Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp2a/concepts-pr67654.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
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date | Thu, 13 Feb 2020 11:34:05 +0900 |
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// PR c++/67427 // { dg-do compile { target c++2a } } // { dg-additional-options "-fconcepts-ts" } template <bool... Values> struct and_c_impl { static constexpr bool value = true; }; template <bool ValueFirst, bool... ValuesRest> struct and_c_impl<ValueFirst, ValuesRest...> { static constexpr bool value = ValueFirst && and_c_impl<ValuesRest...>::value; }; template <bool... Values> constexpr bool and_c() { return and_c_impl<Values...>::value; } template<class T> concept bool C() { return true; } template<class... Tx> struct A { A() requires and_c<C<Tx>()...>() = default; }; int main() { A<int, double> a; return 0; }