Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/req16.C @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 84e7813d76e9 |
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// PR c++/66988 // { dg-options "-std=c++17 -fconcepts" } #include <type_traits> template <template <class> class T, class U> concept bool _Valid = requires { typename T<U>; }; template <class T> using __t = typename T::type; template <class T> struct __has_type : std::false_type { }; template <class T> requires _Valid<__t, T> struct __has_type<T> : std::true_type { }; static_assert(!__has_type<int>(), "");