Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/placeholder2.C @ 158:494b0b89df80 default tip
...
author | Shinji KONO <kono@ie.u-ryukyu.ac.jp> |
---|---|
date | Mon, 25 May 2020 18:13:55 +0900 |
parents | 1830386684a0 |
children |
line wrap: on
line source
// { 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); }