#10100: Segfault calling change_ring(RR) on a symbolic polynomial
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Reporter: davidloeffler | Owner: burcin
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.7.1
Component: symbolics | Keywords:
Work_issues: | Upstream: N/A
Reviewer: Volker Braun | Author: Mike Hansen
Merged: | Dependencies:
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Changes (by vbraun):
* status: positive_review => needs_work
Comment:
To allow Ctrl-C? The constructor takes a list of coefficients, not just a
degree. So its not so easy to construct astronomically-sized polynomials.
You can, however, pass a generator object that will be expanded into a
list.
I'll append a patch that adds `sig_on()` and `sig_off()` around the
expansion into a list and the loop that converts to RR. Allocating mpfr
memory is comparably quick and sits in-between the two more expensive
loops.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10100#comment:6>
Sage <http://www.sagemath.org>
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