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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INSTALL | ||
c++tools | ||
config | ||
contrib | ||
fixincludes | ||
gcc | ||
gnattools | ||
gotools | ||
include | ||
intl | ||
libada | ||
libatomic | ||
libbacktrace | ||
libcc1 | ||
libcody | ||
libcpp | ||
libdecnumber | ||
libffi | ||
libgcc | ||
libgfortran | ||
libgo | ||
libgomp | ||
libhsail-rt | ||
libiberty | ||
libitm | ||
libobjc | ||
liboffloadmic | ||
libphobos | ||
libquadmath | ||
libsanitizer | ||
libssp | ||
libstdc++-v3 | ||
libvtv | ||
lto-plugin | ||
maintainer-scripts | ||
zlib | ||
.dir-locals.el | ||
.gitattributes | ||
.gitignore | ||
ABOUT-NLS | ||
COPYING | ||
COPYING.LIB | ||
COPYING.RUNTIME | ||
COPYING3 | ||
COPYING3.LIB | ||
ChangeLog | ||
ChangeLog.jit | ||
ChangeLog.tree-ssa | ||
MAINTAINERS | ||
Makefile.def | ||
Makefile.in | ||
Makefile.tpl | ||
README | ||
ar-lib | ||
compile | ||
config-ml.in | ||
config.guess | ||
config.rpath | ||
config.sub | ||
configure | ||
configure.ac | ||
depcomp | ||
install-sh | ||
libtool-ldflags | ||
libtool.m4 | ||
ltgcc.m4 | ||
ltmain.sh | ||
ltoptions.m4 | ||
ltsugar.m4 | ||
ltversion.m4 | ||
lt~obsolete.m4 | ||
missing | ||
mkdep | ||
mkinstalldirs | ||
move-if-change | ||
multilib.am | ||
symlink-tree | ||
test-driver | ||
ylwrap |
README
This directory contains the GNU Compiler Collection (GCC). The GNU Compiler Collection is free software. See the files whose names start with COPYING for copying permission. The manuals, and some of the runtime libraries, are under different terms; see the individual source files for details. The directory INSTALL contains copies of the installation information as HTML and plain text. The source of this information is gcc/doc/install.texi. The installation information includes details of what is included in the GCC sources and what files GCC installs. See the file gcc/doc/gcc.texi (together with other files that it includes) for usage and porting information. An online readable version of the manual is in the files gcc/doc/gcc.info*. See http://gcc.gnu.org/bugs/ for how to report bugs usefully. Copyright years on GCC source files may be listed using range notation, e.g., 1987-2012, indicating that every year in the range, inclusive, is a copyrightable year that could otherwise be listed individually.