[Octave-bug-tracker] [bug #45947] savepath can create a ~/.octaverc that crashes Octave at startup

[Mike Miller]

URL:
  <http://savannah.gnu.org/bugs/?45947>

                 Summary: savepath can create a ~/.octaverc that crashes
Octave at startup
                 Project: GNU Octave
            Submitted by: mtmiller
            Submitted on: Sat 12 Sep 2015 03:31:28 PM EDT
                Category: Octave Function
                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: Any

    _______________________________________________________

Details:

The savepath() function stores the current load path in ~/.octaverc, but it
stores the path as one long command. If the user's currently configured load
path is *huge*, this will crash Octave on startup.

Test case:


>> d = tempname ();
>> mkdir (d);
>> cd (d);
>> names = char (randi ([64, 90], 1000, 8));
>> for i = 1:rows(names), mkdir (names(i,:)); endfor
>> addpath (genpath (pwd ()));
>> savepath
warning: savepath: current path saved to ~/.octaverc



Now exit and start Octave again. Octave crashes when trying to execute the
long savepath command line with:


error: input buffer overflow, can't enlarge buffer because scanner uses
REJECT
input buffer overflow, can't enlarge buffer because scanner uses REJECT
*** Error in
`/home/mike/src/octave/default/+build-default/src/.libs/lt-octave-cli':
corrupted double-linked list: 0x0000000001060c80 ***
panic: Aborted -- stopping myself...





    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?45947>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/