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bug#47094: 27.1; emacs dies with XBM display
From: |
Eli Zaretskii |
Subject: |
bug#47094: 27.1; emacs dies with XBM display |
Date: |
Sat, 13 Mar 2021 09:19:17 +0200 |
> Date: Fri, 12 Mar 2021 22:08:10 +0000
> From: Alan Third <alan@idiocy.org>
>
> > > (let* ((w 256)
> > > (h 256)
> > > (s (make-string (* (/ w 8) h) #x55)))
> > > (insert-image (create-image s 'xbm t :width w :height h)))
> >
> > I can reproduce in Emacs 27, but not on the current master branch. So
> > I guess this has been fixed already, and I'm closing the bug.
>
> I can reproduce on the master branch. It looks like a stack overflow
> in xbm_read_bitmap_data.
I did indeed get an infinite recursion on the emacs-27 branch, but not
on master.
> I tried it in a debugger, but the backtrace looks truncated.
Before or after SIGSEGV? If it's after, then it isn't surprising you
get a truncated backtrace.
I think if you see the infinite recursion we should understand why it
happens in the first place, and try to prevent it.