bug#11350: Nasty hangup

[Antoine Levitt <antoine.levitt@gmail.com>]

26/04/12 15:42, Eli Zaretskii
>> From: Antoine Levitt <antoine.levitt@gmail.com>
>> Date: Thu, 26 Apr 2012 15:21:18 +0200
>> 
>> I'm seeing a very nasty bug, description below. I use bzr trunk and
>> update it quite regularly, but the last commits seem pretty harmless
>> ... the only change I can see in my environment is that I started using
>> org-clock today. The bugs happened when I was working, using python with
>> a comint interaction buffer.
>> 
>> So anyway, when it happens, I get 100% CPU usage, and emacs just
>> hangs. I can only get out of it by sending it a SIGUSR2. In which case
>> it gives out a useless backtrace (saying it's at top level, as if it
>> wasn't doing anything). Once I quit the debugger or access a python
>> buffer, it hangs again. The only solution I have is to kill it.
>> 
>> Sorry I can't provide more information, it only happens sporadically
>> (three times today ...)
>
> There's advice in etc/DEBUG about how to investigate "hangs".  (Search
> for "If the symptom of the bug is that Emacs fails to respond".)  If
> you could follow that advice and post here what you find, that would
> be valuable information.

Thanks for that. Should have thought of it before, I tend to get a bit
panicked when emacs hangs :) I haven't had this bug again, if I do I'll
attach a gdb and see.