#14501: Fix memory allocation problems in data_structures_pyx.pxi
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Reporter: dcoudert | Owner: joyner
Type: defect | Status: needs_review
Priority: major | Milestone: sage-5.10
Component: group theory | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: David Coudert | Merged in:
Dependencies: | Stopgaps:
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Comment (by dcoudert):
> Do you still needs those lines ?
>
> {{{
> sage_free(int_array)
> sage_free(int_ptrs)
> }}}
Yes. They have not yet been assigned to SC.stuff pointers and so must be
deallocated.
The other option is to assign these pointers to SC.stuff and let
{{{SC_dealloc}}} do the job, but then it will enter a for loop. We don't
need that.
> Short of this, I think the patch is good to go. I wish there was a nice
way to avoid this O(n) calloc, but everything I see would make the code
trickier, and it really doesn't need it `:-P`
At least calloc is low level implementation and so we may expect it is way
faster than assignments.
Thanks,
D.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14501#comment:13>
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