1 // RUN: %clangxx_hwasan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s
2 // RUN: %clangxx_hwasan -O1 %s -o %t && not %run %t 2>&1 | FileCheck %s
3 // RUN: %clangxx_hwasan -O2 %s -o %t && not %run %t 2>&1 | FileCheck %s
4 // RUN: %clangxx_hwasan -O3 %s -o %t && not %run %t 2>&1 | FileCheck %s
5
6 #include <assert.h>
7 #include <sanitizer/hwasan_interface.h>
8 #include <stdlib.h>
9 #include <string.h>
10 #include <unistd.h>
11
12 __attribute__((no_sanitize("hwaddress"))) void
ForceCallInterceptor(void * p,const void * a,size_t size)13 ForceCallInterceptor(void *p, const void *a, size_t size) {
14 assert(memcmp(p, a, size) == 0);
15 }
16
main(int argc,char ** argv)17 int main(int argc, char **argv) {
18 __hwasan_enable_allocator_tagging();
19 char a[] = {static_cast<char>(argc), 2, 3, 4};
20 int size = sizeof(a);
21 char *p = (char *)malloc(size);
22 memcpy(p, a, size);
23 free(p);
24 ForceCallInterceptor(p, a, size);
25 return 0;
26 // CHECK: HWAddressSanitizer: tag-mismatch on address
27 // CHECK: READ of size 4
28 // CHECK: #{{[[:digit:]]+}} 0x{{[[:xdigit:]]+}} in main {{.*}}memcmp.cpp:[[@LINE-4]]
29 // CHECK: Cause: use-after-free
30 // CHECK: freed by thread
31 // CHECK: #{{[[:digit:]]+}} 0x{{[[:xdigit:]]+}} in main {{.*}}memcmp.cpp:[[@LINE-8]]
32 // CHECK: previously allocated by thread
33 // CHECK: #{{[[:digit:]]+}} 0x{{[[:xdigit:]]+}} in main {{.*}}memcmp.cpp:[[@LINE-12]]
34 }
35