Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/placeholder1.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
line wrap: on
line source
// { dg-do compile { target c++17 } } // { dg-options "-fconcepts" } template<typename T, typename U> struct is_same { static constexpr bool value = false; }; template<typename T> struct is_same<T, T> { static constexpr bool value = true; }; template<class T, class U> concept bool Same = is_same<T, U>::value; template<typename T> concept bool C1 = true; template<typename T, typename U> concept bool C2 = true; template<typename T> concept bool C3() { return true; } template<typename T, typename U> concept bool C4() { return true; } C1 c1 = 0; C2<int> c2 = 0; C3 c3 = 0; C4<int> c4 = 0; Same<int> s1 = 'a'; // { dg-error "does not satisfy|is_same" }