#7382: MonskyWashnitzer segfault
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Reporter: jen | Owner: robertwb
Type: defect | Status: new
Priority: major | Milestone: sage-4.2.1
Component: number theory | Keywords:
Work_issues: | Author:
Reviewer: | Merged:
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So I don't actually *need* matrix_of_frobenius_hyperelliptic of a curve
over an extension field, but I inadvertently passed it in during a
computation and caused a segfault. It would be nice for this to work
(coercion?), since the curve is defined over QQ anyway.
{{{
sage: R.<x> = QQ['x']
sage: H = HyperellipticCurve(x^3-10*x+9)
sage: K = Qp(3,5)
sage: J.<a> = K.extension(x^30-3)
sage: HJ = H.change_ring(J)
sage: import sage.schemes.elliptic_curves.monsky_washnitzer as mw
sage: M_frob, forms = mw.matrix_of_frobenius_hyperelliptic(HJ)
------------------------------------------------------------
Unhandled SIGSEGV: A segmentation fault occured in SAGE.
This probably occured because a *compiled* component
of SAGE has a bug in it (typically accessing invalid memory)
or is not properly wrapped with _sig_on, _sig_off.
You might want to run SAGE under gdb with 'sage -gdb' to debug this.
SAGE will now terminate (sorry).
------------------------------------------------------------
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7382>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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