xemacs 21.4.22_4 crash when entering font-lock-mode

[basmac]

The xemacs builds fine without error, Mac 10.7.2 latest everything

bash-3.2# port installed xemacs
The following ports are currently installed:
  xemacs @21.4.22_4 (active)
bash-3.2# 

Starts up fine, then crashes all the time using the following sequence

ESC X
font-lock-mode

[mac27:~] bmcinnes% xemacs

Fatal error (11).

Your files have been auto-saved.
Use `M-x recover-session' to recover them.

Your version of XEmacs was distributed with a PROBLEMS file that  may describe
your crash, and with luck a workaround.  Please check it first, but do report
the crash anyway.  Please report this bug by invoking M-x report-emacs-bug,
or by selecting `Send Bug Report' from the Help menu.  If necessary, send
ordinary email to `xemacs-beta@xemacs.org'.  *MAKE SURE* to include the XEmacs
configuration from M-x describe-installation, or equivalently the file
Installation in the top of the build tree.

*Please* try *hard* to obtain a C stack backtrace; without it, we are unlikely
to be able to analyze the problem.  Locate the core file produced as a result
of this crash (often called `core' or `core.<process-id>', and located in
the directory in which you started XEmacs or your home directory), and type

  gdb /opt/local/bin/xemacs core

then type `where' at the debugger prompt.  No GDB on your system?  You may
have DBX, or XDB, or SDB.  (Ask your system administrator if you need help.)
If no core file was produced, enable them (often with `ulimit -c unlimited'
in case of future recurrance of the crash.

Lisp backtrace follows:

  dispatch-non-command-events()
  # (condition-case ... . ((nil)))
  progress-feedback-dispatch-non-command-events()
  # bind (tmsg top frame value message label)
  append-progress-feedback(font-lock "Fontifying *scratch*..." 0 nil)
  # bind (frame value message label)
  display-progress-feedback(font-lock "Fontifying *scratch*..." 0)
  # bind (str)
  # (unwind-protect ...)
  # bind (args value fmt label)
  progress-feedback-with-label(font-lock "Fontifying %s..." 0 "*scratch*")
  # bind (maybe-loudly end beg)
  font-lock-default-unfontify-region(1 198 t)
  # bind (loudly end beg)
  font-lock-unfontify-region(1 198 t)
  # bind (was-on font-lock-verbose font-lock-message-threshold aborted)
  # (unwind-protect ...)
  font-lock-default-fontify-buffer()
  # bind (font-lock-verbose)
  font-lock-fontify-buffer()
  # bind (on-p maximum-size arg)
  font-lock-mode(nil)
  # bind (command-debug-status)
  call-interactively(font-lock-mode)
  command-execute(font-lock-mode t)
  # bind (_execute_command_keys_ _execute_command_name_ prefix-arg)
  execute-extended-command(nil)
  # bind (command-debug-status)
  call-interactively(execute-extended-command)
  # (condition-case ... . error)
  # (catch top-level ...)
Segmentation fault

[basmac]

Works fine under 10.6.8

[mark@…]

Confirmed, similar set up as Barry. I went back a few versions too, but couldn't find one that worked on Lion 10.7.3 :-(

[basmac]

Replying to mark@…:

Confirmed, similar set up as Barry. I went back a few versions too, but couldn't find one that worked on Lion 10.7.3 :-(

Sent information and coredump to xemacs-beta as requested above.

[basmac]

The recommended fix is from xemacs-beta

To avoid the segfault,

M-x customize-variable RET progress-feedback-use-echo-area RET

and set it to t.

[ryandesign (Ryan Carsten Schmidt)]

Has duplicate #33614.

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