test/asan/TestCases/Windows/dll_malloc_left_oob.cc

   1 // RUN: %clangxx_asan -O0 %p/dll_host.cc -Fe%t
   2 // RUN: %clangxx_asan -LD -O0 %s -Fe%t.dll
   3 // FIXME: 'cat' is needed due to PR19744.
   4 // RUN: not %run %t %t.dll 2>&1 | cat | FileCheck %s
   5
   6 #include <malloc.h>
   7 extern "C" __declspec(dllexport)
   8 int test_function() {
   9   char *buffer = (char*)malloc(42);
  10   buffer[-1] = 42;
  11 // CHECK: AddressSanitizer: heap-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
  12 // CHECK: WRITE of size 1 at [[ADDR]] thread T0
  13 // CHECK-NEXT: test_function {{.*}}dll_malloc_left_oob.cc:[[@LINE-3]]
  14 // CHECK-NEXT: main {{.*}}dll_host.cc
  15 //
  16 // CHECK: [[ADDR]] is located 1 bytes to the left of 42-byte region
  17 // CHECK-LABEL: allocated by thread T0 here:
  18 // CHECK-NEXT:   malloc
  19 // CHECK-NEXT:   test_function {{.*}}dll_malloc_left_oob.cc:[[@LINE-10]]
  20 // CHECK-NEXT:   main {{.*}}dll_host.cc
  21 // CHECK-LABEL: SUMMARY
  22   free(buffer);
  23   return 0;
  24 }