Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/g++.dg/template/sfinae24.C @ 131:84e7813d76e9
gcc-8.2
author | mir3636 |
---|---|
date | Thu, 25 Oct 2018 07:37:49 +0900 |
parents | 04ced10e8804 |
children |
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// PR c++/44969 template<bool, typename T = void> struct enable_if { typedef T type; }; template<typename T> struct enable_if<false, T> { }; template<typename Tp, typename Arg1, typename Arg2> class mini_is_constructible { typedef char one; typedef struct { char arr[2]; } two; template<typename Tp1, typename Arg1_, typename Arg2_> static typename enable_if<(sizeof(Tp1(Arg1_(), Arg2_()), 1) > 0), one>::type test(int); template<typename, typename, typename> static two test(...); public: static const bool value = sizeof(test<Tp, Arg1, Arg2>(0)) == 1; }; class A { }; int Test[mini_is_constructible<int, A, A>::value ? -1 : 1];