A static swapped_op[] array was defined in 3 different C files, & I think

I need to define it again.  Bite the bullet and define it once as an
extern, _Py_SwappedOp[].

Include/object.h

@@ -667,6 +667,11 @@ PyAPI_DATA(PyObject) _Py_NotImplementedStruct; /* Don't use this directly */
 #define Py_GT 4
 #define Py_GE 5
 
+/* Maps Py_LT to Py_GT, ..., Py_GE to Py_LE.
+ * Defined in object.c.
+ */
+PyAPI_DATA(int) _Py_SwappedOp[];
+
 /*
 Define staticforward and statichere for source compatibility with old
 C extensions.

Objects/classobject.c

@@ -1873,9 +1873,6 @@ half_richcompare(PyObject *v, PyObject *w, int op)
 	return res;
 }
 
-/* Map rich comparison operators to their swapped version, e.g. LT --> GT */
-static int swapped_op[] = {Py_GT, Py_GE, Py_EQ, Py_NE, Py_LT, Py_LE};
-
 static PyObject *
 instance_richcompare(PyObject *v, PyObject *w, int op)
 {
@@ -1889,7 +1886,7 @@ instance_richcompare(PyObject *v, PyObject *w, int op)
 	}
 
 	if (PyInstance_Check(w)) {
-		res = half_richcompare(w, v, swapped_op[op]);
+		res = half_richcompare(w, v, _Py_SwappedOp[op]);
 		if (res != Py_NotImplemented)
 			return res;
 		Py_DECREF(res);

Objects/object.c

@@ -476,7 +476,7 @@ adjust_tp_compare(int c)
                          ? (t)->tp_richcompare : NULL)
 
 /* Map rich comparison operators to their swapped version, e.g. LT --> GT */
-static int swapped_op[] = {Py_GT, Py_GE, Py_EQ, Py_NE, Py_LT, Py_LE};
+extern int _Py_SwappedOp[] = {Py_GT, Py_GE, Py_EQ, Py_NE, Py_LT, Py_LE};
 
 /* Try a genuine rich comparison, returning an object.  Return:
    NULL for exception;
@@ -494,7 +494,7 @@ try_rich_compare(PyObject *v, PyObject *w, int op)
 	if (v->ob_type != w->ob_type &&
 	    PyType_IsSubtype(w->ob_type, v->ob_type) &&
 	    (f = RICHCOMPARE(w->ob_type)) != NULL) {
-		res = (*f)(w, v, swapped_op[op]);
+		res = (*f)(w, v, _Py_SwappedOp[op]);
 		if (res != Py_NotImplemented)
 			return res;
 		Py_DECREF(res);
@@ -506,7 +506,7 @@ try_rich_compare(PyObject *v, PyObject *w, int op)
 		Py_DECREF(res);
 	}
 	if ((f = RICHCOMPARE(w->ob_type)) != NULL) {
-		return (*f)(w, v, swapped_op[op]);
+		return (*f)(w, v, _Py_SwappedOp[op]);
 	}
 	res = Py_NotImplemented;
 	Py_INCREF(res);

Objects/typeobject.c

@@ -4638,9 +4638,6 @@ half_richcompare(PyObject *self, PyObject *other, int op)
 	return res;
 }
 
-/* Map rich comparison operators to their swapped version, e.g. LT --> GT */
-static int swapped_op[] = {Py_GT, Py_GE, Py_EQ, Py_NE, Py_LT, Py_LE};
-
 static PyObject *
 slot_tp_richcompare(PyObject *self, PyObject *other, int op)
 {
@@ -4653,7 +4650,7 @@ slot_tp_richcompare(PyObject *self, PyObject *other, int op)
 		Py_DECREF(res);
 	}
 	if (other->ob_type->tp_richcompare == slot_tp_richcompare) {
-		res = half_richcompare(other, self, swapped_op[op]);
+		res = half_richcompare(other, self, _Py_SwappedOp[op]);
 		if (res != Py_NotImplemented) {
 			return res;
 		}