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 <sanitizer/hwasan_interface.h>
7 #include <stdlib.h>
8 #include <string.h>
9 #include <unistd.h>
10
11 __attribute__((no_sanitize("hwaddress"))) void
ForceCallInterceptor(void * p,const void * a,size_t size)12 ForceCallInterceptor(void *p, const void *a, size_t size) {
13 memcpy(p, a, size);
14 }
15
main(int argc,char ** argv)16 int 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);
21 free(p);
22 ForceCallInterceptor(p, a, size);
23 return 0;
24 // CHECK: HWAddressSanitizer: tag-mismatch on address
25 // CHECK: WRITE of size 4
26 // CHECK: #{{[[:digit:]]+}} 0x{{[[:xdigit:]]+}} in main {{.*}}memcpy.cpp:[[@LINE-4]]
27 // CHECK: Cause: use-after-free
28 // CHECK: freed by thread
29 // CHECK: #{{[[:digit:]]+}} 0x{{[[:xdigit:]]+}} in main {{.*}}memcpy.cpp:[[@LINE-8]]
30 // CHECK: previously allocated by thread
31 // CHECK: #{{[[:digit:]]+}} 0x{{[[:xdigit:]]+}} in main {{.*}}memcpy.cpp:[[@LINE-11]]
32 }
33