[Patches] [ python-Patches-1643874 ] ctypes leaks memory

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Patches item #1643874, was opened at 2007-01-24 22:12
Message generated for change (Comment added) made by theller
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Category: Library (Lib)
Group: Python 2.5
>Status: Closed
>Resolution: Fixed
Priority: 5
Private: No
Submitted By: Thomas Heller (theller)
Assigned to: Thomas Heller (theller)
Summary: ctypes leaks memory

Initial Comment:
This program leaks memory, because a string is allocated with the win32 call SysAllocString(), but SysFreeString() is never called.

"""
from ctypes import oledll, _SimpleCData

class BSTR(_SimpleCData):
    _type_ = "X"

func = oledll.oleaut32.SysStringLen
func.argtypes = (BSTR,)

while 1:
    func("abcdefghijk")

"""

The attached patch fixes this.

(The BSTR data type is not exposed by ctypes or ctypes.wintypes, because it is only used in connection with Windows COM objects.)

The patch should be applied to release25-maint and trunk.

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>Comment By: Thomas Heller (theller)
Date: 2007-01-25 20:24

Message:
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user_id=11105
Originator: YES

Fixed in r53556, r53557 (trunk) and r53558 (release25-maint).

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