Question

There is a function:

void some_function(int id,...);

question: is there a way to wrap this function? It means to get something like this:

void wrapped_some_function(int id,...)
{
   //do smth
   some_function(id,...);
}

Answer 1

With gcc, __builtin_apply_args and __builtin_apply, documented here, can do it.
For standard C, there’s no way (what other answers suggest can work, but it isn’t 100% what you ask for).
But if there’s a variation of some_function that gets va_list (like vprintf is a variation of printf), you can use it.