Implement LWG 2773 - std::ignore should be constexpr. In addition to the PR for LWG 2773 this patch also ensures that each of std::ignores constructors or assignment operators are constexpr. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@294165 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/tuple b/include/tuple index b48e2d6..f2a7472 100644 --- a/include/tuple +++ b/include/tuple
@@ -1064,11 +1064,13 @@ struct __ignore_t { template <class _Tp> - _LIBCPP_INLINE_VISIBILITY - const __ignore_t& operator=(_Tp&&) const {return *this;} + _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 + const __ignore_t& operator=(_Tp&&) const {return *this;} }; -namespace { const __ignore_t<unsigned char> ignore = __ignore_t<unsigned char>(); } +namespace { + constexpr __ignore_t<unsigned char> ignore = __ignore_t<unsigned char>(); +} template <class _Tp> struct __make_tuple_return_impl 