From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jeff King <peff@peff.net>
Subject: Re: [PATCH v2 1/3] Introduce die_errno() that appends
	strerror(errno) to die()
Date: Sat, 6 Jun 2009 18:47:11 -0400
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References: <cover.1244299302.git.trast@student.ethz.ch> <3672f22723a4c14c4a6d67278e9865424c0c68dc.1244299302.git.trast@student.ethz.ch> <200906062236.42858.j6t@kdbg.org> <200906062256.34074.trast@student.ethz.ch>
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Cc: Johannes Sixt <j6t@kdbg.org>, Junio C Hamano <gitster@pobox.com>,
	git@vger.kernel.org, Alexander Potashev <aspotashev@gmail.com>
To: Thomas Rast <trast@student.ethz.ch>
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On Sat, Jun 06, 2009 at 10:56:31PM +0200, Thomas Rast wrote:

> > Cannot vsnprintf potentially modify errno?
> 
> Manpage turns up nothing, so AFAICT, no.

POSIX seems to imply that it can:

  http://www.opengroup.org/onlinepubs/009695399/functions/fprintf.html

though it looks like the conditions are fairly unlikely.

-Peff