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

   1 // RUN: %clang_cl_asan %Od %p/dll_host.cpp %Fe%t
   2 // RUN: %clang_cl_asan %LD %Od %s %Fe%t.dll
   3 // RUN: not %run %t %t.dll 2>&1 | FileCheck %s
   4
   5 #include <windows.h>
   6 #include <malloc.h>
   7
   8 DWORD WINAPI thread_proc(void *context) {
   9   int subscript = -1;
  10   char stack_buffer[42];
  11   stack_buffer[subscript] = 42;
  12 // CHECK: AddressSanitizer: stack-buffer-underflow on address [[ADDR:0x[0-9a-f]+]]
  13 // CHECK: WRITE of size 1 at [[ADDR]] thread T1
  14 // CHECK-NEXT:  thread_proc{{.*}}dll_thread_stack_array_left_oob.cpp:[[@LINE-3]]
  15 //
  16 // CHECK: Address [[ADDR]] is located in stack of thread T1 at offset [[OFFSET:.*]] in frame
  17 // CHECK-NEXT:  thread_proc{{.*}}dll_thread_stack_array_left_oob.cpp
  18 //
  19 // CHECK: 'stack_buffer'{{.*}} <== Memory access at offset [[OFFSET]] underflows this variable
  20
  21   return 0;
  22 }
  23
  24 extern "C" __declspec(dllexport)
  25 int test_function() {
  26   HANDLE thr = CreateThread(NULL, 0, thread_proc, NULL, 0, NULL);
  27 // CHECK-LABEL: Thread T1 created by T0 here:
  28 // CHECK:         test_function{{.*}}dll_thread_stack_array_left_oob.cpp:[[@LINE-2]]
  29 // CHECK-NEXT:    main{{.*}}dll_host.cpp
  30 // CHECK-LABEL: SUMMARY
  31   if (thr == 0)
  32     return 1;
  33   if (WAIT_OBJECT_0 != WaitForSingleObject(thr, INFINITE))
  34     return 2;
  35   return 0;
  36 }