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[Octave-bug-tracker] [bug #39000] mldivide crashes with DLASD4 parameter


From: Clemens Buchacher
Subject: [Octave-bug-tracker] [bug #39000] mldivide crashes with DLASD4 parameter error
Date: Wed, 15 May 2013 16:07:25 +0000
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:20.0) Gecko/20100101 Firefox/20.0

URL:
  <http://savannah.gnu.org/bugs/?39000>

                 Summary: mldivide crashes with DLASD4 parameter error
                 Project: GNU Octave
            Submitted by: drizzd
            Submitted on: Wed 15 May 2013 04:07:23 PM GMT
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Crash
                  Status: None
             Assigned to: None
         Originator Name: Clemens Buchacher
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Microsoft Windows

    _______________________________________________________

Details:

With my MXE build of the development branch I get this crash with the attached
file.

% crashme.m
xy = load('xy.txt');
x = xy.x;
y = xy.y;
z = x\y;

> crashme
warning: matrix singular to machine precision, rcond = 1.57068e-020
 ** On entry to DLASD4 parameter number -1 had an illegal value

Where:
> size(xy.x)
ans =

   350   350

> size(xy.y)
ans =

   350     1

Does not happen with the 3.6.4 mingw build from the wiki:

> crashme
warning: matrix singular to machine precision, rcond = 8.43218e-021



    _______________________________________________________

File Attachments:


-------------------------------------------------------
Date: Wed 15 May 2013 04:07:23 PM GMT  Name: xy.dat.tar.gz  Size: 12kB   By:
drizzd

<http://savannah.gnu.org/bugs/download.php?file_id=28088>

    _______________________________________________________

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