From 78cf76a1ca3b8165eacc6b3f419ccd96977a7d9b Mon Sep 17 00:00:00 2001
From: wanghaoshuang <wanghaoshuang@baidu.com>
Date: Tue, 23 Oct 2018 21:57:43 +0800
Subject: [PATCH] fix linux compile

---
 paddle/fluid/framework/ir/node.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/paddle/fluid/framework/ir/node.cc b/paddle/fluid/framework/ir/node.cc
index d2f729afc..94bf8cb10 100644
--- a/paddle/fluid/framework/ir/node.cc
+++ b/paddle/fluid/framework/ir/node.cc
@@ -17,8 +17,9 @@ limitations under the License. */
 namespace paddle {
 namespace framework {
 namespace ir {
+// msvc15 don't support constexpr in correct way.
 #if !defined(_WIN32)
-constexpr char Node::kControlDepVarName[] =  "__control_var";
+constexpr char Node::kControlDepVarName[];
 #else
 const char Node::kControlDepVarName[] = "__control_var";
 #endif
-- 
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