#11771: sage crashes on some degenerate flint xgcd's
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Reporter: lftabera | Owner: AlexGhitza
Type: defect | Status: needs_review
Priority: critical | Milestone: sage-4.7.2
Component: basic arithmetic | Keywords: flint, crash, xgcd fmpq_poly
rational polynomials
Work_issues: | Upstream: N/A
Reviewer: | Author: Leif Leonhardy
Merged: | Dependencies:
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Comment(by spancratz):
On second thought, the code in fmpq_poly_canonicalize() is too
embarrassing. I have deleted the bits of code that were commented out,
removed the temporary parameter, which wasn't used anyway, and adjusted
the remaining part of the code in fmpq_poly.c accordingly. This also made
the memory allocations in two or three other places a little cleaner.
What's the best way to proceed?
On my laptop here at home I only have a version of Sage 4.6 and
downloading the latest version of Sage, plus installing it from source etc
might take a little while.
I could either send you the updated versions of fmpq_poly.c and
fmpq_poly.h and then let you make a patch from it etc. The only other
change necessary should be a one-line change in line 26 of fmpq_poly.pxd.
Alternatively, I can attach a patch for those three files based on Sage
4.6. I assume they haven't changed since then?
Best wishes,
Sebastian
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11771#comment:21>
Sage <http://www.sagemath.org>
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