1// RUN: %clangxx %collect_stack_traces -O0 %s -o %t
2
3// Alignment is not a power of two:
4// RUN: %env_tool_opts=allocator_may_return_null=0 not %run %t 17 2>&1 | FileCheck %s
5// Alignment is not a power of two, although is a multiple of sizeof(void*):
6// RUN: %env_tool_opts=allocator_may_return_null=0 not %run %t 24 2>&1 | FileCheck %s
7// Alignment is not a multiple of sizeof(void*), although is a power of 2:
8// RUN: %env_tool_opts=allocator_may_return_null=0 not %run %t 2 2>&1 | FileCheck %s
9// Alignment is 0:
10// RUN: %env_tool_opts=allocator_may_return_null=0 not %run %t 0 2>&1 | FileCheck %s
11
12// The same for allocator_may_return_null=1:
13// RUN: %env_tool_opts=allocator_may_return_null=1 %run %t 17 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
14// RUN: %env_tool_opts=allocator_may_return_null=1 %run %t 24 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
15// RUN: %env_tool_opts=allocator_may_return_null=1 %run %t 2 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
16// RUN: %env_tool_opts=allocator_may_return_null=1 %run %t 0 2>&1 | FileCheck %s --check-prefix=CHECK-NULL
17
18// REQUIRES: stable-runtime
19
20// UNSUPPORTED: ubsan
21
22#include <assert.h>
23#include <errno.h>
24#include <stdio.h>
25#include <stdlib.h>
26
27int main(int argc, char **argv) {
28 assert(argc == 2);
29 const int alignment = atoi(nptr: argv[1]);
30
31 void* const kInitialPtrValue = reinterpret_cast<void*>(0x2a);
32 void *p = kInitialPtrValue;
33
34 errno = 0;
35 int res = posix_memalign(memptr: &p, alignment: alignment, size: 100);
36 // CHECK: {{ERROR: .*Sanitizer: invalid alignment requested in posix_memalign}}
37 // CHECK: {{#0 .*posix_memalign}}
38 // CHECK: {{#[12] .*main .*posix_memalign-alignment.cpp:}}[[@LINE-3]]
39 // CHECK: {{SUMMARY: .*Sanitizer: invalid-posix-memalign-alignment}}
40
41 // The NULL pointer is printed differently on different systems, while (long)0
42 // is always the same.
43 fprintf(stderr, format: "errno: %d, res: %d, p: %lx\n", errno, res, (long)p);
44 // CHECK-NULL: errno: 0, res: 22, p: 2a
45
46 return 0;
47}
48

source code of compiler-rt/test/sanitizer_common/TestCases/Posix/posix_memalign-alignment.cpp