#13447: Make libsingular multivariate polynomial rings collectable
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Reporter: nbruin |
Owner: rlm
Type: defect |
Status: needs_review
Priority: major |
Milestone: sage-5.4
Component: memleak |
Resolution:
Keywords: | Work
issues: Input from a libsingular expert
Report Upstream: None of the above - read trac for reasoning. |
Reviewers: Simon King
Authors: Nils Bruin, Simon King | Merged
in:
Dependencies: #11521 |
Stopgaps:
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Comment (by SimonKing):
On the other hand: I'd really like to understand why it doesn't work with
`singular_ring_delete` in this case.
I found that the segfault occurs inside
`singular_ring_delete(currRingHdl.data.uring)` when attempting to change
to `currRingHdl.data.uring`. So, apparently, `currRingHdl.data.uring` is
invalid at that point. And this is hardly surprising, because it is
created by the following lines, which look like a hack to me:
{{{
if currRingHdl == NULL:
import sys
currRingHdl = enterid("my_awesome_sage_ring", 0, RING_CMD,
&IDROOT, 1)
currRingHdl.data.uring.ref += 1
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/13447#comment:46>
Sage <http://www.sagemath.org>
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