Fix crash when deleting func.__doc__ (python#43)

iritkatriel · web-flow · commit 79c31292ce46 · 2021-07-20T16:40:29.000-07:00
diff --git a/Objects/funcobject.c b/Objects/funcobject.c
@@ -521,7 +521,7 @@ func_get_doc(PyFunctionObject *op, void *Py_UNUSED(ignored))
 static int
 func_set_doc(PyFunctionObject *op, PyObject *value, void *Py_UNUSED(ignored))
 {
-    Py_INCREF(value);
+    Py_XINCREF(value);
     Py_XSETREF(op->func_doc, value);
     return 0;
 }

Original file line number	Diff line number	Diff line change
`@@ -521,7 +521,7 @@ func_get_doc(PyFunctionObject op, void Py_UNUSED(ignored))`
`521`	`521`	`static int`
`522`	`522`	`func_set_doc(PyFunctionObject op, PyObject value, void *Py_UNUSED(ignored))`
`523`	`523`	`{`
`524`		`- Py_INCREF(value);`
	`524`	`+ Py_XINCREF(value);`
`525`	`525`	`Py_XSETREF(op->func_doc, value);`
`526`	`526`	`return 0;`
`527`	`527`	`}`