1*673dc3d4SNico Weber // RUN: %clang_cl_asan -Od %s -Fe%t
2*673dc3d4SNico Weber // RUN: %env_asan_opts=windows_hook_rtl_allocators=true not %run %t 2>&1 | FileCheck %s
3*673dc3d4SNico Weber // UNSUPPORTED: asan-64-bits
4*673dc3d4SNico Weber #include <stdio.h>
5*673dc3d4SNico Weber #include <windows.h>
6*673dc3d4SNico Weber 
main()7*673dc3d4SNico Weber int main() {
8*673dc3d4SNico Weber   char *oldbuf;
9*673dc3d4SNico Weber   size_t sz = 8;
10*673dc3d4SNico Weber   HANDLE procHeap = GetProcessHeap();
11*673dc3d4SNico Weber   oldbuf = (char *)HeapAlloc(procHeap, 0, sz);
12*673dc3d4SNico Weber   char *newbuf = oldbuf;
13*673dc3d4SNico Weber   while (oldbuf == newbuf) {
14*673dc3d4SNico Weber     sz *= 2;
15*673dc3d4SNico Weber     newbuf = (char *)HeapReAlloc(procHeap, 0, oldbuf, sz);
16*673dc3d4SNico Weber   }
17*673dc3d4SNico Weber 
18*673dc3d4SNico Weber   newbuf[0] = 'a';
19*673dc3d4SNico Weber   oldbuf[0] = 'a';
20*673dc3d4SNico Weber   // CHECK: AddressSanitizer: heap-use-after-free on address [[ADDR:0x[0-9a-f]+]]
21*673dc3d4SNico Weber   // CHECK: WRITE of size 1 at [[WRITE2:0x[0-9a-f]+]] thread T0
22*673dc3d4SNico Weber   // CHECK: #0 {{0x[0-9a-f]+ in main.*}}:[[@LINE-3]]
23*673dc3d4SNico Weber }
24