test/asan/TestCases/Windows/dll_malloc_uaf.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
   8 extern "C" __declspec(dllexport)
   9 int test_function() {
  10   int *buffer = (int*)malloc(42);
  11   free(buffer);
  12   buffer[0] = 42;
  13 // CHECK: AddressSanitizer: heap-use-after-free on address [[ADDR:0x[0-9a-f]+]]
  14 // CHECK: WRITE of size 4 at [[ADDR]] thread T0
  15 // CHECK-NEXT:  test_function {{.*}}dll_malloc_uaf.cc:[[@LINE-3]]
  16 // CHECK-NEXT:  main {{.*}}dll_host
  17 //
  18 // CHECK: [[ADDR]] is located 0 bytes inside of 42-byte region
  19 // CHECK-LABEL: freed by thread T0 here:
  20 // CHECK:       free
  21 // CHECK:       test_function {{.*}}dll_malloc_uaf.cc:[[@LINE-10]]
  22 // CHECK-NEXT:  main {{.*}}dll_host
  23 //
  24 // CHECK-LABEL: previously allocated by thread T0 here:
  25 // CHECK:       malloc
  26 // CHECK:       test_function {{.*}}dll_malloc_uaf.cc:[[@LINE-16]]
  27 // CHECK-NEXT:  main {{.*}}dll_host
  28   return 0;
  29 }