#14211: Crash in GiNaC::Number_T::hash()
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Reporter: mjo | Owner: burcin
Type: defect | Status: new
Priority: critical | Milestone: sage-6.5
Component: symbolics | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: | Stopgaps:
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Changes (by jdemeyer):
* milestone: sage-6.4 => sage-6.5
Old description:
> {{{
> sage: pU = vector([0,0])
> sage: pB = vector([2,0])
> sage: f1(tau) = (pU + (tau - 1)*(pB - pU)).row()*(pU + (tau - 1)*(pB -
> pU)).column()
> sage: d = (pB-pU).row()*(pB-pU).column()
> sage: f2(tau) = tau^2 * d + 2*tau*(pU.row()*(pB-pU).column() - d) +
> (pB-2*pU).row()*(pB-2*pU).column()
> sage: f1(x) == f2(x)
> ([4*(tau - 1)^2]) == ([4*tau^2 - 8*tau + 4])
> sage: bool(f1(x) == f2(x))
> terminate called after throwing an instance of 'std::runtime_error'
> what(): Number_T::hash() python function (__hash__) raised exception
> ...
> }}}
New description:
{{{
sage: pU = vector([0,0])
sage: pB = vector([2,0])
sage: f1(tau) = (pU + (tau - 1)*(pB - pU)).row()*(pU + (tau - 1)*(pB -
pU)).column()
sage: d = (pB-pU).row()*(pB-pU).column()
sage: f2(tau) = tau^2 * d + 2*tau*(pU.row()*(pB-pU).column() - d) +
(pB-2*pU).row()*(pB-2*pU).column()
sage: bool(f1(x) == f2(x))
terminate called after throwing an instance of 'std::runtime_error'
what(): Number_T::hash() python function (__hash__) raised exception
------------------------------------------------------------------------
Unhandled SIGABRT: An abort() occurred in Sage.
This probably occurred because a *compiled* component of Sage has a bug
in it and is not properly wrapped with sig_on(), sig_off().
Sage will now terminate.
------------------------------------------------------------------------
}}}
--
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Ticket URL: <http://trac.sagemath.org/ticket/14211#comment:6>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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