blob: 4fc453fb0ff1190dbad6d476e5d941d6a0a2b5ea (
plain)
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
|
//
// 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, c++11, c++14, c++17
// static constexpr size_t required_alignment;
#include <atomic>
#include <cassert>
#include <concepts>
#include <cstddef>
template <typename T>
constexpr void check_required_alignment() {
std::same_as<const std::size_t> decltype(auto) required_alignment = std::atomic_ref<T>::required_alignment;
assert(required_alignment >= alignof(T));
}
constexpr bool test() {
check_required_alignment<int>();
check_required_alignment<float>();
check_required_alignment<int*>();
struct Empty {};
check_required_alignment<Empty>();
struct Trivial {
int a;
};
check_required_alignment<Trivial>();
return true;
}
int main(int, char**) {
test();
static_assert(test());
return 0;
}
|
