[Octave-bug-tracker] [bug #36749] contour causes abort with certain input

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?36749>

                 Summary: contour causes abort with certain input
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Fri 29 Jun 2012 03:16:28 PM UTC
                Category: Plotting
                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: 3.2.4
        Operating System: GNU/Linux

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Details:

contourf() failed with what I believe to be valid input. I noticed it failed
in an if statement which only ran if the plot was filled, so I tried contour()
and Octave aborted.

This is running on Ubuntu 12.04 inside VirtualBox with a Windows XP host.

Steps to reproduce and output:

octave:1> load("crash");
octave:2> contourf(d2(:,1), d2(:,2), d2(:,4));
error: subscript indices must be either positive integers or logicals.
error: called from:
error:   /usr/share/octave/3.2.4/m/plot/__contour__.m at line 109, column 8
error:   /usr/share/octave/3.2.4/m/plot/contourf.m at line 73, column 5
octave:2> contour(d2(:,1), d2(:,2), d2(:,4));
octave: malloc.c:3683: __libc_malloc: Assertion `!victim ||
((((mchunkptr)((char*)(victim) - 2*(sizeof(size_t)))))->size & 0x2) || ar_ptr
== (((((mchunkptr)((char*)(victim) - 2*(sizeof(size_t)))))->size & 0x4) ?
((heap_info *)((unsigned long)(((mchunkptr)((char*)(victim) -
2*(sizeof(size_t))))) & ~((2 * (512 * 1024))-1)))->ar_ptr : &main_arena)'
failed.
panic: Aborted -- stopping myself...
attempting to save variables to `octave-core'...
save to `octave-core' complete
Aborted




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File Attachments:


-------------------------------------------------------
Date: Fri 29 Jun 2012 03:16:28 PM UTC  Name: crash  Size: 20kB   By: None

<http://savannah.gnu.org/bugs/download.php?file_id=26120>
-------------------------------------------------------
Date: Fri 29 Jun 2012 03:16:28 PM UTC  Name: octave-core  Size: 29kB   By:
None

<http://savannah.gnu.org/bugs/download.php?file_id=26121>

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