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

[Eli Zaretskii]

> From: Rainer M Krug <Rainer@krugs.de>
> Cc: 21428@debbugs.gnu.org,  mituharu+bug-gnu-emacs-mac@math.s.chiba-u.ac.jp
> Date: Mon, 28 Sep 2015 13:27:09 +0200
> 
> Didn't take long - if I followed the process described correctly, it did
> not help - I had another two crashes, although they look in the
> backtrace different then before:
> 
> ,----
> | xdisp.c:19795: Emacs fatal error: assertion failed: it->method == 
> GET_FROM_BUFFER || it->method == GET_FROM_DISPLAY_VECTOR || it->method == 
> GET_FROM_STRING
> | 
> | Breakpoint 1, terminate_due_to_signal (sig=6, backtrace_limit=2147483647) 
> at emacs.c:370
> | 370   signal (sig, SIG_DFL);
> | (gdb) bt
> | #0  terminate_due_to_signal (sig=6, backtrace_limit=2147483647) at 
> emacs.c:370
> | #1  0x0000000100229e5b in die (msg=0x1003ba0d8 "it->method == 
> GET_FROM_BUFFER || it->method == GET_FROM_DISPLAY_VECTOR || it->method == 
> GET_FROM_STRING", file=0x1003b7100 "xdisp.c", line=19795) at alloc.c:6951
> | #2  0x000000010008e6b6 in push_prefix_prop (it=0x7fff5fbf34f8, 
> prop=4615950900) at xdisp.c:19793

What is the value of it->method in frame #2?