Re: [scratch/igc] 985247b6bee crash on Linux, KDE, Wayland

[Eli Zaretskii <eliz@gnu.org>]

> From: Eval EXEC <execvy@gmail.com>
> Cc: emacs-devel <emacs-devel@gnu.org>
> Date: Thu, 05 Sep 2024 18:44:40 +0800
> 
> Helmut Eller <eller.helmut@gmail.com> writes:
> 
> > On Thu, Sep 05 2024, Eval EXEC wrote:
> >
> >> Helmut Eller <eller.helmut@gmail.com> writes:
> >>
> >>> I think you need to add -fno-omit-frame-pointer (or use the patch
> >>> https://github.com/Ravenbrook/mps/pull/38).  Without that, MPS doesn't
> >>> trace the %rbp register properly.
> >>
> >> Will `-fno-omit-frame-pointer`
> >
> > This will cost a little.  Though, it usually also helps perf to produce
> > more useful reports.
> >
> >> or apply use github PR patch performance
> >> emacs's performance?
> >
> > The patch should not cost any performance.
> 
> I compiled scratch/igc emacs with  `-fno-omit-frame-pointer`, it crash
> again, and I don't know how to reproduce.

Please show the value of system-configuration-options, so that we are
sure the switch was indeed noted.

Also, I would suggest to rebuild with -O2, since -O3e could perform
other unsafe optimizations.