[Python-checkins] r53558 - in python/branches/release25-maint: Misc/NEWS Modules/_ctypes Modules/_ctypes/cfield.c
thomas.heller
python-checkins at python.org
Thu Jan 25 20:19:35 CET 2007
Author: thomas.heller
Date: Thu Jan 25 20:19:35 2007
New Revision: 53558
Modified:
python/branches/release25-maint/Misc/NEWS
python/branches/release25-maint/Modules/_ctypes/ (props changed)
python/branches/release25-maint/Modules/_ctypes/cfield.c
Log:
Merged revisions 53556 via svnmerge from
svn+ssh://pythondev@svn.python.org/python/trunk/Modules/_ctypes
........
r53556 | thomas.heller | 2007-01-25 19:34:14 +0100 (Do, 25 Jan 2007) | 3 lines
Fix for #1643874: When calling SysAllocString, create a PyCObject
which will eventually call SysFreeString to free the BSTR resource.
........
Modified: python/branches/release25-maint/Misc/NEWS
==============================================================================
--- python/branches/release25-maint/Misc/NEWS (original)
+++ python/branches/release25-maint/Misc/NEWS Thu Jan 25 20:19:35 2007
@@ -154,6 +154,8 @@
Library
-------
+- Patch #1643874: memory leak in ctypes fixed.
+
- Bug #1598181: Avoid O(N**2) bottleneck in subprocess communicate().
- Patch #1627441: close sockets properly in urllib2.
Modified: python/branches/release25-maint/Modules/_ctypes/cfield.c
==============================================================================
--- python/branches/release25-maint/Modules/_ctypes/cfield.c (original)
+++ python/branches/release25-maint/Modules/_ctypes/cfield.c Thu Jan 25 20:19:35 2007
@@ -1424,10 +1424,19 @@
#endif
#ifdef MS_WIN32
+/* We cannot use SysFreeString as the PyCObject_FromVoidPtr
+ because of different calling convention
+*/
+static void _my_SysFreeString(void *p)
+{
+ SysFreeString((BSTR)p);
+}
+
static PyObject *
BSTR_set(void *ptr, PyObject *value, unsigned size)
{
BSTR bstr;
+ PyObject *result;
/* convert value into a PyUnicodeObject or NULL */
if (Py_None == value) {
@@ -1455,15 +1464,19 @@
} else
bstr = NULL;
- /* free the previous contents, if any */
- if (*(BSTR *)ptr)
- SysFreeString(*(BSTR *)ptr);
-
- /* and store it */
- *(BSTR *)ptr = bstr;
+ if (bstr) {
+ result = PyCObject_FromVoidPtr((void *)bstr, _my_SysFreeString);
+ if (result == NULL) {
+ SysFreeString(bstr);
+ return NULL;
+ }
+ } else {
+ result = Py_None;
+ Py_INCREF(result);
+ }
- /* We don't need to keep any other object */
- _RET(value);
+ *(BSTR *)ptr = bstr;
+ return result;
}
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