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From: Phil Carmody <pc+usenet@asdf.org>
Newsgroups: comp.lang.c
Subject: Re: realloc() - frequency, conditions, or experiences about relocation?
Date: Fri, 28 Jun 2024 11:01:38 +0300
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Keith Thompson <Keith.S.Thompson+u@gmail.com> writes:
> Suppose you do something like:
>
>     some_type *p = malloc(BIG_VALUE);
>     // ...
>     p = realloc(p, SMALL_VALUE);
>
> ...  If realloc() succeeds and *does* relocate the object, p
> still points to memory that has now been deallocated, and you don't have
> a pointer to the newly allocated memory.

Surely some mistake?

However, such self-assignments are bad for the reasons you state later;
verify, then update.

Phil
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