mirror of
git://gcc.gnu.org/git/gcc.git
synced 2025-02-27 00:16:21 +08:00
5388a43f6a
It seems prudent to add C++26 now that the first C++26 papers have been
approved. I followed commit r11-6920 as well as r8-3237.
Since C++23 is essentially finished and its __cplusplus value has
settled to 202302L, I've updated cpp_init_builtins and marked
-std=c++2b Undocumented and made -std=c++23 no longer Undocumented.
As for __cplusplus, I've chosen 202400L:
$ xg++ -std=c++26 -dM -E -x c++ - < /dev/null | grep cplusplus
#define __cplusplus 202400L
I've verified the patch with a simple test, exercising the new
directives. Don't forget to update your GXX_TESTSUITE_STDS!
This patch does not add -Wc++26-extensions.
gcc/c-family/ChangeLog:
* c-common.h (cxx_dialect): Add cxx26 as a dialect.
* c-opts.cc (set_std_cxx26): New.
(c_common_handle_option): Set options when -std={c,gnu}++2{c,6} is
enabled.
(c_common_post_options): Adjust comments.
* c.opt: Add options for -std=c++26, std=c++2c, -std=gnu++26,
and -std=gnu++2c.
(std=c++2b): Mark as Undocumented.
(std=c++23): No longer Undocumented.
gcc/ChangeLog:
* doc/cpp.texi (__cplusplus): Document value for -std=c++26 and
-std=gnu++26. Document that for C++23, its value is 202302L.
* doc/invoke.texi: Document -std=c++26 and -std=gnu++26.
* dwarf2out.cc (highest_c_language): Handle GNU C++26.
(gen_compile_unit_die): Likewise.
libcpp/ChangeLog:
* include/cpplib.h (c_lang): Add CXX26 and GNUCXX26.
* init.cc (lang_defaults): Add rows for CXX26 and GNUCXX26.
(cpp_init_builtins): Set __cplusplus to 202400L for C++26.
Set __cplusplus to 202302L for C++23.
gcc/testsuite/ChangeLog:
* lib/target-supports.exp (check_effective_target_c++23): Return
1 also if check_effective_target_c++26.
(check_effective_target_c++23_down): New.
(check_effective_target_c++26_only): New.
(check_effective_target_c++26): New.
* g++.dg/cpp23/cplusplus.C: Adjust expected value.
* g++.dg/cpp26/cplusplus.C: New test.
|
||
|---|---|---|
| .. | ||
| include | ||
| po | ||
| aclocal.m4 | ||
| ChangeLog | ||
| ChangeLog.jit | ||
| charset.cc | ||
| combining-chars.inc | ||
| config.in | ||
| configure | ||
| configure.ac | ||
| directives.cc | ||
| errors.cc | ||
| expr.cc | ||
| files.cc | ||
| generated_cpp_wcwidth.h | ||
| identifiers.cc | ||
| init.cc | ||
| internal.h | ||
| lex.cc | ||
| line-map.cc | ||
| location-example.txt | ||
| macro.cc | ||
| Makefile.in | ||
| makeucnid.cc | ||
| makeuname2c.cc | ||
| mkdeps.cc | ||
| pch.cc | ||
| printable-chars.inc | ||
| symtab.cc | ||
| system.h | ||
| traditional.cc | ||
| ucnid.h | ||
| ucnid.tab | ||
| uname2c.h | ||