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Re: Hangs on redisplay_internal

From: Eric Abrahamsen
Subject: Re: Hangs on redisplay_internal
Date: Thu, 13 Jun 2019 15:23:26 -0700
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/27.0.50 (gnu/linux)

Eli Zaretskii <address@hidden> writes:

> On June 3, 2019 8:56:33 AM GMT+03:00, Eric Abrahamsen <address@hidden> wrote:
>> I've been updating master every three or four days, and over the past
>> week (more?) feel like I've been getting a lot of inexplicable hangs.
>> They last as long as five or six seconds, but I can usually quit out
>> of
>> them. I started running with debug on quit as a matter of course, and
>> just managed to kill one of them, and got:
>> Debugger entered--Lisp error: (quit)
>>   redisplay_internal\ \(C\ function\)()
>> That's all that was in *Backtrace*.
>> I'm on Arch Linux, and haven't done anything special to the build
>> process. I know this isn't very helpful, but maybe I can track down
>> something more.
> Run Emacs under GDB, and when Emacs habgs, stop it with SIGTSTP, as
> explained in etc/DEBUG. Then get a more informative backtrace with the
> GDB's "bt" command. Be sure to invoke GDB from the src directory, so
> that it will also show the Lisp backtrace.

And, of course, it never happened again. At least I know what to do now
if it does.

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