The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/build/win32/crashinjectdll/crashinjectdll.cpp	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,38 @@
     1.4 +/* This Source Code Form is subject to the terms of the Mozilla Public
     1.5 + * License, v. 2.0. If a copy of the MPL was not distributed with this
     1.6 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
     1.7 +
     1.8 +#include <stdio.h>
     1.9 +#include <windows.h>
    1.10 +
    1.11 +// make sure we only ever spawn one thread
    1.12 +DWORD tid = -1;
    1.13 +
    1.14 +DWORD WINAPI CrashingThread(
    1.15 +  LPVOID lpParameter
    1.16 +)
    1.17 +{
    1.18 +  // not a very friendly DLL
    1.19 +  volatile int* x = (int *)0x0;
    1.20 +  *x = 1;
    1.21 +  return 0;
    1.22 +}
    1.23 +
    1.24 +BOOL WINAPI DllMain(
    1.25 +  HANDLE hinstDLL,
    1.26 +  DWORD dwReason,
    1.27 +  LPVOID lpvReserved
    1.28 +)
    1.29 +{
    1.30 +  if (tid == -1)
    1.31 +    // we have to crash on another thread because LoadLibrary() will
    1.32 +    // catch memory access errors and return failure to the calling process
    1.33 +    CreateThread(
    1.34 +                 nullptr,                // default security attributes
    1.35 +                 0,                      // use default stack size
    1.36 +                 CrashingThread,         // thread function name
    1.37 +                 nullptr,                // argument to thread function
    1.38 +                 0,                      // use default creation flags
    1.39 +                 &tid);                  // returns the thread identifier
    1.40 +  return TRUE;
    1.41 +}