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| author | Jason Merrill <jason@redhat.com> | 2016-03-08 17:30:44 -0500 |
|---|---|---|
| committer | Jason Merrill <jason@gcc.gnu.org> | 2016-03-08 17:30:44 -0500 |
| commit | 80aac5c82043b6f3d7b2100e1f2f9abbbad97e89 (patch) | |
| tree | 25bdfea51e1be2eb39b8e789b3b2f3eb0e543289 /gcc/doc | |
| parent | 1e546b68c1e45d0f1fffbf02c5324717264816c4 (diff) | |
| download | gcc-80aac5c82043b6f3d7b2100e1f2f9abbbad97e89.zip gcc-80aac5c82043b6f3d7b2100e1f2f9abbbad97e89.tar.gz gcc-80aac5c82043b6f3d7b2100e1f2f9abbbad97e89.tar.bz2 | |
Remove Concepts from -std=c++1z.
gcc/c-family/
* c-opts.c (set_std_cxx1z): Don't enable concepts.
gcc/testsuite/
* lib/g++-dg.exp (g++-dg-runtest): Handle "concepts" in std list.
* lib/target-supports.exp (check_effective_target_concepts): New.
gcc/cp/
* parser.c (cp_parser_diagnose_invalid_type_name): Give helpful
diagnostic for use of "concept".
(cp_parser_requires_clause_opt): And "requires".
(cp_parser_type_parameter, cp_parser_late_return_type_opt)
(cp_parser_explicit_template_declaration): Adjust.
* Make-lang.in (check-c++-all): Add "concepts" to std list.
From-SVN: r234069
Diffstat (limited to 'gcc/doc')
| -rw-r--r-- | gcc/doc/invoke.texi | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi index 62c70d5..9580c10 100644 --- a/gcc/doc/invoke.texi +++ b/gcc/doc/invoke.texi @@ -2238,6 +2238,16 @@ return value even without this option. In all other cases, when exhaustion is signalled by throwing @code{std::bad_alloc}. See also @samp{new (nothrow)}. +@item -fconcepts +@opindex fconcepts +Enable support for the C++ Extensions for Concepts Technical +Specification, ISO 19217 (2015), which allows code like + +@smallexample +template <class T> concept bool Addable = requires (T t) @{ t + t; @}; +template <Addable T> T add (T a, T b) @{ return a + b; @} +@end smallexample + @item -fconstexpr-depth=@var{n} @opindex fconstexpr-depth Set the maximum nested evaluation depth for C++11 constexpr functions |