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
52
53
54
55
56
57
58
59
60
61
62
|
//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// type_traits
// alignment_of
#include <type_traits>
#include <cstdint>
#include "test_macros.h"
template <class T, unsigned A>
void test_alignment_of()
{
const unsigned AlignofResult = TEST_ALIGNOF(T);
static_assert( AlignofResult == A, "Golden value does not match result of alignof keyword");
static_assert( std::alignment_of<T>::value == AlignofResult, "");
static_assert( std::alignment_of<T>::value == A, "");
static_assert( std::alignment_of<const T>::value == A, "");
static_assert( std::alignment_of<volatile T>::value == A, "");
static_assert( std::alignment_of<const volatile T>::value == A, "");
#if TEST_STD_VER > 14
static_assert( std::alignment_of_v<T> == A, "");
static_assert( std::alignment_of_v<const T> == A, "");
static_assert( std::alignment_of_v<volatile T> == A, "");
static_assert( std::alignment_of_v<const volatile T> == A, "");
#endif
}
class Class
{
public:
~Class();
};
int main(int, char**)
{
test_alignment_of<int&, 4>();
test_alignment_of<Class, 1>();
test_alignment_of<int*, sizeof(intptr_t)>();
test_alignment_of<const int*, sizeof(intptr_t)>();
test_alignment_of<char[3], 1>();
test_alignment_of<int, 4>();
// The test case below is a hack. It's hard to detect what golden value
// we should expect. In most cases it should be 8. But in i386 builds
// with Clang >= 8 or GCC >= 8 the value is '4'.
test_alignment_of<double, TEST_ALIGNOF(double)>();
#if (defined(__ppc__) && !defined(__ppc64__))
test_alignment_of<bool, 4>(); // 32-bit PPC has four byte bool
#else
test_alignment_of<bool, 1>();
#endif
test_alignment_of<unsigned, 4>();
return 0;
}
|
