Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp0x/narrowing1.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
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// PR c++/80691 // { dg-do compile { target c++11 } } struct true_type { static constexpr bool value = true; }; struct false_type { static constexpr bool value = false; }; template<typename...> using void_t = void; template<typename T> T&& declval(); template<typename T, typename U, typename = void> struct is_nonnarrowing_conversion : false_type {}; template<typename T, typename U> struct is_nonnarrowing_conversion<T, U, void_t<decltype(T{ declval<U>() })>> : true_type {}; template<typename T> class wrapper { public: wrapper(T) {} }; static_assert(!is_nonnarrowing_conversion<int, float>::value, ""); static_assert(!is_nonnarrowing_conversion<wrapper<int>, float>::value, "");