[Octave-bug-tracker] [bug #42825] Memory corruption in sparse matrix operation

[anonymous]

URL:
  <http://savannah.gnu.org/bugs/?42825>

                 Summary: Memory corruption in sparse matrix operation
                 Project: GNU Octave
            Submitted by: None
            Submitted on: Tue 22 Jul 2014 10:57:40 AM UTC
                Category: None
                Severity: 3 - Normal
                Priority: 5 - Normal
              Item Group: Incorrect Result
                  Status: None
             Assigned to: None
         Originator Name: Chong Yidong
        Originator Email: address@hidden
             Open/Closed: Open
         Discussion Lock: Any
                 Release: 3.8.1
        Operating System: GNU/Linux

    _______________________________________________________

Details:

Run the following:

octave:1> H = spalloc(800,800,10);
octave:2> H(1,401) = 1;
octave:3> H(1,40) = 1i;
octave:4> H(2,21) = 1i;
octave:5> H(1,401)
ans = Compressed Column Sparse (rows = 1, cols = 1, nnz = 1 [100%])

  (1, 1) ->  0 + 1i

Expected result: H(1,401) should be 1.

Observed in Octave 3.8.1 as well as latest hg version (4.1.0+, 22-Jul-2014).





    _______________________________________________________

Reply to this item at:

  <http://savannah.gnu.org/bugs/?42825>

_______________________________________________
  Message sent via/by Savannah
  http://savannah.gnu.org/