78739c2df7
Derived from the changes that added C++2a support in 2017. r8-3237-g026a79f70cf33f836ea5275eda72d4870a3041e5 No C++23 features are added here. Use of -std=c++23 sets __cplusplus to 202100L. $ g++ -std=c++23 -dM -E -x c++ - < /dev/null | grep cplusplus #define __cplusplus 202100L gcc/ * doc/cpp.texi (__cplusplus): Document value for -std=c++23 or -std=gnu++23. * doc/invoke.texi: Document -std=c++23 and -std=gnu++23. * dwarf2out.c (highest_c_language): Recognise C++20 and C++23. (gen_compile_unit_die): Recognise C++23. gcc/c-family/ * c-common.h (cxx_dialect): Add cxx23 as a dialect. * c.opt: Add options for -std=c++23, std=c++2b, -std=gnu++23 and -std=gnu++2b * c-opts.c (set_std_cxx23): New. (c_common_handle_option): Set options when -std=c++23 is enabled. (c_common_post_options): Adjust comments. (set_std_cxx20): Likewise. gcc/testsuite/ * lib/target-supports.exp (check_effective_target_c++2a): Check for C++2a or C++23. (check_effective_target_c++20_down): New. (check_effective_target_c++23_only): New. (check_effective_target_c++23): New. * g++.dg/cpp23/cplusplus.C: New. libcpp/ * include/cpplib.h (c_lang): Add CXX23 and GNUCXX23. * init.c (lang_defaults): Add rows for CXX23 and GNUCXX23. (cpp_init_builtins): Set __cplusplus to 202100L for C++23. |
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| .. | ||
| cpplib.h | ||
| line-map.h | ||
| mkdeps.h | ||
| symtab.h | ||