Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/placeholder2.C @ 145:1830386684a0
gcc-9.2.0
author | anatofuz |
---|---|
date | Thu, 13 Feb 2020 11:34:05 +0900 |
parents | 84e7813d76e9 |
children |
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// { dg-do compile { target c++17_only } } // { dg-options "-fconcepts" } template<typename T> concept bool C1 = sizeof(T) == 0; template<typename T, typename U> concept bool C2 = __is_same_as(T, U); template<typename T> concept bool D1 = requires (T t) { { t } -> C1; }; template<typename T> concept bool D2 = requires (T t) { { t } -> C2<void>; }; void f1(auto D1) { } // OK: D1 is declared as a parameter void f2(auto D2) { } // OK: D2 is declared as a parameter int main() { f1(0); f2(0); }