[Pkg-octave-devel] Bug#340320: octave2.1-headers: mkoctfile generated functions crash randomly

[Teemu Ikonen]

Package: octave2.1-headers
Version: 2.1.72-4
Severity: normal

Oct-functions generated by mkoctfile segfault randomly, but very often. For
example, the following innocent-looking function:

-*-*-*-

#include <octave/oct.h>

DEFUN_DLD(uitest, args, , " ")
{
      int x = 20;
      int y = 20;
	    
      return octave_value(Matrix(y,x));
		  
}
		  
-*-*-*-

produces this when ran repeatedly:

octave:1> uitest();
octave:2> uitest();
octave:3> uitest();
octave:4> uitest();
panic: Segmentation fault -- stopping myself...
attempting to save variables to octave-core'...
save to octave-core' complete
Segmentation fault

I can usually make Octave crash by running uitest less than 10 times.

Since I run a mixed system of testing and unstable, I'm rather certain that
the crashes are caused by some kind of library version mismatch which the
dependencies do not take into account. Octave 2.1.69 from sarge does not
crash with the test above.

I would appreciate any ideas on how to get oct-files working again.

Teemu

-- System Information:
Debian Release: testing/unstable
  APT prefers testing
  APT policy: (650, 'testing'), (600, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Shell:  /bin/sh linked to /bin/bash
Kernel: Linux 2.6.14-1-686
Locale: LANG=en_US.UTF-8, LC_CTYPE=fi_FI.UTF-8 (charmap=UTF-8)

Versions of packages octave2.1-headers depends on:
ii  atlas3-base-dev               3.6.0-20   Automatically Tuned Linear Algebra
ii  fftw3-dev                     3.0.1-14   library for computing Fast Fourier
ii  g++                           4:4.0.2-1  The GNU C++ compiler
ii  gfortran                      4.0.2-1    The GNU Fortran 95 compiler
ii  libhdf5-serial-dev            1.6.4-4    Hierarchical Data Format 5 (HDF5) 
ii  libncurses5-dev               5.5-1      Developer's libraries and docs for
ii  libreadline5-dev              5.0-11     GNU readline and history libraries
ii  octave2.1                     2.1.72-4   GNU Octave language for numerical 

octave2.1-headers recommends no packages.

-- no debconf information