.
+ * testsuite/30_threads/scoped_lock/cons/nodiscard.cc: New test.
+ * testsuite/30_threads/unique_lock/cons/nodiscard.cc: New test.
+
+2023-11-11 Jonathan Wakely <jwakely@redhat.com>
+
+ * include/std/span (span, as_bytes, as_writable_bytes): Add
+ [[nodiscard]] attribute on all non-void functions.
+ * testsuite/23_containers/span/back_assert_neg.cc: Suppress
+ nodiscard warning.
+ * testsuite/23_containers/span/back_neg.cc: Likewise.
+ * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise.
+ * testsuite/23_containers/span/first_assert_neg.cc: Likewise.
+ * testsuite/23_containers/span/first_neg.cc: Likewise.
+ * testsuite/23_containers/span/front_assert_neg.cc: Likewise.
+ * testsuite/23_containers/span/front_neg.cc: Likewise.
+ * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise.
+ * testsuite/23_containers/span/index_op_neg.cc: Likewise.
+ * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise.
+ * testsuite/23_containers/span/last_assert_neg.cc: Likewise.
+ * testsuite/23_containers/span/last_neg.cc: Likewise.
+ * testsuite/23_containers/span/subspan_2_assert_neg.cc:
+ Likewise.
+ * testsuite/23_containers/span/subspan_3_assert_neg.cc:
+ Likewise.
+ * testsuite/23_containers/span/subspan_4_assert_neg.cc:
+ Likewise.
+ * testsuite/23_containers/span/subspan_5_assert_neg.cc:
+ Likewise.
+ * testsuite/23_containers/span/subspan_6_assert_neg.cc:
+ Likewise.
+ * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise.
+ * testsuite/23_containers/span/subspan_neg.cc: Likewise.
+ * testsuite/23_containers/span/nodiscard.cc: New test.
+
+2023-11-11 Jonathan Wakely <jwakely@redhat.com>
+
+ PR libstdc++/111638
+ * config.h.in: Regenerate.
+ * configure: Regenerate.
+ * linkage.m4 (GLIBCXX_MAYBE_UNDERSCORED_FUNCS): Remove.
+ (GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_1): Do not check for _foo.
+ (GLIBCXX_CHECK_MATH_DECLS_AND_LINKAGES_1): Likewise.
+ (GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_2): Likewise.
+ (GLIBCXX_CHECK_MATH_DECL_AND_LINKAGE_3): Likewise.
+ (GLIBCXX_CHECK_STDLIB_DECL_AND_LINKAGE_2): Do not use
+ GLIBCXX_MAYBE_UNDERSCORED_FUNCS.
+
+2023-11-11 Nathaniel Shead <nathanieloshead@gmail.com>
+
+ PR libstdc++/79700
+ * include/c_global/cmath (acosf, acosl, asinf, asinl, atanf)
+ (atanl, atan2f, atan2l, ceilf, ceill, cosf, cosl, coshf, coshl)
+ (expf, expl, fabsf, fabsl, floorf, floorl, fmodf, fmodl, frexpf)
+ (frexpl, ldexpf, ldexpl, logf, logl, log10f, log10l, modff)
+ (modfl, powf, powl, sinf, sinl, sinhf, sinhl, sqrtf, sqrtl, tanf)
+ (tanl, tanhf, tanhl): Add using-declarations in namespace std.
+ * testsuite/26_numerics/headers/cmath/equivalent_functions.cc:
+ New test.
+ * testsuite/26_numerics/headers/cmath/functions_std_c++17.cc:
+ Add checks for existence of above names.
+
+2023-11-09 Arsen Arsenović <arsen@aarsen.me>
+
+ * testsuite/20_util/scoped_allocator/noexcept.cc: Mark as
+ requiring hosted.
+
+2023-11-09 Arsen Arsenović <arsen@aarsen.me>
+
+ * include/bits/memoryfwd.h: Remove HOSTED check around allocator
+ and its specializations.
+
+2023-11-09 Patrick Palka <ppalka@redhat.com>
+
+ PR libstdc++/112453
+ * include/std/ranges (__detail::__box<_Tp>::operator*): Define
+ && overloads as well.
+ (__detail::__take_of_repeat_view): Forward __r when accessing
+ its _M_value member.
+ (__detail::__drop_of_repeat_view): Likewise.
+ * testsuite/std/ranges/repeat/1.cc (test07): New test.
+
+2023-11-09 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/bits/hashtable_policy.h (_RehashStateGuard): New.
+ (_Insert_base<>::_M_insert_range(_IIt, _IIt, const _NodeGet&, false_type)):
+ Adapt.
+ * include/bits/hashtable.h (__rehash_guard_t): New.
+ (__rehash_state): Remove.
+ (_M_rehash): Remove.
+ (_M_rehash_aux): Rename into _M_rehash.
+ (_M_assign_elements, _M_insert_unique_node, _M_insert_multi_node): Adapt.
+ (rehash): Adapt.
+
+2023-11-09 François Dumont <fdumont@gcc.gnu.org>
+
+ * include/bits/hashtable_policy.h
+ (struct _NodePtrGuard<_HashtableAlloc, _NodePtr>): New.
+ (_ReuseAllocNode::operator()(_Args&&...)): Use latter to guard allocated node
+ pointer while constructing in place the value_type instance.
+
+2023-11-09 Alexandre Oliva <oliva@adacore.com>
+
+ PR libstdc++/110807
+ * include/bits/stl_bvector.h (_Bit_iterator_base): Add
+ _M_assume_normalized member function. Call it in _M_bump_up,
+ _M_bump_down, _M_incr, operator==, operator<=>, operator<, and
+ operator-.
+ (_Bit_iterator): Also call it in operator*.
+ (_Bit_const_iterator): Likewise.
+
2023-11-07 François Dumont <fdumont@gcc.gnu.org>
* include/bits/hashtable_policy.h
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