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Re: master segfault

From: Dan Eble
Subject: Re: master segfault
Date: Thu, 23 Jul 2020 13:05:26 -0400

On Jul 22, 2020, at 12:51, James Lowe <> wrote:
> Hello,
> On 22/07/2020 17:32, Dan Eble wrote:
>> I get a segfault when I try to make test-baseline @ 
>> fdf60f1462340bc663846e3efde352408def8f5f.
> Not me. :/
> I just (now) ran through a set of make, make test-basline and make check on 
> current master:HEAD (which that hash refers to) without adding any MR.
> I know that is not technically useful to everyone Dan but it seems it might 
> be something specific to your environment.

It's a heisenbug.  It isn't the random seed itself that makes a difference, 
just the fact that things are done differently now.  Using different 
optimization flags makes a difference too.  I enabled ubsan and it detected 
badness slightly earlier than the segfault, but not early enough that I have 
any idea what might have gone wrong or when.

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