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comparison gcc/testsuite/g++.dg/concepts/variadic1.C @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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children 84e7813d76e9
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68:561a7518be6b 111:04ced10e8804
1 // PR c++/66712
2 // { dg-options "-std=c++17 -fconcepts" }
3
4 template <class T, class...Args>
5 concept bool _Constructible_ =
6 requires (Args&&...args)
7 {
8 T{ ((Args&&)(args))... };
9 };
10
11 template <class T, class...Args>
12 constexpr bool _constructible_() { return false; }
13
14 _Constructible_{T, ...Args}
15 constexpr bool _constructible_() { return true; }
16
17 struct S
18 {
19 S(int, char const *);
20 };
21
22 int main()
23 {
24 static_assert(_constructible_<S, int, char const *>(), "");
25 }