Patches item #1752317, was opened at 2007-07-12 01:57
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Category: Core (C code)
Group: Python 3000
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Amaury Forgeot d'Arc (amauryf)
Assigned to: Nobody/Anonymous (nobody)
Summary: reference leak in _PyUnicode_AsDefaultEncodedString
Initial Comment:
If I understand correctlty, _PyUnicode_AsDefaultEncodedString creates and
caches a utf8 translation of the string. It returns a borrowed reference to
this.
But the stored value (in ->defenc) has a refcount of 2, and will never be
released when the unicode object is freed.
The effect is obvious in debug build: the total references count used to
increase by 1 for each function call.
The patch is easy:
Index: Objects/unicodeobject.c
=======================================================
--- Objects/unicodeobject.c (revision 56284)
+++ Objects/unicodeobject.c (working copy)
@@ -1207,7 +1213,6 @@
PyBytes_Size(b));
Py_DECREF(b);
if (!errors) {
- Py_XINCREF(v);
((PyUnicodeObject *)unicode)->defenc = v;
}
return v;
----------------------------------------------------------------------
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