Copying someone's data structure correctly

Hi,

I'm using some 3d party library which allocates a pointer to one of their structure types. It looks like this:

    int main()
    {
         SomeStruct* p = 0;
         ThirdPartyFuncToAllocateIt(p);
    }

I have no idea what 'SomeStruct' is or how p gets allocated in their function. I want to make a 'deep' copy of it though to pass to a thread, right now I'm just passing the pointer to the thread which im sure will end in distaster at some point. I want to do this:

int main()
{
     while (listenForConnections) {
   
          SomeStruct* p = 0;
          ThirdPartyFuncToAllocateIt(p);
          StartThread(p);
     }
}

void StartThread(SomeStruct* p)
{
    SomeStruct pDeepCopy = new SomeStruct(p); // make a deep copy of it somehow?
}

I hope that's clear - I jsut want to make sure the thread has its own copy to work with safely.

Thanks