Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/concepts/diagnostic1.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children | 1830386684a0 |
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// PR c++/67159 // { dg-do compile { target c++17 } } // { dg-options "-fconcepts" } template <class T, class U> concept bool SameAs = __is_same_as(T, U); template <class T> concept bool R1 = requires (T& t) { { t.begin() } -> T { t.end() } -> SameAs<T*>; }; template <class T> concept bool R2 = requires (T& t) { { t.end() } -> SameAs<T*>; }; struct foo { int* begin(); int* end(); }; R1{T} constexpr bool f() { return true; } R2{T} constexpr bool g() { return true; } static_assert(f<foo>()); // { dg-error "" } static_assert(g<foo>()); // { dg-error "" }