Windows NT6.xでレガシーアプリからマルチスレッドでネイティブ機能を呼び出すと TLS未初期化でクラッシュする

{
 void *tls;
  switch( dwReason )
  {
  case DLL_PROCESS_ATTACH:
//    printf( "process attach\n" );
    break;
  case DLL_PROCESS_DETACH:
//    printf( "process detach\n" );
    break;
  case DLL_THREAD_ATTACH:
  ti.StartAddressOfRawData=TlsAlloc();
//    vec_tls = new std::vector;
//    printf( " thread attach\n" );
    break;
  case DLL_THREAD_DETACH:
//    delete vec_tls;
//    printf( " thread detach\n" );
    break;
  }
}

#pragma data_seg(".CRT$XLB")
PIMAGE_TLS_CALLBACK _xl_b = tls_callback;
//PIMAGE_TLS_CALLBACK p_thread_callback = TlsCallBack;
#pragma data_seg()