Date:	Thu, 8 Nov 2001 11:07:23 +0200 (IST)
From:	Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
X-Sender:	eliz AT is
To:	Raf256 <raf256 AT go2 DOT pl>
cc:	djgpp AT delorie DOT com
Subject:	Re: sizeof void* ?
In-Reply-To:	<Xns91533B07D431Braf256civ@193.219.28.2>
Message-ID:	<Pine.SUN.3.91.1011108110625.10953O-100000@is>
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Reply-To:	djgpp AT delorie DOT com
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On Thu, 8 Nov 2001, Raf256 wrote:

> I have memor area like :
> void *ptr = malloc(1024);
> realloc(ptr, ???);
> 
> how can I here check current size of memory block that begins in ptr ?

You can't; not portably, anyway: there's no standard function to return 
that info.

The usual technique is to store the allocated size in a separate 
variable.

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