From 16c28d0818955cbff5d29b35416d3014641e46db Mon Sep 17 00:00:00 2001
From: Liangfu Chen <chenclf@gmail.com>
Date: Wed, 31 Jan 2018 00:56:50 +0800
Subject: [PATCH] improved empty set definition (#346)

fix similar problem like https://github.com/apache/incubator-mxnet/pull/4589/files .
---
 nnvm/src/top/op_common.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/nnvm/src/top/op_common.h b/nnvm/src/top/op_common.h
index ee6b7ced3..ae4388ade 100644
--- a/nnvm/src/top/op_common.h
+++ b/nnvm/src/top/op_common.h
@@ -293,7 +293,7 @@ inline std::vector<NodeEntry> MakeGradNode(
   const char* op_name,
   const NodePtr& n,
   std::vector<NodeEntry> inputs,
-  std::unordered_map<std::string, std::string> attr = {}) {
+  std::unordered_map<std::string, std::string> attr = {{}}) {
   NodePtr p = Node::Create();
   p->attrs.op = nnvm::Op::Get(op_name);
   p->attrs.name = n->attrs.name + "_grad";
-- 
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