Examples of errors detected by the V718 diagnostic

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

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;
}

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 );
  ....
}