Patch #1550786: ellipsis literal.
diff --git a/Parser/Python.asdl b/Parser/Python.asdl
index 27f65b4..b62197e 100644
--- a/Parser/Python.asdl
+++ b/Parser/Python.asdl
@@ -63,6 +63,7 @@
 			 expr? starargs, expr? kwargs)
 	     | Num(object n) -- a number as a PyObject.
 	     | Str(string s) -- need to specify raw, unicode, etc?
+	     | Ellipsis
 	     -- other literals? bools?
 
 	     -- the following expression can appear in assignment context
@@ -77,7 +78,7 @@
 
 	expr_context = Load | Store | Del | AugLoad | AugStore | Param
 
-	slice = Ellipsis | Slice(expr? lower, expr? upper, expr? step) 
+	slice = Slice(expr? lower, expr? upper, expr? step) 
 	      | ExtSlice(slice* dims) 
 	      | Index(expr value)