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Date: Sun, 10 Feb 2013 20:14:34 -0500
From: Rich Felker <>
Subject: Re: [PATCH 1/3] protect some clobbered variables with volatile

On Sun, Feb 10, 2013 at 11:31:41PM +0100, Jens Gustedt wrote:
> When switching optimization to higher levels (-O3) and enable link time
> optimization (-flto) gcc finds two variables that might be clobbered
> accross longjmp (orig_tail in dynlink) or vfork (f in popen):

This patch looks correct. BTW, popen is about to be replaced to avoid
vfork (using the new posix_spawn instead), but I don't mind applying
this patch first anyway as motivation for why vfork is a bad idea. :-)


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