#10797: update PolyBoRi to newest upstream release 0.7
-----------------------------------------------+----------------------------
Reporter: malb | Owner: AlexanderDreyer
Type: enhancement | Status: needs_work
Priority: major | Milestone: sage-4.7
Component: packages | Keywords: polybori
Author: Martin Albrecht,AlexanderDreyer | Upstream: N/A
Reviewer: Martin Albrecht | Merged:
Work_issues: |
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Changes (by malb):
* status: positive_review => needs_work
Comment:
Hi,
it seems I found a regression in the PolyBoRi 0.7.0 update:
{{{
#!python
sage: B.<a,b,c,d,e,f> = BooleanPolynomialRing()
sage: F = Ideal(B.random_element() for _ in range(B.ngens()))
sage: F
Ideal (a*b + a + b*e + c*e + 1, a + b + c*d + c + 1, a*c + c + d*f + d +
1, a*c + c*f + c + d*f + 1, c*f + c + d + e + 1, a + b*c + b*d + e*f + 1)
of Boolean PolynomialRing in a, b, c, d, e, f
sage: F.groebner_basis()
------------------------------------------------------------
Unhandled SIGSEGV: A segmentation fault occurred in Sage.
This probably occurred because a *compiled* component
of Sage has a bug in it (typically accessing invalid memory)
and 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).
------------------------------------------------------------
}}}
'''Backtrace'''
{{{
Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7f192e07c6e0 (LWP 13588)]
linalg_step_modified (polys=@0x7ffffaaf3ea0, terms=@0x7ffffaaf3de0,
leads_from_strat=@0x7ffffaaf3dc0, log=false, optDrawMatrices=false,
matrixPrefix=0x2457108 "matrix") at groebner/src/nf.cc:2335
2335 groebner/src/nf.cc: No such file or directory.
in groebner/src/nf.cc
Current language: auto; currently c++
(gdb) bt
#0 linalg_step_modified (polys=@0x7ffffaaf3ea0, terms=@0x7ffffaaf3de0,
leads_from_strat=@0x7ffffaaf3dc0, log=false, optDrawMatrices=false,
matrixPrefix=0x2457108 "matrix") at groebner/src/nf.cc:2335
#1 0x00007f19020cd4b4 in
polybori::groebner::GroebnerStrategy::faugereStepDense (this=0x35ad520,
orig_system=<value optimized out>) at groebner/src/nf.cc:2451
#2 0x00007f1902bda8ed in
__pyx_pf_4sage_5rings_10polynomial_5pbori_16GroebnerStrategy_faugere_step_dense
(__pyx_v_self=0x35ad510, __pyx_v_v=<value optimized out>) at
sage/rings/polynomial/pbori.cpp:32091
}}}
More detailed backtrace forthcoming.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/10797#comment:26>
Sage <http://www.sagemath.org>
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