23.0.50; clone-indirect-object-other-window segfaults

23.0.50; clone-indirect-object-other-window segfaults

[Eric Hanchrow]

Please write in English if possible, because the Emacs maintainers
usually do not have translators to read other languages for them.

Your bug report will be posted to the emacs-pretest-bug@gnu.org mailing list.

Please describe exactly what actions triggered the bug
and the precise symptoms of the bug:

$ cd ...emacs-cvs/src
$ gdb emacs
DISPLAY = :0.0
TERM = screen
Breakpoint 1 at 0x80f6316: file emacs.c, line 431.
Breakpoint 2 at 0x810fd23: file sysdep.c, line 1435.
(gdb) run -Q -nw -e 'clone-indirect-buffer-other-window'
Starting program: /usr/local/src/emacs-cvs-trunk/src/emacs -Q -nw -e 'clone-indirect-buffer-other-window'
[Thread debugging using libthread_db enabled]
[New Thread -1220732608 (LWP 7514)]
[Switching to Thread -1220732608 (LWP 7514)]
Program received signal SIGSEGV, Segmentation fault.
0x0816da99 in print_object (obj=1, printcharfun=137537785, escapeflag=1) at print.c:1678
warning: Source file is more recent than executable.
1678		    }
(gdb) bt full
#0  0x0816da99 in print_object (obj=1, printcharfun=137537785, escapeflag=1) at print.c:1678
	end = <value optimized out>
	c = <value optimized out>
	i_byte = <value optimized out>
	confusing = <value optimized out>
	p = <value optimized out>
	size_byte = <value optimized out>
	buf = "\277v\265\026\b\330\222\313\277\001\000\000\000\000\000\000\000\001\000\000\000\314\222\313\277\023\000\000\000\000\000\000\000\177\003\377\377 \001\377"
#1  0x0816de75 in print_object (obj=140829764, printcharfun=137537785, escapeflag=1) at print.c:2062
	i = 0
	size = 10
	buf = "\277\017$\021\b\341\2724\bD%3\b\001\000\000\000\001\000\000\000X\322Y\b\001\000\000\0008\225\313\277\001\000\000\000\371\2502"
#2  0x0817061a in Fprin1 (object=140829764, printcharfun=137537785) at print.c:775
	marker_pos = -1077176932
	old = (struct buffer *) 0x8332540
	old_point = -1
	start_point = -1
	old_point_byte = -1
	start_point_byte = -1
	free_print_buffer = 0
	multibyte = 1
#3  0x08170bd9 in print_error_message (data=139229389, stream=137537785, context=0xbfcb963a "", 
    caller=138045841) at print.c:1138
	obj = 0
	errname = 137604449
	errmsg = 137606003
	file_error = 137537737
	tail = <value optimized out>
	i = 1
#4  0x080fe593 in cmd_error_internal (data=139229389, context=0xbfcb963a "") at keyboard.c:1348
No locals.
#5  0x080fe68d in cmd_error (data=0) at keyboard.c:1285
	old_level = 137537737
	old_length = 137537737
	macroerror = "\000\000\000\000\000\000\000\000\000\000X\226\313\277\260\225\313\277\000\000\000\000\000\000\000\000\311\2502\b\201@<\b\000\000\000\000\001\000\000\000\001\000\000\000x\226\313\277"
#6  0x0815be71 in internal_condition_case (bfun=0x80f8edf <top_level_2>, handlers=137604401, 
    hfun=0x80fe5dc <cmd_error>) at eval.c:1483
	val = <value optimized out>
	c = {
  tag = 137537737, 
  val = 139229389, 
  next = 0xbfcb97a0, 
  gcpro = 0x0, 
  jmp = {{
      __jmpbuf = {0, 1, 1, -1077176472, -1077176704, 135642637}, 
      __mask_was_saved = 0, 
      __saved_mask = {
        __val = {3217790680, 135560723, 3217790916, 140101024, 13, 13, 3217790916, 3217790930, 
          3217790728, 135561150, 3217790916, 13, 3217790716, 3217790712, 0, 136030220, 13, 13, 0, 1, 
          3217790760, 135561219, 3217790916, 13, 78, 3217791176, 0, 1, 3217791176, 135609779, 
          3217790916, 139899411}
      }
    }}, 
  backlist = 0x0, 
  handlerlist = 0x0, 
  lisp_eval_depth = 0, 
  pdlcount = 2, 
  poll_suppress_count = 1, 
  interrupt_input_blocked = 0, 
  byte_stack = 0x0
}
	h = {
  handler = 137604401, 
  var = 137537737, 
  chosen_clause = 137537785, 
  tag = 0xbfcb968c, 
  next = 0x0
}
#7  0x080f8f24 in top_level_1 () at keyboard.c:1420
No locals.
#8  0x0815bb4e in internal_catch (tag=0, func=0x80f8ef4 <top_level_1>, arg=137537737) at eval.c:1229
	c = {
  tag = 137586673, 
  val = 137537737, 
  next = 0x0, 
  gcpro = 0x0, 
  jmp = {{
      __jmpbuf = {0, 1, 1, -1077176216, -1077176432, 135641921}, 
      __mask_was_saved = 0, 
      __saved_mask = {
        __val = {942878009, 54, 0 <repeats 12 times>, 540091136, 1162170960, 137722482, 137722480, 
          137725600, 3217791048, 135579704, 137725601, 137722482, 137537737, 137569600, 137537761, 
          2, 0, 137725600, 137725601, 137537737, 3217791112}
      }
    }}, 
  backlist = 0x0, 
  handlerlist = 0x0, 
  lisp_eval_depth = 0, 
  pdlcount = 2, 
  poll_suppress_count = 1, 
  interrupt_input_blocked = 0, 
  byte_stack = 0x0
}
#9  0x080f8cc2 in command_loop () at keyboard.c:1375
No locals.
#10 0x080f8d7e in recursive_edit_1 () at keyboard.c:991
	val = <value optimized out>
#11 0x080f8e98 in Frecursive_edit () at keyboard.c:1053
	buffer = 137537737
#12 0x080f7ce7 in main (argc=5, argv=0xbfcb9ce4) at emacs.c:1778
	tz = 0x0
	dummy = -1077175208
	stack_bottom_variable = 8 '\b'
	do_initial_setlocale = 1
	skip_args = 1
	rlim = {
  rlim_cur = 8388608, 
  rlim_max = 18446744073709551615
}
	no_loadup = 0
	junk = 0x0
(gdb) xbacktrace 
(gdb) 

If Emacs crashed, and you have the Emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/usr/local/src/emacs-cvs-trunk/etc/DEBUG for instructions.

In GNU Emacs 23.0.50.1 (i686-pc-linux-gnu, GTK+ Version 2.8.20)
 of 2007-10-11 on debian
configured using `configure  '--enable-maintainer-mode''

Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Major mode: Shell

Minor modes in effect:
  erc-autojoin-mode: t
  erc-match-mode: t
  erc-log-mode: t
  erc-services-mode: t
  recentf-mode: t
  display-time-mode: t
  shell-dirtrack-mode: t
  iswitchb-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
ESC x r e p o r t - e m a c s - b u g RET

Recent messages:
Loading /home/erich/.recentf...done
Cleaning up the recentf list...done (0 removed)
I guess we don't have tabbar available.
Loading /home/erich/.emacs.d/erc-stuff.el (source)...done
Loading /home/erich/.emacs.d/mwolsons-erc-timestamp-stuff.el (source)...done
Loading /home/erich/.environment.el (source)...done
I guess we don't have amz-common available.
Loading /home/erich/.emacs.d/elpa/package.el (source)...done
I guess we don't have xml-rpc available.
For information about GNU Emacs and the GNU system, type C-h C-a.

-- 
When I just need to kick back after a long day of changing 1.s
into 0.s and 0.s into 1.s, nothing satisfies my primal fish urge
better than a can of Genova [tuna].
        -- Ben Collins-Sussman

Re: 23.0.50; clone-indirect-object-other-window segfaults

[Eric Hanchrow]

Eric Hanchrow <offby1 <at> blarg.net> writes:

I tried again with a more recent trunk, and the problem didn't happen.

Re: 23.0.50; clone-indirect-object-other-window segfaults

[Eric Hanchrow]

Note that I tried again with a more recent CVS trunk, and the problem
did not recur.
-- 
[Dijkstra's] great strength is that he is uncompromising.  It
would make him physically ill to think of programming in C++.
        -- Donald E. Knuth