1// RUN: %clang_cl_asan -O0 %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
8int 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.cc:[[@LINE-3]]
21// CHECK: [[ADDR]] is located 1 bytes to the left of 6-byte region
22// CHECK: allocated by thread T0 here:
23// CHECK:   {{#0 .* malloc }}
24// CHECK:   {{#1 .*strdup}}
25// CHECK:   {{#2 .* main .*}}intercept_strdup.cc:[[@LINE-16]]
26  free(ptr);
27}
28