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Re: I: [PATCH] few asprintf error handling fixes

From: "Dmitry V. Levin" <ldv at altlinux dot org>
To: libc-alpha at sources dot redhat dot com
Date: Wed, 2 Jun 2004 04:46:10 +0400
Subject: Re: I: [PATCH] few asprintf error handling fixes
References: <20040507160528.GA28001@basalt.office.altlinux.org> <40BD00B8.4000602@redhat.com>

On Tue, Jun 01, 2004 at 03:18:32PM -0700, Ulrich Drepper wrote:
> I've applied it now.  The reason I haven't done it before is that I
> thought we should change asprintf to clean the result pointer in case of
> a failure.  The can have a negative side effect (maybe some programs
> depends on current behavior) so I wanted to check. [...]

The current behavior is undefined behavior, the result pointer after
failed asprintf call may contain any value, e.g. pointer to already freed
memory.  I'm doubt that some programs could depend on this behavior.

-- 
ldv

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Follow-Ups:
- Re: I: [PATCH] few asprintf error handling fixes
  - From: Roland McGrath

References:
- Re: I: [PATCH] few asprintf error handling fixes
  - From: Ulrich Drepper

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