bug#81510: 31.0.90; NS (macOS): clicking a disabled (:enable nil) tab-bar item crases Emacs

On 30/07/2026, Alan Third wrote:

> On Thu, Jul 30, 2026 at 08:56:13PM +0100, Al Haji-Ali wrote:
>> In ns_term, the macro EV_TRAILER2 just checks if the event pointer
>> q_event_ptr is non-nil, regardless of the value of emacs_event.kind.
>
> So something like the attached?

Yes! This fixed the crash that I found.

Can we also check the site in EV_TRAILER2? If q_event_ptr is not NULL,
kbd_buffer_store_event_hold is called immediately and unconditionally
rather than hold_event, so in that case kbd_buffer_store_buffered_event
could be called with NO_EVENT.

On a bigger note: would it be possible to print a message with
information whenever emacs_abort is called, since it is being used as an
assert function? I see that there's a __android_log_print (presumably
for android), though I am not sure what info it ultimately prints.

-- Al