#19245: segfault in sage/rings/polynomial/multi_polynomial_libsingular.so
-------------------------+-------------------------------------------------
Reporter: cnassau | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.9
Component: PLEASE | Keywords: libsingular, matrix,
CHANGE | substitution
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
-------------------------+-------------------------------------------------
This code crashes Sage (version 6.9.beta5, detected on the branch for
#6101):
{{{
br = PolynomialRing(ZZ,"a,b,c,d,x1,x2,y1,y2")
br.inject_variables()
dct = {b:a,d:c,x1:0,x2:0,y1:0,y2:0}
L1 =
matrix(br,[[x1,x2],[-x1,-x2],[y1,y2],[-y1,-y2]]).transpose().subs(dct)
}}}
Backtrace:
{{{
------------------------------------------------------------------------
/waste/cn/sage-git/local/lib/python2.7/site-
packages/sage/ext/interrupt/interrupt.so(+0x4125)[0x7ff648c6a125]
/waste/cn/sage-git/local/lib/python2.7/site-
packages/sage/ext/interrupt/interrupt.so(+0x4177)[0x7ff648c6a177]
/waste/cn/sage-git/local/lib/python2.7/site-
packages/sage/ext/interrupt/interrupt.so(+0x6029)[0x7ff648c6c029]
/lib64/libpthread.so.0(+0xf890)[0x7ff64b9ec890]
/waste/cn/sage-git/local/lib/python2.7/site-
packages/sage/rings/polynomial/multi_polynomial_libsingular.so(+0x3f1cd)[0x7ff628bd81cd]
/waste/cn/sage-git/local/lib/python2.7/site-
packages/sage/matrix/matrix2.so(+0x13c2f6)[0x7ff62f9192f6]
/waste/cn/sage-
git/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x48a9)[0x7ff64bd041f9]
/waste/cn/sage-
git/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x80d)[0x7ff64bd05a1d]
/waste/cn/sage-
git/local/lib/libpython2.7.so.1.0(PyEval_EvalCode+0x32)[0x7ff64bd05b52]
/waste/cn/sage-
git/local/lib/libpython2.7.so.1.0(PyRun_FileExFlags+0x92)[0x7ff64bd30722]
/waste/cn/sage-
git/local/lib/libpython2.7.so.1.0(PyRun_SimpleFileExFlags+0xd9)[0x7ff64bd31c59]
/waste/cn/sage-
git/local/lib/libpython2.7.so.1.0(Py_Main+0xc4d)[0x7ff64bd479ed]
/lib64/libc.so.6(__libc_start_main+0xf5)[0x7ff64af4fb05]
python[0x4007be]
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/19245>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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