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 // RUN: not %run %t %t.dll 2>&1 | FileCheck %s
   4
   5 #include <malloc.h>
   6
   7 extern "C" __declspec(dllexport)
   8 int test_function() {
   9   int *buffer = (int*)malloc(42);
  10   free(buffer);
  11   buffer[0] = 42;
  12 // CHECK: AddressSanitizer: heap-use-after-free on address [[ADDR:0x[0-9a-f]+]]
  13 // CHECK: WRITE of size 4 at [[ADDR]] thread T0
  14 // CHECK-NEXT:  test_function {{.*}}dll_malloc_uaf.cc:[[@LINE-3]]
  15 // CHECK-NEXT:  main {{.*}}dll_host
  16 //
  17 // CHECK: [[ADDR]] is located 0 bytes inside of 42-byte region
  18 // CHECK-LABEL: freed by thread T0 here:
  19 // CHECK-NEXT:  free
  20 // CHECK-NEXT:  test_function {{.*}}dll_malloc_uaf.cc:[[@LINE-10]]
  21 // CHECK-NEXT:  main {{.*}}dll_host
  22 //
  23 // CHECK-LABEL: previously allocated by thread T0 here:
  24 // CHECK-NEXT:  malloc
  25 // CHECK-NEXT:  test_function {{.*}}dll_malloc_uaf.cc:[[@LINE-16]]
  26 // CHECK-NEXT:  main {{.*}}dll_host
  27   return 0;
  28 }