#4639: bad memory leak with exponentiation
------------------------------+---------------------------------------------
Reporter: bober | Owner: somebody
Type: defect | Status: new
Priority: critical | Milestone:
Component: basic arithmetic | Keywords:
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I think that the following example speaks for itself. (This was on an x86,
32 bit, running Ubuntu.)
Also, I believe that these examples had no problems in sage 3.0.2.
{{{
[EMAIL PROTECTED]:~/math/tests$ sage
----------------------------------------------------------------------
| Sage Version 3.2, Release Date: 2008-11-20 |
| Type notebook() for the GUI, and license() for information. |
----------------------------------------------------------------------
sage: get_memory_usage()
114.5546875
sage: for z in xrange(10000):
...: a = 3^i
...:
sage: get_memory_usage()
121.4375
sage: for z in xrange(10000):
a = 3^CC.0
...:
sage: get_memory_usage()
128.96484375
sage: for z in xrange(10000):
a = 3.0^CC.0
...:
sage: get_memory_usage()
187.36328125
sage: var('t')
t
sage: for z in xrange(10000):
a = 3.0^t
....:
sage: get_memory_usage()
231.4609375
sage: #But, integer^integer is OK:
sage: for z in xrange(10000):
a = 3^3
....:
sage: get_memory_usage
<function get_memory_usage at 0x8415f0c>
sage: get_memory_usage()
231.58984375
sage: for z in xrange(10000):
a = 3^3
....:
sage: get_memory_usage()
231.58984375
sage: for z in xrange(10000):
a = 3.0^CC.0
....:
saget_memory_usage()
290.1640625
sage: for z in xrange(10000):
a = CC.0^CC.0
....:
sage: get_memory_usage()
290.1640625
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/4639>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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