[Octave-bug-tracker] [bug #65158] SVD called on complex matrices causes Octave to crash

[Ming]

URL:
  <https://savannah.gnu.org/bugs/?65158>

                 Summary: SVD called on complex matrices causes Octave to
crash
                   Group: GNU Octave
               Submitter: enzo0706
               Submitted: Sat 13 Jan 2024 09:56:43 AM UTC
                Category: Octave Function
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Segfault, Bus Error, etc.
                  Status: None
             Assigned to: None
         Originator Name: 
        Originator Email: 
             Open/Closed: Open
                 Release: 8.4.0
         Discussion Lock: Any
        Operating System: Microsoft Windows
           Fixed Release: None
         Planned Release: None


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Follow-up Comments:


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Date: Sat 13 Jan 2024 09:56:43 AM UTC By: Ming <enzo0706>
When the SVD function is called on a 256*256 complex matrix, it causes the
octave to crash due to segmentation fault.

The basic tests are as follows:

octave:1> [u, s, v] = svd(rand(256));
octave:2> [u, s, v] = svd(rand(128) + 1i * rand(128));
octave:3> [u, s, v] = svd(rand(256) + 1i * rand(256));
fatal: caught signal Segmentation fault -- stopping myself...
PS C:\Program Files\GNU Octave\Octave-8.4.0\mingw64\bin>

256*256 real - OK
128*128 complex - OK
256*256 complex - CRASH

It works fine on previous versions (like 7.x), but also crashes on 8.3.0.







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