Apr 10, 2025 · Apr 11, 2025 · Apr 15, 2025 · Apr 15, 2025 · Apr 16, 2025 · Apr 16, 2025
diff --git a/Python/bytecodes.c b/Python/bytecodes.c
            EXIT_IF(Py_TYPE(iter_o) != &PyList_Type);
            assert(PyStackRef_IsTaggedInt(null_or_index));
 #ifdef Py_GIL_DISABLED
            EXIT_IF(!_Py_IsOwnedByCurrentThread(iter_o) ||
                    !_PyObject_GC_IS_SHARED(iter_o));
            EXIT_IF(!_Py_IsOwnedByCurrentThread(iter_o) && !_PyObject_GC_IS_SHARED(iter_o));
 #endif
        }

diff --git a/Python/executor_cases.c.h b/Python/executor_cases.c.h
diff --git a/Python/generated_cases.c.h b/Python/generated_cases.c.h
diff --git a/Python/specialize.c b/Python/specialize.c
    PyObject *iter_o = PyStackRef_AsPyObjectBorrow(iter);
    PyTypeObject *tp = Py_TYPE(iter_o);
 #ifdef Py_GIL_DISABLED
    // Only specialize for uniquely referenced iterators, so that we know
    // they're only referenced by this one thread. This is more limiting
    // than we need (even `it = iter(mylist); for item in it:` won't get
    // specialized) but we don't have a way to check whether we're the only
    // _thread_ who has access to the object.
    if (!_PyObject_IsUniquelyReferenced(iter_o))
    // Only specialize for lists owned by this thread or shared
    if (!_Py_IsOwnedByCurrentThread(iter_o) && !_PyObject_GC_IS_SHARED(iter_o)) {
        goto failure;
    }
 #endif
    if (PyStackRef_IsNull(null_or_index)) {
        if (tp == &PyRangeIter_Type) {
Original file line number	Diff line number	Diff line change
Expand Up		@@ -3202,8 +3202,7 @@ dummy_func(
		EXIT_IF(Py_TYPE(iter_o) != &PyList_Type);
		assert(PyStackRef_IsTaggedInt(null_or_index));
		#ifdef Py_GIL_DISABLED
		EXIT_IF(!_Py_IsOwnedByCurrentThread(iter_o) \|\|
		!_PyObject_GC_IS_SHARED(iter_o));
		EXIT_IF(!_Py_IsOwnedByCurrentThread(iter_o) && !_PyObject_GC_IS_SHARED(iter_o));
		#endif
		}

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Original file line number	Diff line number	Diff line change
Expand Up		@@ -2905,13 +2905,10 @@ _Py_Specialize_ForIter(_PyStackRef iter, _PyStackRef null_or_index, _Py_CODEUNIT
		PyObject *iter_o = PyStackRef_AsPyObjectBorrow(iter);
		PyTypeObject *tp = Py_TYPE(iter_o);
		#ifdef Py_GIL_DISABLED
		// Only specialize for uniquely referenced iterators, so that we know
		// they're only referenced by this one thread. This is more limiting
		// than we need (even `it = iter(mylist); for item in it:` won't get
		// specialized) but we don't have a way to check whether we're the only
		// _thread_ who has access to the object.
		if (!_PyObject_IsUniquelyReferenced(iter_o))
		// Only specialize for lists owned by this thread or shared
		if (!_Py_IsOwnedByCurrentThread(iter_o) && !_PyObject_GC_IS_SHARED(iter_o)) {
		goto failure;
		}
		#endif
		if (PyStackRef_IsNull(null_or_index)) {
		if (tp == &PyRangeIter_Type) {
Expand Down