+2022-10-12 Lewis Hyatt <lhyatt@gmail.com>
+
+ PR preprocessor/60014
+ PR preprocessor/60723
+ * c-ppoutput.cc (class token_streamer): Remove member
+ line_marker_emitted to...
+ (token_streamer::stream): ...a local variable here. Set
+ print.prev_was_system_token on all code paths.
+
+2022-10-10 Nathan Sidwell <nathan@acm.org>
+
+ * c-opts.cc (c_common_post_options): Bump abi to 18.
+
+2022-10-10 Marek Polacek <polacek@redhat.com>
+
+ PR c++/106937
+ * c-pretty-print.cc (pp_c_specifier_qualifier_list): Print only GNU
+ attributes here.
+ (c_pretty_printer::direct_abstract_declarator): Print the standard [[]]
+ attributes here.
+ (pp_c_attributes): Remove.
+ (pp_c_attributes_display): Print the [[]] form if appropriate. Use
+ get_attribute_name. Don't print a trailing space when printing the
+ [[]] form.
+ * c-pretty-print.h (pp_c_attributes): Remove.
+
+2022-10-07 Qing Zhao <qing.zhao@oracle.com>
+
+ * c-attribs.cc (handle_strict_flex_array_attribute): New function.
+ (c_common_attribute_table): New item for strict_flex_array.
+ * c.opt: (fstrict-flex-arrays): New option.
+ (fstrict-flex-arrays=): New option.
+
+2022-10-07 Martin Liska <mliska@suse.cz>
+
+ * name-hint.h: Use std::move.
+
+2022-10-07 Jakub Jelinek <jakub@redhat.com>
+
+ * c-common.cc (attribute_fallthrough_p): Lookup fallthrough attribute
+ only in gnu namespace or as standard attribute, treat fallthrough
+ attributes in other namespaces like any other unknown attribute.
+
+2022-10-06 Joseph Myers <joseph@codesourcery.com>
+
+ * c-common.cc (c_common_reswords): Mark typeof as D_EXT11. Add
+ typeof_unqual.
+ * c-common.h (enum rid): Add RID_TYPEOF_UNQUAL.
+ (D_EXT11): New macro. Values of subsequent macros updated.
+
+2022-10-06 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/106654
+ * c-attribs.cc (handle_assume_attribute): New function.
+ (c_common_attribute_table): Add entry for assume attribute.
+ * c-lex.cc (c_common_has_attribute): Handle
+ __have_cpp_attribute (assume).
+
+2022-10-04 Jakub Jelinek <jakub@redhat.com>
+
+ * c-omp.cc (c_omp_directives): Uncomment begin declare target
+ entry.
+
+2022-10-03 Patrick Palka <ppalka@redhat.com>
+
+ * c-common.cc (c_common_reswords): Use RID_IS_SAME instead of
+ RID_IS_SAME_AS.
+
+2022-10-03 Joseph Myers <joseph@codesourcery.com>
+
+ * c-cppbuiltin.cc (builtin_define_float_constants): Do not
+ special-case __*_EPSILON__ setting for IBM long double for C2x.
+
+2022-09-30 Patrick Palka <ppalka@redhat.com>
+
+ * c-common.cc (c_common_reswords): Use cp/cp-trait.def to handle
+ C++ traits.
+ * c-common.h (enum rid): Likewise.
+
+2022-09-29 Joseph Myers <joseph@codesourcery.com>
+
+ * c-lex.cc (c_common_has_attribute): Handle noreturn attribute for
+ C.
+
+2022-09-29 Patrick Palka <ppalka@redhat.com>
+
+ * c-common.cc (c_common_reswords): Add __remove_cv,
+ __remove_reference and __remove_cvref.
+ * c-common.h (enum rid): Add RID_REMOVE_CV, RID_REMOVE_REFERENCE
+ and RID_REMOVE_CVREF.
+
+2022-09-27 Marek Polacek <polacek@redhat.com>
+
+ PR c++/101165
+ PR c++/106882
+ * c-cppbuiltin.cc (c_cpp_builtins): Define __cpp_implicit_move.
+
+2022-09-27 Marek Polacek <polacek@redhat.com>
+
+ * c-format.cc (c_keywords): Drop nothrow.
+
+2022-09-27 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/106651
+ * c-cppbuiltin.cc (c_cpp_builtins): Predefine
+ __cpp_static_call_operator=202207L for C++23.
+
+2022-09-27 Jakub Jelinek <jakub@redhat.com>
+
+ * c-pragma.h (enum pragma_kind): Add PRAGMA_OMP_ASSUME,
+ PRAGMA_OMP_ASSUMES and PRAGMA_OMP_BEGIN. Rename
+ PRAGMA_OMP_END_DECLARE_TARGET to PRAGMA_OMP_END.
+ * c-pragma.cc (omp_pragmas): Add assumes and begin.
+ For end rename PRAGMA_OMP_END_DECLARE_TARGET to PRAGMA_OMP_END.
+ (omp_pragmas_simd): Add assume.
+ * c-common.h (c_omp_directives): Declare.
+ * c-omp.cc (omp_directives): Rename to ...
+ (c_omp_directives): ... this. No longer static. Uncomment
+ assume, assumes, begin assumes and end assumes entries.
+ In end declare target entry rename PRAGMA_OMP_END_DECLARE_TARGET
+ to PRAGMA_OMP_END.
+ (c_omp_categorize_directive): Adjust for omp_directives to
+ c_omp_directives renaming.
+
+2022-09-27 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/106652
+ PR c++/85518
+ * c-common.cc (c_common_reswords): Change _Float{16,32,64,128} and
+ _Float{32,64,128}x flags from D_CONLY to 0.
+ (shorten_binary_op): Punt if common_type returns error_mark_node.
+ (shorten_compare): Likewise.
+ (c_common_nodes_and_builtins): For C++ record _Float{16,32,64,128}
+ and _Float{32,64,128}x builtin types if available. For C++
+ clear float128t_type_node.
+ * c-cppbuiltin.cc (c_cpp_builtins): Predefine
+ __STDCPP_FLOAT{16,32,64,128}_T__ for C++23 if supported.
+ * c-lex.cc (interpret_float): For q/Q suffixes prefer
+ float128t_type_node over float128_type_node. Allow
+ {f,F}{16,32,64,128} suffixes for C++ if supported with pedwarn
+ for C++20 and older. Allow {f,F}{32,64,128}x suffixes for C++
+ with pedwarn. Don't call excess_precision_type for C++.
+
+2022-09-26 Marek Polacek <polacek@redhat.com>
+
+ PR c++/106656
+ * c-cppbuiltin.cc (c_cpp_builtins): Update value of __cpp_char8_t
+ for C++20.
+
+2022-09-23 Marek Polacek <polacek@redhat.com>
+
+ PR c++/106784
+ * c-common.cc (c_common_reswords): Add __is_convertible and
+ __is_nothrow_convertible.
+ * c-common.h (enum rid): Add RID_IS_CONVERTIBLE and
+ RID_IS_NOTHROW_CONVERTIBLE.
+
+2022-09-22 David Malcolm <dmalcolm@redhat.com>
+
+ PR c/106830
+ * c-warn.cc (check_for_xor_used_as_pow): Don't try checking
+ values that don't fit in uhwi.
+
+2022-09-15 Richard Biener <rguenther@suse.de>
+
+ * c-common.h (build_void_list_node): Remove.
+ * c-common.cc (c_common_nodes_and_builtins): Do not initialize
+ void_list_node.
+
+2022-09-09 Jan-Benedict Glaw <jbglaw@lug-owl.de>
+
+ * c-format.cc (convert_format_name_to_system_name): Fix warning.
+
+2022-09-07 Joseph Myers <joseph@codesourcery.com>
+
+ * c-common.cc (c_common_reswords): Use D_C2X instead of D_CXXONLY
+ for alignas, alignof, bool, false, static_assert, thread_local and
+ true.
+
+2022-09-07 Jakub Jelinek <jakub@redhat.com>
+
+ * c.opt (Winvalid-utf8): Use ObjC instead of objC. Remove
+ " in comments" from description.
+ (Wunicode): New option.
+
+2022-09-06 Jakub Jelinek <jakub@redhat.com>
+
+ PR c/106836
+ * c-omp.cc (c_omp_split_clauses): Handle OMP_CLAUSE_DOACROSS.
+
+2022-09-03 Jakub Jelinek <jakub@redhat.com>
+
+ * c-pragma.h (enum pragma_omp_clause): Add PRAGMA_OMP_CLAUSE_DOACROSS.
+ * c-omp.cc (c_finish_omp_depobj): Check also for OMP_CLAUSE_DOACROSS
+ clause and diagnose it. Don't handle OMP_CLAUSE_DEPEND_SOURCE and
+ OMP_CLAUSE_DEPEND_SINK. Assert kind is not OMP_CLAUSE_DEPEND_INVALID.
+
+2022-09-02 David Malcolm <dmalcolm@redhat.com>
+
+ PR c/90885
+ * c-common.h (check_for_xor_used_as_pow): New decl.
+ * c-lex.cc (c_lex_with_flags): Add DECIMAL_INT to flags as appropriate.
+ * c-warn.cc (check_for_xor_used_as_pow): New.
+ * c.opt (Wxor-used-as-pow): New.
+
+2022-09-01 Jason Merrill <jason@redhat.com>
+
+ * c-common.cc (c_common_nodes_and_builtins): Set TREE_STRING_FLAG on
+ char8_t.
+ (braced_list_to_string): Check for char-sized elements.
+
+2022-09-01 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/106655
+ * c.opt (-Winvalid-utf8): New warning.
+ * c-opts.cc (c_common_handle_option) <case OPT_finput_charset_>:
+ Set cpp_opts->cpp_input_charset_explicit.
+ (c_common_post_options): If -finput-charset=UTF-8 is explicit
+ in C++23, enable -Winvalid-utf8 by default and if -pedantic
+ or -pedantic-errors, make it a pedwarn.
+
+2022-08-31 Joseph Myers <joseph@codesourcery.com>
+
+ * c-attribs.cc (handle_deprecated_attribute): Check and pedwarn
+ for LABEL_DECL.
+ * c-common.cc (c_add_case_label): Add argument ATTRS. Call
+ decl_attributes.
+ * c-common.h (do_case, c_add_case_label): Update declarations.
+ * c-lex.cc (c_common_has_attribute): For C, produce a result of
+ 201910 for fallthrough and 202106 for maybe_unused.
+
+2022-08-26 Marek Polacek <polacek@redhat.com>
+
+ PR c++/81159
+ * c.opt (Wself-move): New option.
+
+2022-08-26 Jakub Jelinek <jakub@redhat.com>
+
+ * c-common.cc (check_builtin_function_arguments): Handle
+ BUILT_IN_ISSIGNALING.
+
+2022-08-26 Jakub Jelinek <jakub@redhat.com>
+
+ PR c++/106648
+ * c-cppbuiltin.cc (c_cpp_builtins): Predefine
+ __cpp_named_character_escapes to 202207L.
+
+2022-08-25 Marek Polacek <polacek@redhat.com>
+
+ * c-common.cc (c_common_reswords): Enable nullptr in C2X.
+ (c_common_nodes_and_builtins): Create the built-in node for nullptr.
+ * c-common.h (enum c_tree_index): Add CTI_NULLPTR, CTI_NULLPTR_TYPE.
+ (struct c_common_resword): Resize the disable member.
+ (D_C2X): Add.
+ (nullptr_node): Define.
+ (nullptr_type_node): Define.
+ (NULLPTR_TYPE_P): Define.
+ * c-pretty-print.cc (c_pretty_printer::simple_type_specifier): Handle
+ NULLPTR_TYPE.
+ (c_pretty_printer::direct_abstract_declarator): Likewise.
+ (c_pretty_printer::constant): Likewise.
+
+2022-08-16 Tom Honermann <tom@honermann.net>
+
+ PR c++/106423
+ * c-opts.cc (c_common_post_options): Disable -Wc++20-compat
+ diagnostics in C++20 and later.
+ * c.opt (Wc++20-compat): Enable hooks for the preprocessor.
+
+2022-08-11 Marek Polacek <polacek@redhat.com>
+
+ PR middle-end/102633
+ * c-gimplify.cc (c_gimplify_expr) <case DECL_EXPR>: Don't call
+ suppress_warning here.
+
+2022-08-08 Tom Honermann <tom@honermann.net>
+
+ PR preprocessor/106426
+ * c-opts.cc (c_common_post_options): Assign cpp_opts->unsigned_utf8char
+ subject to -fchar8_t, -fsigned-char, and/or -funsigned-char.
+
+2022-08-08 Tom Honermann <tom@honermann.net>
+
+ * c-lex.cc (lex_string, lex_charconst): Use char8_t as the type
+ of CPP_UTF8CHAR and CPP_UTF8STRING when char8_t support is
+ enabled.
+ * c-opts.cc (c_common_post_options): Set flag_char8_t if
+ targeting C2x.
+
+2022-07-31 Lewis Hyatt <lhyatt@gmail.com>
+
+ PR c++/66290
+ * c-common.h: Rename global done_lexing to
+ override_libcpp_locations.
+ * c-common.cc (c_cpp_diagnostic): Likewise.
+ * c-opts.cc (c_common_finish): Set override_libcpp_locations
+ (formerly done_lexing) immediately prior to calling cpp_finish ().
+
+2022-07-27 Lewis Hyatt <lhyatt@gmail.com>
+
+ * c-ppoutput.cc (token_streamer::stream): Update input_location
+ prior to streaming each token.
+
+2022-07-23 Immad Mir <mirimmad@outlook.com>
+
+ * c-attribs.cc: (c_common_attribute_table): add three new attributes
+ namely: fd_arg, fd_arg_read and fd_arg_write.
+ (handle_fd_arg_attribute): New.
+
+2022-07-15 Marek Polacek <polacek@redhat.com>
+
+ PR c++/104477
+ * c-common.cc (c_common_reswords): Add
+ __reference_constructs_from_temporary and
+ __reference_converts_from_temporary.
+ * c-common.h (enum rid): Add RID_REF_CONSTRUCTS_FROM_TEMPORARY and
+ RID_REF_CONVERTS_FROM_TEMPORARY.
+
+2022-07-15 Jonathan Wakely <jwakely@redhat.com>
+
+ * c-format.cc (class range_label_for_format_type_mismatch):
+ Adjust to new label_text API.
+
+2022-07-11 Lewis Hyatt <lhyatt@gmail.com>
+
+ PR preprocessor/106252
+ * c-pragma.cc (handle_pragma_diagnostic_impl): Don't look up the
+ option argument prior to verifying the option was found.
+
+2022-07-07 David Malcolm <dmalcolm@redhat.com>
+
+ * c-format.cc (range_label_for_format_type_mismatch::get_text):
+ Update for removal of label_text::maybe_free in favor of automatic
+ memory management.
+
+2022-07-06 Lewis Hyatt <lhyatt@gmail.com>
+
+ PR preprocessor/53920
+ PR c++/53431
+ * c-common.cc (c_option_is_from_cpp_diagnostics): New function.
+ * c-common.h (c_option_is_from_cpp_diagnostics): Declare.
+ (c_pp_stream_token): Declare.
+ * c-ppoutput.cc (init_pp_output): Refactor logic about skipping
+ pragmas to...
+ (should_output_pragmas): ...here. New function.
+ (token_streamer::stream): Support handling early pragmas.
+ (do_line_change): Likewise.
+ (c_pp_stream_token): New function.
+ * c-pragma.cc (struct pragma_diagnostic_data): New helper class.
+ (pragma_diagnostic_lex_normal): New function. Moved logic for
+ interpreting GCC diagnostic pragmas here.
+ (pragma_diagnostic_lex_pp): New function for parsing diagnostic pragmas
+ directly from libcpp.
+ (handle_pragma_diagnostic): Refactor into helper function...
+ (handle_pragma_diagnostic_impl): ...here. New function.
+ (handle_pragma_diagnostic_early): New function.
+ (handle_pragma_diagnostic_early_pp): New function.
+ (struct pragma_ns_name): Renamed to...
+ (struct pragma_pp_data): ...this. Add new "early_handler" member.
+ (c_register_pragma_1): Support early pragmas in the preprocessor.
+ (c_register_pragma_with_early_handler): New function.
+ (c_register_pragma): Support the new early handlers in struct
+ internal_pragma_handler.
+ (c_register_pragma_with_data): Likewise.
+ (c_register_pragma_with_expansion): Likewise.
+ (c_register_pragma_with_expansion_and_data): Likewise.
+ (c_invoke_early_pragma_handler): New function.
+ (c_pp_invoke_early_pragma_handler): New function.
+ (init_pragma): Add early pragma support for diagnostic pragmas.
+ * c-pragma.h (struct internal_pragma_handler): Add new early handler
+ members.
+ (c_register_pragma_with_early_handler): Declare.
+ (c_invoke_early_pragma_handler): Declare.
+ (c_pp_invoke_early_pragma_handler): Declare.
+
+2022-07-05 Marek Polacek <polacek@redhat.com>
+
+ PR c++/105626
+ * c-format.cc (check_format_arg): Don't emit -Wformat warnings with
+ u8 strings.
+
+2022-07-01 Marek Polacek <polacek@redhat.com>
+
+ PR c++/106111
+ * c-common.h (enum rid): Update RID_LAST_CXX20.
+
+2022-06-30 Jonathan Wakely <jwakely@redhat.com>
+
+ * known-headers.cc (get_stdlib_header_for_name): Add <time.h>
+ names.
+
+2022-06-24 Jason Merrill <jason@redhat.com>
+
+ PR c++/87729
+ PR c++/20423
+ * c.opt (Woverloaded-virtual): Add levels, include in -Wall.
+
+2022-06-18 Jakub Jelinek <jakub@redhat.com>
+
+ * c-ubsan.cc (ubsan_instrument_division, ubsan_instrument_shift):
+ Use flag_sanitize_trap & SANITIZE_??? instead of
+ flag_sanitize_undefined_trap_on_error. If 2 sanitizers are involved
+ and flag_sanitize_trap differs for them, emit __builtin_trap only
+ for the comparison where trap is requested.
+ (ubsan_instrument_vla, ubsan_instrument_return): Use
+ lag_sanitize_trap & SANITIZE_??? instead of
+ flag_sanitize_undefined_trap_on_error.
+
+2022-06-13 Jason Merrill <jason@redhat.com>
+
+ * c-ubsan.cc (ubsan_instrument_return): Use BUILTINS_LOCATION.
+
+2022-05-27 Marek Polacek <polacek@redhat.com>
+
+ PR c/90658
+ * c-attribs.cc (get_priority): Check FUNCTION_DECL.
+
+2022-05-27 Jakub Jelinek <jakub@redhat.com>
+
+ * c-pragma.h (enum pragma_omp_clause): Add PRAGMA_OMP_CLAUSE_ENTER.
+
+2022-05-20 David Malcolm <dmalcolm@redhat.com>
+
+ * c-format.cc: Replace uses of "FINAL" and "OVERRIDE" with "final"
+ and "override".
+ * c-pretty-print.h: Likewise.
+
+2022-05-18 Marek Polacek <polacek@redhat.com>
+
+ PR c/105131
+ * c.opt (Wenum-int-mismatch): New.
+
+2022-05-18 Marek Polacek <polacek@redhat.com>
+
+ PR c++/105497
+ * c-warn.cc (c_do_switch_warnings): Don't warn about unhandled
+ enumerator when it was marked with attribute unused.
+
+2022-05-18 Eric Botcazou <ebotcazou@adacore.com>
+
+ * c-ada-spec.cc (dump_ada_node) <COMPLEX_TYPE>: Deal with usual
+ floating-point complex types.
+ <POINTER_TYPE>: Do not use limited_with clause if the designated
+ type is a scalar type.
+
+2022-05-17 Jakub Jelinek <jakub@redhat.com>
+
+ * c-omp.cc (c_finish_omp_depobj): Handle
+ OMP_CLAUSE_DEPEND_INOUTSET.
+
+2022-05-16 Jason Merrill <jason@redhat.com>
+
+ PR c/105492
+ * c-attribs.cc (handle_mode_attribute): Don't fix broken typedefs
+ here.
+
+2022-05-16 Martin Liska <mliska@suse.cz>
+
+ * c-common.cc (ARRAY_SIZE): Use ARRAY_SIZE.
+ (c_common_nodes_and_builtins): Likewise.
+ * c-format.cc (check_tokens): Likewise.
+ (check_plain): Likewise.
+ * c-pragma.cc (c_pp_lookup_pragma): Likewise.
+ (init_pragma): Likewise.
+ * known-headers.cc (get_string_macro_hint): Likewise.
+ (get_stdlib_header_for_name): Likewise.
+ * c-attribs.cc: Likewise.
+
+2022-05-13 Richard Biener <rguenther@suse.de>
+
+ * c-omp.cc: Remove gimple-fold.h include.
+
2022-05-12 Jakub Jelinek <jakub@redhat.com>
* c-common.h (enum rid): Add RID_OMP_ALL_MEMORY.
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