Re: Strange lockup with metacity

[Jonathan Corbet]

Jan Djärv <address@hidden> wrote:

> Can you start emacs from inside gdb and do a ctrl-c and a backtrace in gdb
> when the lockup occurs (see etc/DEBUG)?  For this to work you have to start
> gdb from outside X11, like another virtual console, and give the -d argument
> to emacs explicitly.
> 
> It may be that Emacs is looping, then follow the advice about looping in
> etc/DEBUG.

Emacs is not looping - neither is metacity.  Everything just stops.

For the following I did:

        run "emacs -Q"
        attempt to resize the window using alt+mouse-middle

the trace is this:

(gdb) bt
#0  0x00000034036c6913 in __select_nocancel () from /lib64/libc.so.6
#1  0x000000000054ec67 in wait_reading_process_output (time_limit=30, 
microsecs=0, 
    read_kbd=-1, do_display=1, wait_for_cell=10361233, wait_proc=0x0, 
    just_wait_proc=0) at process.c:4565
#2  0x0000000000411559 in sit_for (timeout=240, reading=1, do_display=1)
    at dispnew.c:6539
#3  0x00000000004be511 in read_char (commandflag=1, nmaps=2, 
maps=0x7fffb4101be0, 
    prev_event=10361233, used_mouse_menu=0x7fffb4101cf0, end_time=0x0)
    at keyboard.c:2878
#4  0x00000000004c0542 in read_key_sequence (keybuf=0x7fffb4101d70, bufsize=30, 
    prompt=10361233, dont_downcase_last=0, can_return_switch_frame=1, 
    fix_current_buffer=1) at keyboard.c:8969
#5  0x00000000004c222a in command_loop_1 () at keyboard.c:1603
#6  0x000000000051b184 in internal_condition_case (bfun=0x4c2080 
<command_loop_1>, 
    handlers=10442081, hfun=0x4bc310 <cmd_error>) at eval.c:1481
#7  0x00000000004bb63a in command_loop_2 () at keyboard.c:1326
#8  0x000000000051b287 in internal_catch (tag=<value optimized out>, 
    func=0x4bb620 <command_loop_2>, arg=10361233) at eval.c:1222
#9  0x00000000004bc14a in command_loop () at keyboard.c:1305
#10 0x00000000004bc50a in recursive_edit_1 () at keyboard.c:1003
#11 0x00000000004bc609 in Frecursive_edit () at keyboard.c:1064
#12 0x00000000004b132b in main (argc=2, argv=0x7fffb4102618) at emacs.c:1794


Info generated from "report-emacs-bug" is:

In GNU Emacs 22.0.91.1 (x86_64-unknown-linux-gnu, GTK+ Version 2.10.6)
 of 2006-11-27 on bike.lwn.net
X server distributor `The X.Org Foundation', version 11.0.70101000
configured using `configure '--with-x-toolkit=gtk''

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: en_US.UTF-8
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Major mode: Lisp Interaction

Minor modes in effect:
  tooltip-mode: t
  tool-bar-mode: t
  mouse-wheel-mode: t
  menu-bar-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  blink-cursor-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  line-number-mode: t

Recent input:
<help-echo> M-x r e p o r t - e m a c s - b u g <r
eturn>

Recent messages:
(src/emacs -Q)
For information about the GNU Project and its goals, type C-h C-p.
Loading emacsbug...
Loading regexp-opt...done
Loading emacsbug...done