Examples of errors detected by the V718 diagnostic

V718. The 'Foo' function should not be called from 'DllMain' function.

LibreOffice

V718 The 'CreateThread' function should not be called from 'DllMain' function. dllentry.c 308

BOOL WINAPI DllMain( HINSTANCE hinstDLL,
                     DWORD fdwReason, LPVOID lpvReserved )
{
  ....
  CreateThread( NULL, 0, ParentMonitorThreadProc,
                (LPVOID)dwParentProcessId, 0, &dwThreadId );
  ....
}

Open X-Ray Engine

V718 The 'CoInitializeEx' function should not be called from 'DllMain' function. xrcore.cpp 205

#ifdef _EDITOR
BOOL WINAPI DllEntryPoint(....)
#else
BOOL WINAPI DllMain(....)
#endif
{
  switch (ul_reason_for_call)
  {
  ....
  case DLL_THREAD_ATTACH:
    if (!strstr(GetCommandLine(), "-editor"))
      CoInitializeEx(NULL, COINIT_MULTITHREADED);
    timeBeginPeriod(1);
    break;
  ....
  }
  return TRUE;
}