Re: Crash with --enable-checking and some glyphs

[Lars Ingebrigtsen]

Lars Ingebrigtsen <larsi@gnus.org> writes:

> No, of course that wasn't it.  It was --enable-checking.  D'oh.
>
> So I'm now able to reproduce the problem on the faster build machine,
> which should help.  

I assumed that this problem had to be pretty recent, but I'm now back to 

58bdfd7c540c49f3727c517c3599c9d601696caf

(which is December 31sth 2020), and the abort is still there:

xdisp.c:31003: Emacs fatal error: assertion failed: it->ascent >= 0 && 
it->descent >= 0
Fatal error 6: Aborted
Backtrace:
./src/emacs(+0x19d4d1)[0x5628f66344d1]
./src/emacs(+0x50756)[0x5628f64e7756]
./src/emacs(+0x5653e)[0x5628f64ed53e]

So perhaps it's more productive to try to debug it than trying to chase
the problem down, but before I do that: Is anybody else seeing this?

The way to reproduce it is:

./configure --enable-checking
make
./src/emacs /tmp/crash.txt

where that file contains the contents of:

http://quimby.gnus.org/s/crash.txt

I'm reproducing this on Debian/bullseye and Debian/bookworm.

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no