Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp2a/concepts-pr67969.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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// { dg-do compile { target c++2a } } // { dg-additional-options "-fconcepts-ts" } template <class, class> class NumericArray {}; template <class> constexpr bool match_numeric_array = false; template <class Scalar, class Shape> constexpr bool match_numeric_array<NumericArray<Scalar, Shape>> = true; template <class T> concept bool cpt_NumericArrayContainer() { return match_numeric_array<T>; } template <class X> concept bool cpt_NumericArray() { return requires{requires cpt_NumericArrayContainer<X>();}; } template <class X> requires !cpt_NumericArray<X>() auto func(int, X) {} template <class X> requires cpt_NumericArray<X>() auto func(int, X) {} int main() { NumericArray<double, int> v5; func(0, v5); }