Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/variadic2.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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// { dg-options "-std=c++17 -fconcepts" } template <class T> concept bool Copyable = requires (T t) { T(t); }; template <class T> concept bool Constructable = requires { T(); }; template <class T> concept bool Both = Copyable<T> && Constructable<T>; template <Copyable... Ts> constexpr int f(Ts...) { return 0; } // #1 template <Both... Ts> constexpr int f(Ts...) { return 1; } // #2 int main() { static_assert(f(42) == 1); }