Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp2a/concepts-iconv1.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++/67240 // { dg-do compile { target c++2a } } template <class T, class U> concept Same = __is_same_as(T,U); int foo(int x) { return x; } template <typename T> concept C1 = requires (T x) { {foo(x)} -> Same<int&>; // { dg-error "placeholder constraints" } }; template <typename T> concept C2 = requires (T x) { {foo(x)} -> Same<void>; // { dg-error "placeholder constraints" } }; static_assert( C1<int> ); // { dg-error "assert" } static_assert( C2<int> ); // { dg-error "assert" }