[Octave-bug-tracker] [bug #53330] Hard crash when testing control pkg.

[Doug Stewart]

URL:
  <http://savannah.gnu.org/bugs/?53330>

                 Summary: Hard crash when testing control pkg.
                 Project: GNU Octave
            Submitted by: dastew
            Submitted on: Mon 12 Mar 2018 08:34:02 PM UTC
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Regression
                  Status: None
             Assigned to: None
         Originator Name: doug Stewart
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: dev
        Operating System: Any

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Details:


This is different than a seg. fault. It does not say panic trying to save
etc.

This is probably related to 
http://lists.gnu.org/archive/html/octave-maintainers/2017-01/msg00011.html

This only happens with default and control-3.x.x
To see the first example install control pkg. and then run
test h2syn
or 
test bstmodred



 The crash occures at lin 141 in h2syn.m
   It is a call to a .cc file which then calls a fortran subruotine.
  [ak, bk, ck, dk, rcond] = __sl_sb10hd__ (a, b, c, d, ncon, nmeas);
  The input variables are
  a  double 6x6
  b  double 6x5
  c  double 5x6
  d  double 5x5
  ncon double 1x1            function
  nmeas double 1x1           function


It also occures in line 281 of bstmodred. m 
 [ar, br, cr, dr, nr, hsv, ns] = __sl_ab09hd__ (a, b, c, d, dt, scaled, job,
nr, ordsel, alpha, beta, ...
                                            tol1, tol2);


It also crashes in hinfsyn.m at line 241
       [ak, bk, ck, dk, rcond] = __sl_sb10fd__ (a, b, c, d, ncon, nmeas,
gmax);
 

It also crashes in moen4.m at line 240
  [sys, x0, info] = __slicot_identification__ ("moen4", nargout,
varargin{:});
 
It also crashes in ncfsyn.m at line 383
[AK, BK, CK, DK, RCOND] = __sl_sb10id__ (A, B, C, D, FACTOR);

and at 296 
  [ak, bk, ck, dk, rcond] = __sl_sb10id__ (a, b, c, d, factor);

And probably more places. I stopped testing, and figured that if we fix these
the rest might be fixed.

Any help would be appreciated.
If you tell me what needs changed I can do the rest.

Doug





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