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[3.13]gh-140487: Fix Py_RETURN_NOTIMPLEMENTED in limited C API 3.11 (GH-140636) (GH-140670)

Py_RETURN_NONE, Py_RETURN_TRUE and Py_RETURN_FALSE have already beenfixed by commit9258f3d (issuegh-134989).(cherry picked from commitc636477)

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Lines changed: 7 additions & 2 deletions

Original file line number	Diff line number	Diff line change
`@@ -1130,8 +1130,13 @@ PyAPI_DATA(PyObject) _Py_NotImplementedStruct; /* Don't use this directly */`
`1130`	`1130`	`# definePy_NotImplemented (&_Py_NotImplementedStruct)`
`1131`	`1131`	`#endif`
`1132`	`1132`
`1133`		`-/* Macro for returning Py_NotImplemented from a function */`
`1134`		`-#definePy_RETURN_NOTIMPLEMENTED return Py_NotImplemented`
	`1133`	`+/* Macro for returning Py_NotImplemented from a function. Only treat`
	`1134`	`+ * Py_NotImplemented as immortal in the limited C API 3.12 and newer. */`
	`1135`	`+#if defined(Py_LIMITED_API)&&Py_LIMITED_API+0<0x030c0000`
	`1136`	`+# definePy_RETURN_NOTIMPLEMENTED return Py_NewRef(Py_NotImplemented)`
	`1137`	`+#else`
	`1138`	`+# definePy_RETURN_NOTIMPLEMENTED return Py_NotImplemented`
	`1139`	`+#endif`
`1135`	`1140`
`1136`	`1141`	`/* Rich comparison opcodes */`
`1137`	`1142`	`#definePy_LT 0`

Lines changed: 2 additions & 0 deletions

Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+Fix:c:macro:`Py_RETURN_NOTIMPLEMENTED` in limited C API 3.11 and older:
	`2`	+don't treat ``Py_NotImplemented`` as immortal. Patch by Victor Stinner.

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