add 64-bit mangled names of new and delete

dll.cpp

@@ -96,14 +96,24 @@ static void SetNewAndDeleteFunctionPointers()
  }
  }
 
+ // try getting these directly using mangled names of new and delete operators
+
  hModule = GetModuleHandle("msvcrtd");
  if (!hModule)
  hModule = GetModuleHandle("msvcrt");
  if (hModule)
  {
- s_pNew = (PNew)GetProcAddress(hModule, "??2@YAPAXI@Z"); // operator new
- s_pDelete = (PDelete)GetProcAddress(hModule, "??3@YAXPAX@Z"); // operator delete
- return;
+ // 32-bit versions
+ s_pNew = (PNew)GetProcAddress(hModule, "??2@YAPAXI@Z");
+ s_pDelete = (PDelete)GetProcAddress(hModule, "??3@YAXPAX@Z");
+ if (s_pNew && s_pDelete)
+ return;
+
+ // 64-bit versions
+ s_pNew = (PNew)GetProcAddress(hModule, "??2@YAPEAX_K@Z");
+ s_pDelete = (PDelete)GetProcAddress(hModule, "??3@YAXPEAX@Z");
+ if (s_pNew && s_pDelete)
+ return;
  }
 
  OutputDebugString("Crypto++ was not able to obtain new and delete function pointers.\n");