[Octave-bug-tracker] [bug #64446] Sparse QR segfaults with SuiteSparse 7 on 32-bit architectures

[Sébastien Villemot]

Follow-up Comment #6, bug #64446 (project octave):

[(Erreur - Introuvable)]
As a temporary solution, I’ve disabled SPQR usage for 32-bit architectures
in Debian.

Note that I had to apply the following patch to make it compile, that you
probably want in the hg repository:
https://salsa.debian.org/pkg-octave-team/octave/-/blob/debian/latest/debian/patches/suitesparse7-part2.patch

I’m not sure I understand your last point about the extent of the breakage.
For sure there is an ABI change in many suitesparse functions for 32-bit
architectures, but that’s normally not a problem if the source code uses the
correct types. Anyways, that discussion is probably off-topic for the present
bug report (but I’d still be interested in understanding it better, perhaps
in another venue).

Also, my understanding is that suitesparse upstream is working on a fix for
this issue (providing a 32-bit SPQR flavour). Maybe that will call for a
change in the Octave source code to make use of it. Feel free to either close
the present bug report, or to keep it open to track this issue until a proper
fix is on the way.



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