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

[Lachlan Andrew]

Follow-up Comment #3, bug #42825 (project octave):

The attached changeset seem to fix the problem.  The code segment to make room
for the new data was using std::copy instead of std::copy_backward.

I have no idea why the bug didn't show up if the initial assignment was
complex, or indeed why this bug didn't show up more often.

I think that bugs like this that produce totally erroneous results with no
error deserve their own item group.  It is really important to be able to
trust the numbers that Octave produces; that is even more important than not
segfaulting.

(file #35953)
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Additional Item Attachment:

File name: bug_42825.cset                 Size:1 KB


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