#14059: Fix refcount/deallocation of integers
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Reporter: SimonKing | Owner: rlm
Type: defect | Status: positive_review
Priority: blocker | Milestone: sage-5.7
Component: memleak | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers: Jean-Pierre Flori
Authors: Simon King | Merged in:
Dependencies: | Stopgaps:
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Comment (by SimonKing):
Replying to [comment:54 jpflori]:
> Ok got it.
>
> The problem is that the dummy is allocated with the PyObject_GC_Malloc
function and that adds an additional header of 32 bytes before the object
itself.
And `fast_tp_new` can not use that? What is the difference between
`PyObject_GC_Malloc` and `PyObject_MALLOC`? I guess it's about the cyclic
garbage collection, which seemingly we don't want here. But if we don't
want it, why are integers created with `PyObject_GC_Malloc` before
establishing the hook?
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14059#comment:55>
Sage <http://www.sagemath.org>
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