From 737ea05491fb0f0a95160db294f172d04e1ac925 Mon Sep 17 00:00:00 2001
From: Yu Yang <yuyang18@baidu.com>
Date: Tue, 1 Aug 2017 16:57:02 +0800
Subject: [PATCH] Use static_cast, Fix unittest

---
 paddle/framework/backward.cc      | 2 +-
 paddle/framework/backward_test.cc | 2 ++
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/paddle/framework/backward.cc b/paddle/framework/backward.cc
index c8fda8e260b..0da11b91a7f 100644
--- a/paddle/framework/backward.cc
+++ b/paddle/framework/backward.cc
@@ -120,7 +120,7 @@ std::shared_ptr<OperatorBase> BackwardRecursive(
            OpRegistry::CreateOp(
                "add", {dup_outputs}, {name},
                {{"input_format",
-                 std::vector<int>{0, (int)dup_outputs.size()}}})});
+                 std::vector<int>{0, static_cast<int>(dup_outputs.size())}}})});
     }
 
     insert_position.sort(
diff --git a/paddle/framework/backward_test.cc b/paddle/framework/backward_test.cc
index cb14ef95737..2e892f12fb5 100644
--- a/paddle/framework/backward_test.cc
+++ b/paddle/framework/backward_test.cc
@@ -181,6 +181,8 @@ TEST(Backward, simple_op_not_need_grad) {
 
   auto no_input_gop = f::Backward(*fwd, {"X", "b"});
   ASSERT_NE(no_input_gop, nullptr);
+  ASSERT_TRUE(no_input_gop->IsNetOp());
+  ASSERT_EQ(0UL, std::static_pointer_cast<f::NetOp>(no_input_gop)->ops_.size());
 }
 
 TEST(Backward, net_fc_backward_normal) {
-- 
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