#20116: Random segfault in cysignals.signals.sig_raise_exception
----------------------------------+-------------------------------
Reporter: vbraun | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-7.1
Component: packages: standard | Keywords: random_fail
Merged in: | Authors:
Reviewers: | Report Upstream: N/A
Work issues: | Branch:
Commit: | Dependencies:
Stopgaps: |
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Random failure on the buildbot (Ubuntu 14.04 32 bit)
{{{
sage -t --long src/sage/calculus/wester.py
**********************************************************************
File "src/sage/calculus/wester.py", line 483, in sage.calculus.wester
Failed example:
m.eigenspaces_left()
Exception raised:
Traceback (most recent call last):
File
"/mnt/highperf/buildbot/slave/sage_git/build/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 496, in _run
self.compile_and_execute(example, compiler, test.globs)
File
"/mnt/highperf/buildbot/slave/sage_git/build/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 858, in compile_and_execute
exec(compiled, globs)
File "<doctest sage.calculus.wester[161]>", line 1, in <module>
m.eigenspaces_left()
File "sage/matrix/matrix2.pyx", line 5474, in
sage.matrix.matrix2.Matrix.eigenspaces_left
(/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix2.c:40098)
G = self.fcp() # factored characteristic polynomial
File "sage/matrix/matrix2.pyx", line 2431, in
sage.matrix.matrix2.Matrix.fcp
(/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix2.c:20985)
return self.charpoly(var).factor()
File "sage/matrix/matrix_rational_dense.pyx", line 946, in
sage.matrix.matrix_rational_dense.Matrix_rational_dense.charpoly
(/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_rational_dense.c:11037)
f = A.charpoly(var, algorithm='linbox')
File "sage/matrix/matrix_integer_dense.pyx", line 1252, in
sage.matrix.matrix_integer_dense.Matrix_integer_dense.charpoly
(/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_integer_dense.c:12798)
g = self._charpoly_linbox(var)
File "sage/matrix/matrix_integer_dense.pyx", line 1305, in
sage.matrix.matrix_integer_dense.Matrix_integer_dense._charpoly_linbox
(/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_integer_dense.c:13598)
return self._poly_linbox(var=var, typ='charpoly')
File "sage/matrix/matrix_integer_dense.pyx", line 1328, in
sage.matrix.matrix_integer_dense.Matrix_integer_dense._poly_linbox
(/mnt/highperf/buildbot/slave/sage_git/build/src/build/cythonized/sage/matrix/matrix_integer_dense.c:13957)
sig_on()
File "src/cysignals/signals.pyx", line 115, in
cysignals.signals.sig_raise_exception (build/src/cysignals/signals.c:1400)
SignalError: Segmentation fault
**********************************************************************
1 item had failures:
1 of 199 in sage.calculus.wester
[198 tests, 1 failure, 2.79 s]
}}}
--
Ticket URL: <http://trac.sagemath.org/ticket/20116>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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