#1629: Renamed Py_Size, Py_Type and Py_Refcnt to Py_SIZE, Py_TYPE and Py_REFCNT.
diff --git a/Python/ast.c b/Python/ast.c
index f32f587..3169de9 100644
--- a/Python/ast.c
+++ b/Python/ast.c
@@ -3156,7 +3156,7 @@
                     return NULL;
                 }
                 r = PyString_AS_STRING(w);
-                rn = Py_Size(w);
+                rn = Py_SIZE(w);
                 assert(rn % 2 == 0);
                 for (i = 0; i < rn; i += 2) {
                     sprintf(p, "\\u%02x%02x",