#12313: Fix yet another memory leak caused by caching of coercion data
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Reporter: SimonKing | Owner:
Type: defect | Status:
needs_review
Priority: major | Milestone: sage-5.3
Component: memleak | Resolution:
Keywords: coercion weak dictionary | Work issues:
Report Upstream: N/A | Reviewers: Simon King,
Jean-Pierre Flori, John Perry
Authors: Simon King, Jean-Pierre Flori | Merged in:
Dependencies: #11521, #11599, #12969, #12215 | Stopgaps:
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Comment (by jpflori):
From
http://www.cython.org/release/Cython-0.11.3/Cython/Includes/python.pxd
{{{
...
# it doesn't increment the reference count. When it sees PyObject*
# in order to use the result you must explicitly cast to <object>,
# and when you do that Cython increments the reference count wether
# you want it to or not, forcing you to an explicit DECREF (or leak
memory).
# To avoid this we make the above convention. Note, you can
...
}}}
which also supports the above.
See also
https://groups.google.com/forum/?fromgroups=#!topic/cython-
users/pZFurj3rUyg
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12313#comment:156>
Sage <http://www.sagemath.org>
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