bug#47244: 28.0.50; SIGSEGV in long-runnning Emacs

[Eli Zaretskii]

> Date: Thu, 08 Apr 2021 12:43:02 +0000
> From: Gregory Heytings <gregory@heytings.org>
> cc: Andreas Schwab <schwab@linux-m68k.org>, mwd@md5i.com, 
>     47244@debbugs.gnu.org, mwd@cert.org
> 
> >>> Bisection requires to know the last commit where the bug didn't exist.
> >>
> >> Not the *last* commit, that what bisection is for to find out.  It just 
> >> requires *any* commit where the bug didn't exist.
> >
> > Right, but that's unknown as well here.
> >
> 
> Usually the first step in bisecting is to find some distant commit where 
> the bug did not exist.

Sure, but given the time it takes to reproduce the problem, that could
take much longer than what Martin is doing now.  And if you go far
enough into the past, Emacs will stop building successfully, so you
are stuck there.