#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 ncohen):
Yo !
Why don't you just put a "calloc" where StabilizerChain is allocated then
?
> No, they are allocated using 2 distinct malloc. So the first one could
succeed while the second one fails. In case the second fails, then it is
set to NULL.
That's the block of code you will see each time they are allocated
{{{
SC.generators[i] = <int *> sage_malloc( SC.array_size[i]*n *
sizeof(int) )
SC.gen_inverses[i] = <int *> sage_malloc( SC.array_size[i]*n *
sizeof(int) )
if SC.generators[i] is NULL or SC.gen_inverses[i] is NULL:
SC_dealloc(SC)
return NULL
}}}
I swear that one cannot be NULL while the other is `:-P`
Nathann
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/14501#comment:10>
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