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NNTP-Posting-Date: Fri, 07 Aug 2015 14:00:21 -0500
From: Gareth Owen <gwowen@gmail.com>
Newsgroups: comp.lang.c
Subject: Re: I want to ask a question...
References: <mq2uol$dpj$3@dont-email.me>
Date: Fri, 07 Aug 2015 20:00:20 +0100
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Ramine <ramine@1.1> writes:

> Suppose that you are using a pointer that points to an allocated chunk
> of memory, and suppose that you deallocated this chunk of memory and
> you have keeped the old address of this pointer inside another pointer
> , is there a problem to access the old address of the pointer and
> content of the memory even if it was deallocated ?

You can access the pointer itself, but you can't access the memory it
points to.  Sometimes it might work - and it simple programs it probably
will work more ofhen than not - but you can't rely on it.

Don't do that.