bug#51336: 29.0.50; Application not responding

[Alan Third <alan@idiocy.org>]

package emacs
merge 51336 67694
thankyou

On Fri, Jan 12, 2024 at 05:31:49PM +0100, Kirill Korinsky wrote:
> Emacs was frozen (UI) and hasn't response to any command. Before that it had
> happened I'd resized a window.
> 
> I attach and de-attach external screen quite often and it triggers the resize.
> 
> So, when it was frozen I've attached via lldb and get stack traces bellow.
> 
> It is reproducable, not each resize but often enough.
> 
> When it frozen, I need to kill it, otherwise it absolutle useless.
> 
> And this stack trace was obtained from local root d9462e24a967e32d550ee886b5150f0cc78358f6
> 
> (lldb) bt all
> * thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
>   * frame #0: 0x00007ff80d07596a libsystem_kernel.dylib`mach_msg_trap + 10
>     frame #1: 0x00007ff80d075cd8 libsystem_kernel.dylib`mach_msg + 56
>     frame #2: 0x00007ff80d17929d CoreFoundation`__CFRunLoopServiceMachPort + 319
>     frame #3: 0x00007ff80d177928 CoreFoundation`__CFRunLoopRun + 1276
>     frame #4: 0x00007ff80d176d6c CoreFoundation`CFRunLoopRunSpecific + 562
>     frame #5: 0x00007ff815e245e6 HIToolbox`RunCurrentEventLoopInMode + 292
>     frame #6: 0x00007ff815e2434a HIToolbox`ReceiveNextEventCommon + 594
>     frame #7: 0x00007ff815e240e5 HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 70
>     frame #8: 0x00007ff80fbb1f6d AppKit`_DPSNextEvent + 927
>     frame #9: 0x00007ff80fbb062a AppKit`-[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1394
>     frame #10: 0x00007ff80fba2cd9 AppKit`-[NSApplication run] + 586
>     frame #11: 0x0000000104b2449c Emacs`-[EmacsApp run] + 317

OK, I think this is the same as bug#67694, so I'll merge them.

I think we need to revert 6acb3c5b05a7b9fb32a5336e1bb740f527571ae9 as
discussed in that other bug report and re-open bug#65843, if we can.

Unless anyone else has a better idea.
-- 
Alan Third