Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/var-templ2.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children | 1830386684a0 |
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// PR c++/67139 // { dg-do compile { target c++17 } } // { dg-options "-fconcepts" } template <class T> constexpr typename T::type::value_type _v = T::type::value; template <class T> concept bool IsTrue_() { return _v<T>; } template <class T> concept bool Unpossible() { return IsTrue_<T &&>(); } template <class> constexpr bool unpossible() { return false; } Unpossible{ T } constexpr bool unpossible() { return true; } static_assert((!unpossible<void>()), "");