python · sobolevn · Nov 13, 2024 · Nov 12, 2024 · Nov 12, 2024 · Nov 12, 2024
diff --git a/Lib/test/test_buffer.py b/Lib/test/test_buffer.py
@@ -3910,6 +3910,8 @@ def test_memoryview_check_released(self):
         self.assertRaises(ValueError, memoryview, m)
         # memoryview.cast()
         self.assertRaises(ValueError, m.cast, 'c')
+        # memoryview.__iter__()
+        self.assertRaises(ValueError, m.__iter__)
         # getbuffer()
         self.assertRaises(ValueError, ndarray, m)
         # memoryview.tolist()

diff --git a/Misc/NEWS.d/next/Core_and_Builtins/2024-11-12-19-24-00.gh-issue-126341.5SdAe1.rst b/Misc/NEWS.d/next/Core_and_Builtins/2024-11-12-19-24-00.gh-issue-126341.5SdAe1.rst
@@ -0,0 +1 @@
+Now :exc:`ValueError` is raised instead of :exc:`SystemError` when trying to iterate over a released :class:`memoryview` object.
diff --git a/Objects/memoryobject.c b/Objects/memoryobject.c
@@ -3356,6 +3356,7 @@ memory_iter(PyObject *seq)
         PyErr_BadInternalCall();
         return NULL;
     }
+    CHECK_RELEASED(seq);
     PyMemoryViewObject *obj = (PyMemoryViewObject *)seq;
     int ndims = obj->view.ndim;
     if (ndims == 0) {
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Now :exc:`ValueError` is raised instead of :exc:`SystemError` when trying to iterate over a released :class:`memoryview` object.