[Octave-bug-tracker] [bug #45209] parser assertion failure and crash when "echo on all" is used

[Mike Miller]

URL:
  <http://savannah.gnu.org/bugs/?45209>

                 Summary: parser assertion failure and crash when "echo on
all" is used
                 Project: GNU Octave
            Submitted by: mtmiller
            Submitted on: Thu 28 May 2015 11:48:58 PM EDT
                Category: Interpreter
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Crash
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: GNU/Linux

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Details:

Octave's parser panics and crashes when "echo on all" is used to display the
contents of m-file functions as they are executed. Example with pack, which is
a trivial noop function:


octave:1> pack
octave:2> more off
octave:3> echo on all
octave:4> pack
+ ## Copyright (C) 1999-2015 John W. Eaton
+ ##
+ ## This file is part of Octave.
+ ##
+ ## Octave is free software; you can redistribute it and/or modify it
+ ## under the terms of the GNU General Public License as published by
+ ## the Free Software Foundation; either version 3 of the License, or (at
+ ## your option) any later version.
+ ##
+ ## Octave is distributed in the hope that it will be useful, but
+ ## WITHOUT ANY WARRANTY; without even the implied warranty of
+ ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ ## General Public License for more details.
+ ##
+ ## You should have received a copy of the GNU General Public License
+ ## along with Octave; see the file COPYING.  If not, see
+ ## <http://www.gnu.org/licenses/>.
+ 
+ ## -*- texinfo -*-
+ ## @deftypefn {Function File} {} pack ()
+ ## Consolidate workspace memory in @sc{matlab}.
+ ##
+ ## This function is provided for compatibility, but does nothing in Octave.
+ ## @seealso{clear}
+ ## @end deftypefn
+ 
+ ## Author: jwe
+ 
+ function pack ()
r��: ../../libinterp/parse-tree/pt-pr-code.cc:1205: void
tree_print_code::indent(): Assertion `curr_print_indent_level >= 0' failed.
panic: Aborted -- stopping myself...
attempting to save variables to 'octave-workspace'...
save to 'octave-workspace' complete
Aborted





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