#715: Parents probably not reclaimed due to too much caching
-------------------------------------------------------------------+--------
Reporter: robertwb |
Owner: somebody
Type: defect |
Status: needs_review
Priority: major |
Milestone: sage-5.4
Component: coercion |
Resolution:
Keywords: weak cache coercion Cernay2012 | Work
issues:
Report Upstream: N/A |
Reviewers: Jean-Pierre Flori, Simon King, Nils Bruin
Authors: Simon King, Jean-Pierre Flori | Merged
in:
Dependencies: #9138, #11900, #11599, to be merged with #11521 |
Stopgaps:
-------------------------------------------------------------------+--------
Comment (by SimonKing):
With [attachment:cachefunc_94107.py], I get:
{{{
(sage-sh) SimonKing@bsd:sage$ python -t
~/SAGE/work/signal11/cachefunc_94107.py
------------------------------------------------------------------------
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.
------------------------------------------------------------------------
Segmentation fault
}}}
So, that looks much more expressive than what sage -t reports!
However, setting ulimit -c unlimited did not result in a dumped core:
{{{
(sage-sh) SimonKing@bsd:sage$ ulimit -c unlimited
(sage-sh) SimonKing@bsd:sage$ python -t
~/SAGE/work/signal11/cachefunc_94107.py
...
Segmentation fault
(sage-sh) SimonKing@bsd:sage$ ls /cores/
(sage-sh) SimonKing@bsd:sage$
}}}
So, can you explain how I could get a core dump?
Apply trac_715_combined.patch trac_715_local_refcache.patch
trac_715_safer.patch trac_715_specification.patch
And then #11521
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/715#comment:273>
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