#16162: Cantor-Zassenhaus may enter infinite loop over GF(2**k) and cannot be
interrupted
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Reporter: jpflori | Owner:
Type: defect | Status: needs_work
Priority: critical | Milestone: sage-6.3
Component: finite rings | Resolution:
Keywords: finite field | Merged in:
polynomial root factor | Reviewers:
Authors: Jean-Pierre Flori | Work issues:
Report Upstream: N/A | Commit:
Branch: | 27ae9b7af575319e469a9dc5f6dadbd97daeb041
u/jpflori/ticket/16162 | Stopgaps:
Dependencies: |
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Comment (by pbruin):
You should not put anything inside a `sig_on()...sig_off()` block that can
interfere with the Python interpreter. From the code it is not clear (to
me) if that can happen.
Is the `sig_on()...sig_off()` to prevent segfaults, to allow the code to
be interrupted, or both? If it is to prevent segfaults, you have to find
out where this occurs (this can hopefully be narrowed down to pure Cython
code with no calls to the Python interpreter) and wrap this as tightly as
possible in `sig_on()...sig_off()`. If it is to allow Control-C,
`alarm()` etc., you can also periodically check for interrupts (I don't
remember the details right now).
--
Ticket URL: <http://trac.sagemath.org/ticket/16162#comment:15>
Sage <http://www.sagemath.org>
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