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Re: [PATCH] malloc: Correct size computation in realloc for dumped fake mmapped chunks

From: Mike Frysinger <vapier at gentoo dot org>
To: Florian Weimer <fweimer at redhat dot com>
Cc: libc-alpha at sourceware dot org
Date: Thu, 9 Jun 2016 15:22:28 -0400
Subject: Re: [PATCH] malloc: Correct size computation in realloc for dumped fake mmapped chunks
Authentication-results: sourceware.org; auth=none
References: <20160608185123 dot BB0D84012CF92 at oldenburg dot str dot redhat dot com>

On 08 Jun 2016 20:51, Florian Weimer wrote:
> For regular mmapped chunks there are two size fields (hence a reduction
> by 2 * SIZE_SZ bytes), but for fake chunks, we only have one size field,
> so we need to subtract SIZE_SZ bytes.
> 
> This was initially reported as Emacs bug 23726.

is it normally user visible ?  if so, i think we'd want a bug on our side
too for it.
-mike

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