1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03
// Before GCC 6, aggregate initialization kicks in.
// See https://stackoverflow.com/q/41799015/627587.
// UNSUPPORTED: gcc-5
// <utility>
// template <class T1, class T2> struct pair
// explicit(see-below) constexpr pair();
// This test checks the conditional explicitness of std::pair's default
// constructor as introduced by the resolution of LWG 2510.
#include <utility>
struct ImplicitlyDefaultConstructible {
ImplicitlyDefaultConstructible() = default;
};
struct ExplicitlyDefaultConstructible {
explicit ExplicitlyDefaultConstructible() = default;
};
std::pair<ImplicitlyDefaultConstructible, ExplicitlyDefaultConstructible> test1() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
std::pair<ExplicitlyDefaultConstructible, ImplicitlyDefaultConstructible> test2() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
std::pair<ExplicitlyDefaultConstructible, ExplicitlyDefaultConstructible> test3() { return {}; } // expected-error 1 {{chosen constructor is explicit in copy-initialization}}
std::pair<ImplicitlyDefaultConstructible, ImplicitlyDefaultConstructible> test4() { return {}; }
int main(int, char**) {
return 0;
}
|
