compiler-rt/test/asan/TestCases/Windows/heaprealloc.cpp

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