Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/req16.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// PR c++/66988 // { dg-do compile { target c++17 } } // { dg-options "-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>(), "");