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Date: Wed, 30 Nov 2005 17:39:59 +0300
From: Andrey Chernov <ache@FreeBSD.ORG>
To: Jason Evans <jasone@canonware.com>
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Cc: freebsd-current@FreeBSD.ORG
Subject: Re: New libc malloc patch
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On Wed, Nov 30, 2005 at 06:32:54AM -0800, Jason Evans wrote:
> In a previous version of the patch, I included compile-time support  
> for redzones around allocations.  Kris Kennaway did a full ports tree  
> build with redzones enabled, and several ports caused redzone  
> corruption, but in every case it was due to writing one byte past the  
> end of an allocation.  None of these were serious, since word  
> alignment required that the "corrupted" byte be unused.  I suspect  
> that we would catch very few serious errors, even if redzones were  
> enabled by default.

You can make red zones word-aligned in addition to byte-aligned variant, 
both as malloc options, of course.

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