Q: Realloc of function parameter problem.

[Conor P. Cahill]

In article <3752 at umiami.miami.edu>, SLORES at umiami.miami.edu (Stanislaw L. Olejniczak) writes:
>     *substr = (char *) realloc ( (unsigned) (numchar + 1), *substr);

First, you must RTFM.  The order of arguments to realloc is:

		realloc(ptr,size);
		char * ptr;
		unsigned size;

Second, although not explicitly stated in the manual, the pointer passed
to realloc must be a ptr that was returned by a previous malloc.  Your
example was passing a pointer to an automatic variable.


-- 
+-----------------------------------------------------------------------+
| Conor P. Cahill     uunet!virtech!cpcahil      	703-430-9247	!
| Virtual Technologies Inc.,    P. O. Box 876,   Sterling, VA 22170     |
+-----------------------------------------------------------------------+