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[Octave-bug-tracker] [bug #45212] linsolve broken in rc3 and rc4


From: anonymous
Subject: [Octave-bug-tracker] [bug #45212] linsolve broken in rc3 and rc4
Date: Fri, 29 May 2015 12:20:16 +0000
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:25.4) Gecko/20150509 Firefox/31.9 PaleMoon/25.4.1

URL:
  <http://savannah.gnu.org/bugs/?45212>

                 Summary: linsolve broken in rc3 and rc4
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Fri 29 May 2015 12:20:13 PM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Regression
                  Status: None
             Assigned to: None
         Originator Name: Christof Köhler
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 4.0.0-rc4
        Operating System: GNU/Linux

    _______________________________________________________

Details:

Hello !

In octave 4.0.0rc3 and 4.0.0rc4 the linsolve function appears to be broken.

Observed behaviour (4.0.0rc3 and 4.0.0rc4):


octave:1> a=[1,2;3,4;]; b=[1;2];
octave:2> linsolve(a,b)
error: 'trans_A' undefined near line 103 column 7
error: called from
    linsolve at line 103 column 3


Expected behaviour (octave 3.8.1 and 4.0.0rc2):


octave:1> a=[1,2;3,4;]; b=[1;2];
octave:2> linsolve(a,b)
ans =

   0.00000
   0.50000


Diff'ing the file "linsolve.m" between 4.0.0rc2 and 4.0.0rc3 I notice several
changes which might have introduced this regression. I noticed it first in
4.0.0rc3 and can confirm that this persists in 4.0.0rc4. For the rc3 and rc4
builds the same compiler and configure options(i.e. only --prefix) have been
used as for the rc2 build where linsolve is ok.

Running a "make check" on the 4.0.0rc3 source code for which I first noticed
the problem returns:


PASS      12612
FAIL          0
XFAIL        15
SKIPPED     302


Best Regards

Christof




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