bug#18925: On Mac emacs -nw crashes, emacs doesn't

[Eli Zaretskii]

> From: David Kanter <kanterdj@gmail.com>
> Date: Sun, 02 Nov 2014 11:56:06 -0500
> 
> I track emacs-24 using bzr on my Mac, and build Emacs.app using
> --with-ns. Over the last few days emacs -nw crashes on startup, but the
> NeXTstep emacs works fine.
> 
> When I start emacs -nw at the terminal, I get
> 
> Fatal error 11: Segmentation faultAbort
> 
> and come back to the prompt. Below is the crash report generated by the
> Mac. (I don't think I can do report-emacs-bug if Emacs doesn't start,
> right?)

You can report-emacs-bug from a GUI session.

> Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
> 0   libsystem_kernel.dylib            0x00007fff8d394292 __kill + 10
> 1   org.gnu.Emacs                     0x00000001000b82f4 
> terminate_due_to_signal + 148 (emacs.c:378)
> 2   org.gnu.Emacs                     0x00000001000d5733 emacs_abort + 19
> 3   org.gnu.Emacs                     0x00000001001a736c ns_term_shutdown + 
> 124
> 4   org.gnu.Emacs                     0x00000001000b84eb shut_down_emacs + 
> 283 (emacs.c:2054)
> 5   org.gnu.Emacs                     0x00000001000b82b9 
> terminate_due_to_signal + 89 (emacs.c:363)
> 6   org.gnu.Emacs                     0x00000001000d7066 
> deliver_fatal_thread_signal + 134
> 7   libsystem_platform.dylib          0x00007fff913b25aa _sigtramp + 26
> 8   ???                               000000000000000000 0 + 0
> 9   org.gnu.Emacs                     0x00000001000266da redisplay_internal + 
> 7258 (xdisp.c:13957)

What is on line 13957 of xdisp.c in the sources used to build this
binary?  I'm asking because in the sources I have here, that line
says:

                 if (interrupt_input)

which cannot possibly segfault.