From f4491fa46d1583caa7f007a581995435a32f8dab Mon Sep 17 00:00:00 2001
From: fengjiayi <fengjiayi@baidu.com>
Date: Tue, 3 Oct 2017 16:34:21 -0700
Subject: [PATCH] Fix bug

---
 paddle/framework/backward.cc | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/paddle/framework/backward.cc b/paddle/framework/backward.cc
index 89583ade95..c0188c0e55 100644
--- a/paddle/framework/backward.cc
+++ b/paddle/framework/backward.cc
@@ -158,9 +158,8 @@ static std::unique_ptr<OperatorBase> BackwardRecursive(
         }
         insert_position.push_back(
             {dup_op.back(),
-             OpRegistry::CreateOp(
-                 "sum", {{"X", {insert_add_x}}, {"X", {insert_add_y}}},
-                 {{"Out", {insert_add_out}}}, {})});
+             OpRegistry::CreateOp("sum", {{"X", {insert_add_x, insert_add_y}}},
+                                  {{"Out", {insert_add_out}}}, {})});
       }
     }
 
@@ -200,7 +199,8 @@ static std::unique_ptr<OperatorBase> BackwardRecursive(
 
     // process recurrent gradient op as a special operator.
     if (forwardOp.Type() == "recurrent") {
-      // NOTE clean up cycle call somewhere (RNN's stepnet constains itself), or
+      // NOTE clean up cycle call somewhere (RNN's stepnet constains itself),
+      // or
       // this will result in infinite loop.
       const auto& rnnop =
           *static_cast<const operators::RecurrentOp*>(&forwardOp);
-- 
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