[Octave-bug-tracker] [bug #48323] interval package: segmentation fault in qr function

[Oliver Heimlich]

URL:
  <http://savannah.gnu.org/bugs/?48323>

                 Summary: interval package: segmentation fault in qr function
                 Project: GNU Octave
            Submitted by: oheim
            Submitted on: Mon 27 Jun 2016 07:45:02 AM CEST
                Category: Octave Forge Package
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Crash
                  Status: None
             Assigned to: None
         Originator Name: Oliver Heimlich
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.2
        Operating System: GNU/Linux

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Details:

Octave 3.8.2 crashes during BISTs of the new @infsup/qr method. The crash does
not happen in Octave 4.0.2 (tested on GNU/Linux and Windows).

If I added some tracing output, I can see that the crash does not happen
reproducibly at the same spot every time. However, since there are a few BISTs
for that method, chances are very high that it crashes before all tests have
been run. At least in Octave 3.8.2.

For now, could you please try to reproduce the problem? You may clone the
interval repo and use  “make run”. I can also provide a tarball, but that
shouldn't be necessary.


$ make run
Run GNU Octave with the development version of the package
… *SNIP* …
octave:1> test @infsup/qr
warning: mx_el_or: automatic broadcasting operation applied
… *SNIP* ignore the warnings *SNIP* …
warning: mx_el_or: automatic broadcasting operation applied
panic: Segmentation fault -- stopping myself...
Segmentation fault





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