Issue #26200: Restored more safe usages of Py_SETREF.

Modules/_decimal/_decimal.c

@@ -3439,14 +3439,14 @@ dec_as_integer_ratio(PyObject *self, PyObject *args UNUSED)
         goto error;
     }
 
-    Py_XSETREF(exponent, long_methods->nb_power(tmp, exponent, Py_None));
+    Py_SETREF(exponent, long_methods->nb_power(tmp, exponent, Py_None));
     Py_DECREF(tmp);
     if (exponent == NULL) {
         goto error;
     }
 
     if (exp >= 0) {
-        Py_XSETREF(numerator, long_methods->nb_multiply(numerator, exponent));
+        Py_SETREF(numerator, long_methods->nb_multiply(numerator, exponent));
         if (numerator == NULL) {
             goto error;
         }
@@ -3462,8 +3462,8 @@ dec_as_integer_ratio(PyObject *self, PyObject *args UNUSED)
         if (tmp == NULL) {
             goto error;
         }
-        Py_XSETREF(numerator, long_methods->nb_floor_divide(numerator, tmp));
-        Py_XSETREF(denominator, long_methods->nb_floor_divide(denominator, tmp));
+        Py_SETREF(numerator, long_methods->nb_floor_divide(numerator, tmp));
+        Py_SETREF(denominator, long_methods->nb_floor_divide(denominator, tmp));
         Py_DECREF(tmp);
         if (numerator == NULL || denominator == NULL) {
             goto error;

Modules/_functoolsmodule.c

@@ -294,9 +294,9 @@ partial_setstate(partialobject *pto, PyObject *state)
     else
         Py_INCREF(dict);
 
-    Py_XSETREF(pto->fn, fn);
-    Py_XSETREF(pto->args, fnargs);
-    Py_XSETREF(pto->kw, kw);
+    Py_SETREF(pto->fn, fn);
+    Py_SETREF(pto->args, fnargs);
+    Py_SETREF(pto->kw, kw);
     Py_XSETREF(pto->dict, dict);
     Py_RETURN_NONE;
 }

Objects/floatobject.c

@@ -1494,13 +1494,13 @@ float_as_integer_ratio(PyObject *v, PyObject *unused)
 
     /* fold in 2**exponent */
     if (exponent > 0) {
-        Py_XSETREF(numerator,
+        Py_SETREF(numerator,
                   long_methods->nb_lshift(numerator, py_exponent));
         if (numerator == NULL)
             goto error;
     }
     else {
-        Py_XSETREF(denominator,
+        Py_SETREF(denominator,
                   long_methods->nb_lshift(denominator, py_exponent));
         if (denominator == NULL)
             goto error;