1 // RUN: %clang_cl_asan %Od %s %Fe%t
2 // RUN: not %run %t 2>&1 | FileCheck %s
3
4 #include <stdio.h>
5 #include <string.h>
6 #include <malloc.h>
7
main()8 int main() {
9 char *ptr = _strdup("Hello");
10 int subscript = 1;
11 ptr[subscript] = '3';
12 printf("%s\n", ptr);
13 fflush(0);
14 // CHECK: H3llo
15
16 subscript = -1;
17 ptr[subscript] = 42;
18 // CHECK: AddressSanitizer: heap-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
19 // CHECK: WRITE of size 1 at [[ADDR]] thread T0
20 // CHECK: {{#0 .* main .*}}intercept_strdup.cpp:[[@LINE-3]]
21 // CHECK: [[ADDR]] is located 1 bytes before 6-byte region
22 // CHECK: allocated by thread T0 here:
23 //
24 // The first frame is our wrapper normally but will be malloc in the dynamic
25 // config.
26 // CHECK: #0 {{.*}} in {{malloc|_strdup}}
27 //
28 // The local call to _strdup above may be the second or third frame depending
29 // on whether we're using the dynamic config.
30 // CHECK: #{{[12]}} {{.*}} in main {{.*}}intercept_strdup.cpp:[[@LINE-21]]
31 free(ptr);
32 }
33