build/win32/crashinjectdll/crashinjectdll.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include <stdio.h>
   6 #include <windows.h>
   7
   8 // make sure we only ever spawn one thread
   9 DWORD tid = -1;
  10
  11 DWORD WINAPI CrashingThread(LPVOID lpParameter) {
  12   // not a very friendly DLL
  13   volatile int* x = (int*)0x0;
  14   *x = 1;
  15   return 0;
  16 }
  17
  18 BOOL WINAPI DllMain(HANDLE hinstDLL, DWORD dwReason, LPVOID lpvReserved) {
  19   if (tid == (DWORD)-1)
  20     // we have to crash on another thread because LoadLibrary() will
  21     // catch memory access errors and return failure to the calling process
  22     CreateThread(nullptr,         // default security attributes
  23                  0,               // use default stack size
  24                  CrashingThread,  // thread function name
  25                  nullptr,         // argument to thread function
  26                  0,               // use default creation flags
  27                  &tid);           // returns the thread identifier
  28   return TRUE;
  29 }