Using address of a parameter of a function

[hzmonte]

I inherit this piece of code:

 
struct LINK *link_id_search(int link_id)
{
  struct LINK *link;
  link = (LINK *) splaySearch(daemon_body.links, &link_id);
  return link;
}

It passes the address of a primitive-data-type parameter (&link_id) to another function. I have never seen this. Is this legal? Does it have a defined behavior?
The type of the 2nd parameter of splaySearch() is void *.

[matsp]

It is perfectly legal and valid.

However, if you in your search function STORE the pointer "permanently" it would be undefined behaviour as the local variable would disappear. I doubt that the search code actually does store it, tho'.

--
Mats