GNU bug report logs - #30874
Displaying char \x274C with Dejavu Sans Mono gives "X protocol error: BadLength (poly request too large or internal Xlib length error) on protocol request 138"

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Jan Synacek <jsynacek <at> redhat.com>
Cc: 30874 <at> debbugs.gnu.org
Subject: bug#30874: 27.0.50; Emacs crashes
Date: Tue, 20 Mar 2018 14:44:36 +0200

> From: Jan Synacek <jsynacek <at> redhat.com>
> Date: Tue, 20 Mar 2018 13:12:53 +0100
> Cc: 30874 <at> debbugs.gnu.org
> 
> > Please show a C-level backtrace from the crash.
> 
> Since the reproducer is so trivial, I didn't consider it important,

It is always important.  I couldn't reproduce this on my system.

> but there you go (just basic backtrace, the full one is hilariously
> huge):

Thanks.  Sounds like a duplicate of bug#30045.

Can you run this in X synchronous mode, so that we see which operation
triggers the original X error?  etc/DEBUG tells how to do that under
"If you encounter X protocol errors".

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