blob: 138fb4daf461e2b657bb85e3bcf0f4e6a76c7b87 (
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
41
42
43
44
45
46
47
48
49
50
|
//===----------------------------------------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: libcxxabi-no-exceptions
// UNSUPPORTED: c++98, c++03
// The system unwind.h on OS X provides an incorrectly aligned _Unwind_Exception
// type. That causes these tests to fail. This XFAIL is my best attempt at
// working around this failure.
// XFAIL: darwin && libcxxabi-has-system-unwinder
// Test that the address of the exception object is properly aligned as required
// by the relevant ABI
#include <cstdint>
#include <cassert>
#include <unwind.h>
struct __attribute__((aligned)) AlignedType {};
// EHABI : 8-byte aligned
// Itanium: Largest supported alignment for the system
#if defined(_LIBUNWIND_ARM_EHABI)
# define EXPECTED_ALIGNMENT 8
#else
# define EXPECTED_ALIGNMENT alignof(AlignedType)
#endif
static_assert(alignof(_Unwind_Exception) == EXPECTED_ALIGNMENT,
"_Unwind_Exception is incorrectly aligned. This test is expected to fail");
struct MinAligned { };
static_assert(alignof(MinAligned) == 1 && sizeof(MinAligned) == 1, "");
int main() {
for (int i=0; i < 10; ++i) {
try {
throw MinAligned{};
} catch (MinAligned const& ref) {
assert(reinterpret_cast<uintptr_t>(&ref) % EXPECTED_ALIGNMENT == 0);
}
}
}
|
