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| author | Eric Fiselier <eric@efcs.ca> | 2019-08-03 23:54:29 +0000 |
|---|---|---|
| committer | Eric Fiselier <eric@efcs.ca> | 2019-08-03 23:54:29 +0000 |
| commit | fcd549a7d8284a8e7c763fee3da2206acd8cdc4f (patch) | |
| tree | 59861c49742757d9a123ef9322e56c5890852149 /libcxx/include/__config | |
| parent | 44b16bd4a5b20ce8b4e9ef56836123a2038f3670 (diff) | |
| download | bcm5719-llvm-fcd549a7d8284a8e7c763fee3da2206acd8cdc4f.tar.gz bcm5719-llvm-fcd549a7d8284a8e7c763fee3da2206acd8cdc4f.zip | |
Suppress -Wctad-maybe-unsupported on types w/o deduction guides.
There are a handful of standard library types that are intended
to support CTAD but don't need any explicit deduction guides to
do so.
This patch adds a dummy deduction guide to those types to suppress
-Wctad-maybe-unsupported (which gets emitted in user code).
llvm-svn: 367770
Diffstat (limited to 'libcxx/include/__config')
| -rw-r--r-- | libcxx/include/__config | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libcxx/include/__config b/libcxx/include/__config index e49adb4d63a..a8991c37056 100644 --- a/libcxx/include/__config +++ b/libcxx/include/__config @@ -1429,6 +1429,15 @@ _LIBCPP_FUNC_VIS extern "C" void __sanitizer_annotate_contiguous_container( #define _LIBCPP_UNUSED_VAR(x) ((void)(x)) +#ifndef _LIBCPP_HAS_NO_DEDUCTION_GUIDES +#define _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(_ClassName) \ + template <class _Tag = void> \ + _ClassName(typename _Tag::__allow_ctad) -> _ClassName<void> +#else +#define _LIBCPP_CTAD_SUPPORTED_FOR_TYPE(_ClassName) \ + static_assert(true, "") +#endif // _LIBCPP_HAS_NO_DEDUCTION_GUIDES + #endif // __cplusplus #endif // _LIBCPP_CONFIG |
