[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Octave-bug-tracker] [bug #56232] Octave crash when inverting an empty s
|
From: |
Dmitri A. Sergatskov |
|
Subject: |
[Octave-bug-tracker] [bug #56232] Octave crash when inverting an empty sparse matrix. |
|
Date: |
Tue, 30 Apr 2019 18:00:01 -0400 (EDT) |
|
User-agent: |
Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:66.0) Gecko/20100101 Firefox/66.0 |
Follow-up Comment #6, bug #56232 (project octave):
It is actually the double difference:
octave:1> C = sparse (ones (2))
C =
Compressed Column Sparse (rows = 2, cols = 2, nnz = 4 [100%])
(1, 1) -> 1
(2, 1) -> 1
(1, 2) -> 1
(2, 2) -> 1
octave:2> a = C - C
a =
Compressed Column Sparse (rows = 2, cols = 2, nnz = 0 [0%])
octave:3> b = a - a
b =
Compressed Column Sparse (rows = 2, cols = 2, nnz = 0 [0%])
octave:4> inv(b)
error: inv: sparse_lu: symbolic factorization failed
octave:4> inv(a)
Thread 10 "QThread" received signal SIGSEGV, Segmentation fault.
...
Dmitri.
--
_______________________________________________________
Reply to this item at:
<https://savannah.gnu.org/bugs/?56232>
_______________________________________________
Message sent via Savannah
https://savannah.gnu.org/