#9564: libsingular exponentiation can not be interrupted
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Reporter: SimonKing | Owner: tba
Type: defect | Status: new
Priority: critical | Milestone: sage-4.6
Component: c_lib | Keywords: KeyboardInterrupt interrupt singular
exception cython
Author: | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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Changes (by jdemeyer):
* keywords: KeyboardInterrupt libsingular exponentiation =>
KeyboardInterrupt interrupt singular
exception cython
Comment:
The problem is the following:
When an interrupt is caught, the program acts as if {{{_sig_on}}} returns
the value 0. So, when using {{{_sig_on}}}, functions should be declared
{{{except 0}}} and not {{{except -1}}}, which is what the Singular
functions do.
The attached patch is purely proof-of-concept showing some improvement
(but it doesn't fully fix the problem).
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9564#comment:3>
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