GNU bug report logs - #21428
24.5; Crash of emacs on OS X, installed via homebrew cask

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Rainer M Krug <Rainer <at> krugs.de>
Cc: mituharu+bug-gnu-emacs-mac <at> math.s.chiba-u.ac.jp, 21428 <at> debbugs.gnu.org
Subject: bug#21428: 24.5; Crash of emacs on OS X, installed via homebrew cask
Date: Tue, 29 Sep 2015 10:22:00 +0300

> From: Rainer M Krug <Rainer <at> krugs.de>
> Cc: 21428 <at> debbugs.gnu.org,  mituharu+bug-gnu-emacs-mac <at> math.s.chiba-u.ac.jp
> Date: Tue, 29 Sep 2015 08:58:47 +0200
> 
> I did the following to get the value of it->method - is this correct?
> 
> ,----
> | (gdb) fram 2
> | #2  0x000000010008e4e6 in push_prefix_prop (it=0x7fff5fbf7f18, prop=4591275764) at xdisp.c:19809
> | 19809	  eassert (it->method == GET_FROM_BUFFER
> | (gdb) print it->method
> | $1 = GET_FROM_IMAGE
> | (gdb)
> `----

Yes, this is correct (and the result is rather surprising).

> I'll leave the session open - please let me know what you need.

Please show the results of these commands:

  (gdb) p it->sp
  (gdb) p it->stack[it->sp - 1].method
  (gdb) p it->stack[it->sp - 1].current

If it->sp is greater than 1, repeat the last 2 commands for the values
it->sp - 2, it->sp - 3, etc.

  (gdb) pgrowx it->glyph_row
  (gdb) p it->object
  (gdb) xtype

If the last command says "Lisp_String", follow it with

  (gdb) xstring

Thanks.

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