aggregate.pass.cpp
1.53 KB
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
43
44
45
46
47
48
49
50
51
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// Make sure std::array is an aggregate type.
// We can only check this in C++17 and above, because we don't have the
// trait before that.
// UNSUPPORTED: c++03, c++11, c++14
// libc++ doesn't implement std::is_aggregate on GCC 5 and GCC 6.
// UNSUPPORTED: libc++ && gcc-5
// UNSUPPORTED: libc++ && gcc-6
#include <array>
#include <type_traits>
template <typename T>
void check_aggregate()
{
static_assert(std::is_aggregate<std::array<T, 0> >::value, "");
static_assert(std::is_aggregate<std::array<T, 1> >::value, "");
static_assert(std::is_aggregate<std::array<T, 2> >::value, "");
static_assert(std::is_aggregate<std::array<T, 3> >::value, "");
static_assert(std::is_aggregate<std::array<T, 4> >::value, "");
}
struct Empty { };
struct Trivial { int i; int j; };
struct NonTrivial {
int i; int j;
NonTrivial(NonTrivial const&) { }
};
int main(int, char**)
{
check_aggregate<char>();
check_aggregate<int>();
check_aggregate<long>();
check_aggregate<float>();
check_aggregate<double>();
check_aggregate<long double>();
check_aggregate<Empty>();
check_aggregate<Trivial>();
check_aggregate<NonTrivial>();
return 0;
}