[Pkg-octave-devel] Bug#340320: marked as done (octave2.1-headers: mkoctfile generated functions crash randomly)
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From: Teemu Ikonen <tpikonen@pcu.helsinki.fi>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: octave2.1-headers: mkoctfile generated functions crash randomly
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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
---------------------------------------
Received: (at 340320-done) by bugs.debian.org; 28 Nov 2005 21:28:46 +0000
>From laboissiere@cbs.mpg.de Mon Nov 28 13:28:46 2005
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Date: Mon, 28 Nov 2005 22:28:41 +0100
From: Rafael Laboissiere <rafael@debian.org>
To: 340320-done@bugs.debian.org
Cc: "Jon H. Davis" <jon@mast.queensu.ca>, help@octave.org,
Teemu Ikonen <tpikonen@pcu.helsinki.fi>
Subject: Re: octave2.1-headers: mkoctfile generated functions crash randomly
Message-ID: <20051128212841.GB25163@laboiss2>
References: <[🔎] 200511221734.jAMHYsSO024104@sender-01.it.helsinki.fi> <20051122203704.GA17750@laboiss2> <1132699301.2816.2.camel@badcat.home.network>
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* Jon H. Davis <jon@mast.queensu.ca> [2005-11-22 17:41]:
> On Tue, 2005-11-22 at 21:37 +0100, Rafael Laboissiere wrote:
> > I confirm the problem here in my sid chroot. Your program crashes in a
> > systematic way producing the following:
> >
> > $ echo 'for i=1:100;printf("%i.",i);fflush(stdout);uitest();end' | octave -qf
> > 1.2.3.4.5.6.7.8.9.panic: Segmentation fault -- stopping myself...
> > attempting to save variables to `octave-core'...
> > save to `octave-core' complete
> > Segmentation fault
>
> Isn't sid in the throes of c++ library changes? Until everything gets
> changed over there might be a chance of a library mismatch creeping in.
Indeed, this seems to be the case. With the octave2.9_2.9.4-8 package in
my up-to-date unstable chroot, the command above works perfectly, no
crashes.
I am therefore closing this bug report. Please, feel free to open it
again if library inconsistencies creep up in unstable.
--
Rafael
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