#18905: fix more leaks found in #18897
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Reporter: dimpase | Owner:
Type: defect | Status: new
Priority: major | Milestone: sage-6.8
Component: memleak | Resolution:
Keywords: | Merged in:
Authors: | Reviewers:
Report Upstream: N/A | Work issues:
Branch: | Commit:
Dependencies: #18897 | Stopgaps:
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Comment (by pbruin):
This is probably because the `algebraic_closure()` method of finite fields
is cached (see #14990), creating circular references between finite fields
and their algebraic closures. The following simpler code exhibits a
similar memory leak:
{{{
#!python
import gc
from collections import Counter
gc.collect()
pre = {id(c) for c in gc.get_objects()}
for p in prime_range(100):
GF(p).algebraic_closure()
gc.collect()
post = Counter(type(o) for o in gc.get_objects() if id(o) not in pre)
print([(k,v) for (k,v) in post.iteritems() if v>10])
}}}
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Ticket URL: <http://trac.sagemath.org/ticket/18905#comment:2>
Sage <http://www.sagemath.org>
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