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view gcc/testsuite/g++.dg/cpp0x/sfinae47.C @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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// Source: Comment 16 of PR51213 // { dg-do compile { target c++11 } } template <class T> T && declval(); template <class T> constexpr auto hasSize(int) -> decltype(declval<T&>().size(), bool()) { return true; } template <class T> constexpr bool hasSize(...) { return false; } struct A { int size(); }; struct B : private A { }; static_assert(hasSize<A>(0), "A"); static_assert(!hasSize<B>(0), "B");