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| author | Andrew Sutton <andrew.n.sutton@gmail.com> | 2017-09-15 21:16:37 +0000 |
|---|---|---|
| committer | Jakub Jelinek <jakub@gcc.gnu.org> | 2017-09-15 23:16:37 +0200 |
| commit | 026a79f70cf33f836ea5275eda72d4870a3041e5 (patch) | |
| tree | 2f390353edc0761950168ed8a79be2315be52ac6 /gcc/doc | |
| parent | 41dfa93fb8d0cfd3a64ba3e6eba9fbbe1d66090c (diff) | |
| download | gcc-026a79f70cf33f836ea5275eda72d4870a3041e5.zip gcc-026a79f70cf33f836ea5275eda72d4870a3041e5.tar.gz gcc-026a79f70cf33f836ea5275eda72d4870a3041e5.tar.bz2 | |
Add support for -std=c++2a.
* c-common.h (cxx_dialect): Add cxx2a as a dialect.
* opt.c: Add options for -std=c++2a and -std=gnu++2a.
* c-opts.c (set_std_cxx2a): New.
(c_common_handle_option): Set options when -std=c++2a is enabled.
(c_common_post_options): Adjust comments.
(set_std_cxx14, set_std_cxx17): Likewise.
* doc/cpp.texi (__cplusplus): Document value for -std=c++2a
or -std=gnu+2a.
* doc/invoke.texi: Document -std=c++2a and -std=gnu++2a.
* lib/target-supports.exp (check_effective_target_c++17): Return
1 also if check_effective_target_c++2a.
(check_effective_target_c++17_down): New.
(check_effective_target_c++2a_only): New.
(check_effective_target_c++2a): New.
* g++.dg/cpp2a/cplusplus.C: New.
* include/cpplib.h (c_lang): Add CXX2A and GNUCXX2A.
* init.c (lang_defaults): Add rows for CXX2A and GNUCXX2A.
(cpp_init_builtins): Set __cplusplus to 201709L for C++2a.
Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r252850
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/cpp.texi | 5 | ||||
| -rw-r--r-- | gcc/doc/invoke.texi | 10 |
2 files changed, 14 insertions, 1 deletions
diff --git a/gcc/doc/cpp.texi b/gcc/doc/cpp.texi index 8e9cba3..52f2606 100644 --- a/gcc/doc/cpp.texi +++ b/gcc/doc/cpp.texi @@ -1877,7 +1877,10 @@ selected, the value of the macro is @code{199711L} for the 1998 C++ standard, @code{201103L} for the 2011 C++ standard, @code{201402L} for the 2014 C++ standard, -@code{201703L} for the 2017 C++ standard. +@code{201703L} for the 2017 C++ standard, +or an unspecified value strictly larger than @code{201703L} for the +experimental languages enabled by @option{-std=c++2a} and +@option{-std=gnu++2a}. @item __OBJC__ This macro is defined, with value 1, when the Objective-C compiler is in diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 60650c8..204c9b7 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -1880,6 +1880,16 @@ The name @samp{c++1z} is deprecated. @itemx gnu++1z GNU dialect of @option{-std=c++17}. The name @samp{gnu++1z} is deprecated. + +@item c++2a +The next revision of the ISO C++ standard, tentatively planned for +2020. Support is highly experimental, and will almost certainly +change in incompatible ways in future releases. + +@item gnu++2a +GNU dialect of @option{-std=c++2a}. Support is highly experimental, +and will almost certainly change in incompatible ways in future +releases. @end table @item -fgnu89-inline |