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Re: Why is cld used?

From: Ulrich Drepper <drepper at redhat dot com>
To: Andreas Schwab <schwab at suse dot de>
Cc: GNU C Library <libc-alpha at sources dot redhat dot com>
Date: Tue, 01 Jul 2003 08:58:04 -0700
Subject: Re: Why is cld used?
Organization: Red Hat, Inc.
References: <20030701004150.GA32230@lucon.org> <3F00DE72.2090406@redhat.com> <jen0fyijfy.fsf@sykes.suse.de>

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Andreas Schwab wrote:

> In which way is this different from any other ABI violation of the caller?

The difference is that the std isntruction can be maliciously added at
some completely other places without having any ill effects.  And then
some memory copying or some memory clearing (memset) will fail.
suddenly memory is copied to the wrong place, passwords are not erased
from memory, etc.

- -- 
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Ulrich Drepper \    ,-----------------'   \ Mountain View, CA 94041 USA
Red Hat         `--' drepper at redhat.com `---------------------------
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References:
- Why is cld used?
  - From: H. J. Lu
- Re: Why is cld used?
  - From: Ulrich Drepper
- Re: Why is cld used?
  - From: Andreas Schwab

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