TupleNode is always simple

diff --git a/Cython/Compiler/ExprNodes.py b/Cython/Compiler/ExprNodes.py
index 0f019829ba88eefd4661abea7d6f86e329fb2d76..aad7acaff860ad6e5ac1d7b83eecd1c006c85db4 100755 (executable)
--- a/Cython/Compiler/ExprNodes.py
+++ b/Cython/Compiler/ExprNodes.py
@@ -3997,6 +3997,10 @@ class TupleNode(SequenceNode):
                 self.is_temp = 0
                 self.is_literal = 1
 
+    def is_simple(self):
+        # either temp or constant => always simple
+        return True
+
     def calculate_result_code(self):
         if len(self.args) > 0:
             return self.result_code