bugGNU Octave - Bugs: bug #36137, Running 'test dassl.cc' twice...

 
 

bug #36137: Running 'test dassl.cc' twice creates unrecoverable error

Submitter:  Rik <rik5>
Submitted:  Mon 09 Apr 2012 04:45:03 AM UTC
   
 
Category:  Libraries Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Segfault, Bus Error, etc.
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  * Closed
Release:  * dev Operating System:  * GNU/Linux
Fixed Release:  None Planned Release:  None
* Mandatory Fields

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Thu 20 Jun 2013 01:05:13 AM UTC, comment #1: 

Fixed by changing the test code to restore the tolerance to a proper value rather than eps().  See this changeset (http://hg.savannah.gnu.org/hgweb/octave/rev/781916090eb1).

Rik <rik5>
Group administrator
Mon 09 Apr 2012 04:45:03 AM UTC, original submission:  

When using run-octave in a development directory, executing 'test dassl.cc' creates an unrecoverable error.

Test code:


test dassl.cc
PASSES 4 out of 4 tests
test dassl.cc

test dassl.cc
 ***MESSAGE FROM ROUTINE DDASSL IN LIBRARY SLATEC.
 ***POTENTIALLY RECOVERABLE ERROR, PROG ABORTED, TRACEBACK REQUESTED
 *  AT T =    0.000000D+00  AND STEPSIZE H =    3.925231D-18  THE ITERATION
 *  MATRIX IS SINGULAR
 *  ERROR NUMBER = -8
 *
 ***END OF MESSAGE

 ***JOB ABORT DUE TO UNRECOVERED ERROR.
0          ERROR MESSAGE SUMMARY
 LIBRARY    SUBROUTINE MESSAGE START             NERR     LEVEL     COUNT
 SLATEC     DDASSL     AT T =    0.000000D+        -8         1         1

  ***** test

 x0 = [1; 0];
 xdot0 = [-10; 10];
 t = (0:0.2:1)';

 tol = 500 * dassl_options ("relative tolerance");

 [x, xdot] = dassl ("__f", x0, xdot0, t);

 y = [exp(-10*t), 1-exp(-10*t)];

 assert (x, y, tol);
!!!!! test failed
exception encountered in Fortran subroutine ddassl_



Rik <rik5>
Group administrator

 

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    Follow 2 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2013-06-20 rik5 StatusNone Fixed
        Open/ClosedOpen Closed

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