#17143: Polybori segfault
-------------------------------------------------+-------------------------
Reporter: SimonKing | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.4
Component: commutative algebra | Resolution:
Keywords: polybori segfault | Merged in:
Authors: | Reviewers:
Report Upstream: Reported upstream. No | Work issues:
feedback yet. | Commit:
Branch: | Stopgaps:
Dependencies: |
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Comment (by nthiery):
Indeed: with develop=6.4beta4 (or more precisely very close thereof), and
on my laptop (Ubuntu 10.4):
{{{
sage: import platform
sage: sage: platform.architecture()
('64bit', 'ELF')
sage: platform.linux_distribution()
('debian', 'jessie/sid', '')
sage: platform.python_compiler()
'GCC 4.8.2'
}}}
I get a good dozen of segfaults:
{{{
sage -t --long src/sage/rings/polynomial/pbori.pyx
**********************************************************************
File "src/sage/rings/polynomial/pbori.pyx", line 125, in
sage.rings.polynomial.pbori
Failed example:
for f in I2.groebner_basis():
f
Exception raised:
Traceback (most recent call last):
File "/opt/sage-git/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 486, in _run
self.compile_and_execute(example, compiler, test.globs)
File "/opt/sage-git/local/lib/python2.7/site-
packages/sage/doctest/forker.py", line 849, in compile_and_execute
exec(compiled, globs)
File "<doctest sage.rings.polynomial.pbori[10]>", line 1, in
<module>
for f in I2.groebner_basis():
File "sage/rings/polynomial/pbori.pyx", line 5062, in
sage.rings.polynomial.pbori.BooleanPolynomialIdeal.groebner_basis
(build/cythonized/sage/rings/polynomial/pbori.cpp:38218)
File "sage/ext/c_lib.pyx", line 97, in
sage.ext.c_lib.sig_raise_exception
(build/cythonized/sage/ext/c_lib.c:1168)
SignalError: Segmentation fault
....
Unhandled SIGSEGV: A segmentation fault 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.
------------------------------------------------------------------------
}}}
If useful, I could post a complete trace.
--
Ticket URL: <http://trac.sagemath.org/ticket/17143#comment:16>
Sage <http://www.sagemath.org>
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