bug#21428: 24.5; Crash of emacs on OS X, installed via homebrew cask

[Rainer M Krug <Rainer@krugs.de>]

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Eli Zaretskii <eliz@gnu.org> writes:

>> Date: Thu, 22 Oct 2015 22:04:08 +0200
>> From: Anders Lindgren <andlind@gmail.com>
>> Cc: Eli Zaretskii <eliz@gnu.org>, Rainer@krugs.de, 21428@debbugs.gnu.org
>> 
>> However, I noticed that a number of NextStep callback functions start with the
>> following code sequence:
>> 
>> if (!emacsframe->output_data.ns)
>> return;
>> 
>> If `ns' is NULL it would account for the crash. I don't see why we can't add it
>> to the windowDidResize: method as well.
>> 
>> Finally a reservation, I'm still learning the NS code base and I don't know
>> under which circumstances the `ns' field is NULL.
>
> Based on what happens in other GUI display backends, I'm guessing that
> 'ns' being NULL means the frame is not a GUI frame, but either a
> text-mode frame or the "initial" frame (the latter happens in batch
> mode and in the daemon mode, assuming the NS port supports it).

Also, I did not start emacs as daemon. I started it from gdb using:

,----
| gdb-7 ./nextstep/Emacs.app/Contents/MacOS/Emacs
`----

Rainer

-- 
Rainer M. Krug, PhD (Conservation Ecology, SUN), MSc (Conservation Biology, UCT), Dipl. Phys. (Germany)

Centre of Excellence for Invasion Biology
Stellenbosch University
South Africa

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