Subject: bug#21965: 24.5; Emacs freezes when canceling at open file

From: Eli Zaretskii <[email-masked]>
Date: Tue, 24 Nov 2015 05:39:22 +0200

> Date: Mon, 23 Nov 2015 16:30:59 -0800
> From: Maneesh Yadav <[email-masked]>
> Cc: Eli Zaretskii <[email-masked]>, [email-masked]
> 
> I don't understand the apple framework/glib event handling structure
> and I doubt this is terribly informative, but for the sake of
> completeness the output of 'thread list' is pasted below:
> 
> (lldb) thread list
> 
> Process 23166 stopped
> 
> * thread #1: tid = 0x4d18b, 0x00007fff8a861166
> libsystem_kernel.dylib`__psynch_mutexwait + 10, queue =
> 'com.apple.main-thread', stop reason = signal SIGSTOP
> 
>   thread #2: tid = 0x4d18c, 0x00007fff8a8613fa
> libsystem_kernel.dylib`__select + 10, name = 'gmain'
> 
> (lldb)

Where did that STOP signal come from?  Could that be the debugger
itself?