1// RUN: %clangxx_hwasan %s -o %t
2// RUN: %env_hwasan_opts=halt_on_error=0 not %run %t 2>&1 | FileCheck %s --implicit-check-not=RETURN_FROM_TEST --check-prefixes=CHECK,RECOVER
3// RUN: %env_hwasan_opts=halt_on_error=1 not %run %t 2>&1 | FileCheck %s --implicit-check-not=RETURN_FROM_TEST
4
5#include <sanitizer/hwasan_interface.h>
6#include <stdio.h>
7#include <stdlib.h>
8#include <string.h>
9#include <unistd.h>
10
11__attribute__((no_sanitize("hwaddress"))) void
12ForceCallInterceptor(void *p, int c, size_t size) {
13 memset(s: p, c: c, n: size) == nullptr;
14}
15
16int main(int argc, char **argv) {
17 __hwasan_enable_allocator_tagging();
18 char a[] = {static_cast<char>(argc), 2, 3, 4};
19 int size = sizeof(a);
20 char *volatile p = (char *)malloc(size: size);
21 void *volatile p2 = p;
22 for (int i = 0; p2 == p; p2 = __hwasan_tag_pointer(p, tag: ++i)) {
23 }
24 ForceCallInterceptor(p: p2, c: 0, size);
25 free(ptr: p);
26 fprintf(stderr, format: "RETURN_FROM_TEST\n");
27 return 0;
28 // CHECK: HWAddressSanitizer: tag-mismatch on address
29 // CHECK: WRITE of size 4
30 // CHECK: #{{[[:digit:]]+}} 0x{{[[:xdigit:]]+}} in main {{.*}}memset-recover.cpp:[[@LINE-28]]
31 // RECOVER: RETURN_FROM_TEST
32}
33

source code of compiler-rt/test/hwasan/TestCases/memset-recover.cpp