#715: Parents probably not reclaimed due to too much caching
--------------------------------------------------+-------------------------
Reporter: robertwb | Owner: somebody
Type: defect | Status:
positive_review
Priority: major | Milestone: sage-5.0
Component: coercion | Resolution:
Keywords: weak cache coercion Cernay2012 | Work issues:
Report Upstream: N/A | Reviewers: Jean-Pierre
Flori
Authors: Simon King | Merged in:
Dependencies: #9138, #11900, #11599, #11521 | Stopgaps:
--------------------------------------------------+-------------------------
Comment (by jdemeyer):
Bad news...
Applying [attachment:trac715_one_triple_dict.patch] causes Segmentation
Faults on startup on 32-bit systems.
$ ./sage --python -v -c 'import sage.all'
{{{
[...]
import sage.libs.singular.function_factory # precompiled from
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/python2.7/site-
packages/sage/libs/singular/function_factory.pyc
import sage.rings.polynomial.multi_polynomial_libsingular # dynamically
loaded from
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/python2.7/site-
packages/sage/rings/polynomial/multi_polynomial_libsingular.so
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libcsage.so(print_backtrace+0x4c)[0xf9f7c74]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libcsage.so(sigdie+0x34)[0xf9f7ce0]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libcsage.so(sage_signal_handler+0x20c)[0xf9f77d4]
[0x100364]
[0x10bb81d0]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/python2.7/site-
packages/sage/structure/coerce.so(+0xb994)[0xe6ab994]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/python2.7/site-
packages/sage/structure/coerce.so(+0x16654)[0xe6b6654]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/python2.7/site-
packages/sage/structure/element.so(__pyx_f_4sage_9structure_7element_7Element__richcmp+0x42c)[0xe735e80]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/python2.7/site-
packages/sage/rings/real_mpfr.so(+0xcf70)[0xd6bcf70]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libpython2.7.so.1.0(+0x90794)[0xfeb0794]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libpython2.7.so.1.0(PyObject_RichCompare+0x84)[0xfeb2d8c]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x2b60)[0xff1cd10]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libpython2.7.so.1.0(PyEval_EvalFrameEx+0x78a4)[0xff21a54]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libpython2.7.so.1.0(PyEval_EvalCodeEx+0x964)[0xff2240c]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libpython2.7.so.1.0(+0x73138)[0xfe93138]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libpython2.7.so.1.0(PyObject_Call+0x74)[0xfe63900]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libpython2.7.so.1.0(+0x52dac)[0xfe72dac]
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/local/lib/libpython2.7.so.1.0(PyObject_Call+0x74)[0xfe63900]
[...]
------------------------------------------------------------------------
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(). You might
want to run Sage under gdb with 'sage -gdb' to debug this.
Sage will now terminate.
------------------------------------------------------------------------
/home/jdemeyer/silius/sage-5.0.beta12-gcc-32/spkg/bin/sage: line 464:
16347 Segmentation fault python "$@"
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/715#comment:167>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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