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Re: building/using address-sanitizer-enabled emacs?

From: Eli Zaretskii
Subject: Re: building/using address-sanitizer-enabled emacs?
Date: Thu, 18 May 2017 07:15:02 +0300

> Cc: address@hidden, address@hidden
> From: Paul Eggert <address@hidden>
> Date: Wed, 17 May 2017 13:05:29 -0700
> On 05/17/2017 09:06 AM, Eli Zaretskii wrote:
> > I think we might be talking about 2 different reports. I meant the
> > one here:
> >
> >    http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00246.html
> Ah, that came after his original report 
> <http://lists.gnu.org/archive/html/emacs-devel/2017-05/msg00182.html>, 
> which is the one I was referring to. I reproduced the later problem, and 
> as near as I can make it out it is due to an incompatibility between 
> vfork and -fsanitize=address. My guess is that the vforked child 
> corrupts the parent's shadow memory. I worked around the problem by 
> installing the attached patch into Emacs.

Yes, that makes sense, given the details in the reports, which indeed
hinted on such an incompatibility.


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