#13314: segmentation fault with roots over ComplexField
----------------------------------------------------------------+-----------
Reporter: zimmerma |
Owner: burcin
Type: defect |
Status: needs_review
Priority: major |
Milestone: sage-5.3
Component: calculus |
Resolution:
Keywords: | Work
issues:
Report Upstream: Fixed upstream, but not in a stable release. |
Reviewers:
Authors: Paul Zimmermann, Jeroen Demeyer | Merged
in:
Dependencies: |
Stopgaps:
----------------------------------------------------------------+-----------
Changes (by {'newvalue': u'Paul Zimmermann, Jeroen Demeyer', 'oldvalue': u'Paul
Zimmermann'}):
* author: Paul Zimmermann => Paul Zimmermann, Jeroen Demeyer
Old description:
> this was reported to me by Benjamin Dadoun:
> {{{
> sage: CC=ComplexField(128)
> sage: z=polygen(CC, 'z')
> sage: p=340282366920938463463374607431768211457*z^84 -
> 446662175392119146634315708974074167296*z^80 +
> 279189840125316599983095153558720348160*z^76 -
> 110522928999596165272398266482588385280*z^72 +
> 31087466142071580858231009754176552960*z^68 -
> 6606701181888932299640001500276588544*z^64 +
> 1101219301431275611150985571298443264*z^60 -
> 147498447216213728441335387395194880*z^56 +
> 16134143217737051761322600788131840*z^52 -
> 1456690062677843407408776850964480*z^48 +
> 109261914698248556477361418141696*z^44 -
> 6829504668478678587441535778816*z^40 +
> 355736441058167833075415777280*z^36 - 15393873200469425036030115840*z^32
> + 549832294277433090197422080*z^28 - 16038265915694612515651584*z^24 +
> 375931794881970935169024*z^20 - 6911153168471496130560*z^16 +
> 95997158355731169280*z^12 - 947428403886210560*z^8 + 5921977682886976*z^4
> - 17626570956801
> sage: p.roots(ring=CC)
> ---------------------------------------------------------------------------
> RuntimeError Traceback (most recent call
> last)
>
> /users/caramel/bdadoun/Desktop/ceval/<ipython console> in <module>()
>
> /usr/local/sage-5.1-linux-64bit-
> ubuntu_12.04_lts-x86_64-Linux/local/lib/python2\
> .7/site-packages/sage/rings/polynomial/polynomial_element.so in
> sage.rings.poly\
> nomial.polynomial_element.Polynomial.roots
> (sage/rings/polynomial/polynomial_el\
> ement.c:31093)()
>
> /usr/local/sage-5.1-linux-64bit-
> ubuntu_12.04_lts-x86_64-Linux/local/lib/python2\
> .7/site-packages/sage/libs/pari/gen.so in sage.libs.pari.gen.gen.polroots
> (sage\
> /libs/pari/gen.c:35318)()
>
> RuntimeError: Segmentation fault
> }}}
>
> '''spkg''':
> [http://boxen.math.washington.edu/home/jdemeyer/spkg/pari-2.5.2.p1.spkg]
> (diff: [attachment:pari-2.5.2.p1.diff])
New description:
this was reported to me by Benjamin Dadoun:
{{{
sage: CC=ComplexField(128)
sage: z=polygen(CC, 'z')
sage: p=340282366920938463463374607431768211457*z^84 -
446662175392119146634315708974074167296*z^80 +
279189840125316599983095153558720348160*z^76 -
110522928999596165272398266482588385280*z^72 +
31087466142071580858231009754176552960*z^68 -
6606701181888932299640001500276588544*z^64 +
1101219301431275611150985571298443264*z^60 -
147498447216213728441335387395194880*z^56 +
16134143217737051761322600788131840*z^52 -
1456690062677843407408776850964480*z^48 +
109261914698248556477361418141696*z^44 -
6829504668478678587441535778816*z^40 + 355736441058167833075415777280*z^36
- 15393873200469425036030115840*z^32 + 549832294277433090197422080*z^28 -
16038265915694612515651584*z^24 + 375931794881970935169024*z^20 -
6911153168471496130560*z^16 + 95997158355731169280*z^12 -
947428403886210560*z^8 + 5921977682886976*z^4 - 17626570956801
sage: p.roots(ring=CC)
---------------------------------------------------------------------------
RuntimeError Traceback (most recent call
last)
/users/caramel/bdadoun/Desktop/ceval/<ipython console> in <module>()
/usr/local/sage-5.1-linux-64bit-
ubuntu_12.04_lts-x86_64-Linux/local/lib/python2\
.7/site-packages/sage/rings/polynomial/polynomial_element.so in
sage.rings.poly\
nomial.polynomial_element.Polynomial.roots
(sage/rings/polynomial/polynomial_el\
ement.c:31093)()
/usr/local/sage-5.1-linux-64bit-
ubuntu_12.04_lts-x86_64-Linux/local/lib/python2\
.7/site-packages/sage/libs/pari/gen.so in sage.libs.pari.gen.gen.polroots
(sage\
/libs/pari/gen.c:35318)()
RuntimeError: Segmentation fault
}}}
'''spkg''':
[http://boxen.math.washington.edu/home/jdemeyer/spkg/pari-2.5.2.p1.spkg]
(diff: [attachment:pari-2.5.2.p1.diff])
'''apply''' [attachment:13314_polroots_test.patch]
--
Comment:
Added a regression test ;-) Needs review.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13314#comment:18>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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