#8211: bug in multiplication of polynomials over RR
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Reporter: dimpase | Owner: malb
Type: defect | Status: new
Priority: major | Milestone: sage-4.3.3
Component: commutative algebra | Keywords: RealField, PolynomialRing
Author: Dima Pasechnik | Upstream: N/A
Reviewer: | Merged:
Work_issues: |
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as reported on sage-devel [Segfault: Polynomials over RealField]
sage: P.<x> = PolynomialRing(RealField())
sage: P(0)*P(0)+P(0)
Program received signal SIGSEGV, Segmentation fault.
it can be traced down to a bug in _mul_ that computes the degree
of the polynomial P(0)*P(0) wrongly (-2 istead of -1 !)
Patch is trivial, and attached.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/8211>
Sage <http://www.sagemath.org>
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