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gh-91632: Fix generic_alias_iterator to be finalized at exit. #91727

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Merged
corona10 merged 5 commits into from
Apr 20, 2022
Merged

gh-91632: Fix generic_alias_iterator to be finalized at exit. #91727

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cdd6a58
Fix Py_GenericAliasIterType to be finalized at exit.
corona10 Apr 20, 2022
d60df13
Address Victor's review
corona10 Apr 20, 2022
55d04c4
Update Misc/NEWS.d/next/Core and Builtins/2022-04-20-14-43-37.gh-issu…
corona10 Apr 20, 2022
a9a938c
Address code review
corona10 Apr 20, 2022
9b3dbd0
fix comment style
corona10 Apr 20, 2022
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1 change: 1 addition & 0 deletions Misc/NEWS.d/next/Core and Builtins/2022-04-20-14-43-37.gh-issue-91632.cvUhsZ.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Fix a minor memory leak at exit: release the memory of the :class:`generic_alias_iterator` type. Patch by Dong-hee Na.
6 changes: 4 additions & 2 deletions Objects/genericaliasobject.c
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Expand Up @@ -683,7 +683,9 @@ ga_iter_clear(PyObject *self) {
return 0;
}

static PyTypeObject Py_GenericAliasIterType = {
// gh-91632: _Py_GenericAliasIterType is exported to be cleared
// in _PyTypes_FiniTypes.
PyTypeObject _Py_GenericAliasIterType = {
PyVarObject_HEAD_INIT(&PyType_Type, 0)
.tp_name = "generic_alias_iterator",
.tp_basicsize = sizeof(gaiterobject),
Expand All @@ -697,7 +699,7 @@ static PyTypeObject Py_GenericAliasIterType = {

static PyObject *
ga_iter(PyObject *self) {
gaiterobject *gi = PyObject_GC_New(gaiterobject, &Py_GenericAliasIterType);
gaiterobject *gi = PyObject_GC_New(gaiterobject, &_Py_GenericAliasIterType);
if (gi == NULL) {
return NULL;
}
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2 changes: 2 additions & 0 deletions Objects/object.c
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Expand Up @@ -1834,6 +1834,7 @@ _PyTypes_InitState(PyInterpreterState *interp)
#ifdef MS_WINDOWS
extern PyTypeObject PyHKEY_Type;
#endif
extern PyTypeObject _Py_GenericAliasIterType;

static PyTypeObject* static_types[] = {
// The two most important base types: must be initialized first and
Expand Down Expand Up @@ -1923,6 +1924,7 @@ static PyTypeObject* static_types[] = {
&_PyAsyncGenWrappedValue_Type,
&_PyContextTokenMissing_Type,
&_PyCoroWrapper_Type,
&_Py_GenericAliasIterType,
&_PyHamtItems_Type,
&_PyHamtKeys_Type,
&_PyHamtValues_Type,
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