Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/cpp0x/dependent1.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
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date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// PR c++/48319 // { dg-do compile { target c++11 } } // We were failing to recognize declval<_Args1> as dependent. template<typename Tp> Tp declval() noexcept; template<typename _Tp> class __is_constructible_helper { typedef char __one; typedef struct { char __arr[2]; } __two; template<typename _Tp1, typename... _Args1> static decltype(_Tp1(declval<_Args1>()...), __one()) __test(int); template<typename, typename...> static __two __test(...); public: static const bool __value = sizeof(__test<_Tp>(0)) == 1; }; int main() { return __is_constructible_helper<int>::__value; }