[Andrew Pimlott <pimlott@abel.MATH.HARVARD.EDU>] realloc(p, 0) vs. free

Ulrich Drepper drepper@cygnus.com
Wed Apr 28 16:01:00 GMT 1999


Wolfram Gloger <wmglo@dent.med.uni-muenchen.de> writes:

> Well, as the comment in the source says, when malloc(0) returns a
> unique pointer (like it does currently in glibc) it seems consistent
> that realloc(...,0) does so too.  So, if the standard really requires
> that realloc(...,0) frees then we should also consider changing
> malloc(0) to return NULL IMHO.

No.  Please look at the change I've added.

	realloc (NULL, 0)	==	malloc (0)

	realloc (ptr, 0)	==	free (ptr)

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