#9129: sqrt memory leaks
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Reporter: zimmerma | Owner: AlexGhitza
Type: defect | Status: new
Priority: critical | Milestone: sage-5.0
Component: basic arithmetic | Keywords: sd35.5
Work_issues: | Upstream: N/A
Reviewer: | Author:
Merged: | Dependencies:
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Comment(by burcin):
Replying to [comment:20 zimmerma]:
> In all cases there is no memory leak for exact powers, but there is for
inexact powers.
> Thus I strongly suspect some special code that detects exact powers, but
where is it?
The `__pow__` method of rational numbers. :) When computing `2^(1/2)`,
`Integer.__pow__` delegates the operation to `Rational.__pow__`. If the
result is not exact, `Rational.__pow__` returns a symbolic expression.
This should really be tested with the patch at #8659, which eliminates the
need to call `Number_T::pow()` twice. Even with that patch, the leak is
still there however.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/9129#comment:23>
Sage <http://www.sagemath.org>
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