From bc3e0d6e01e71298bc99a87930dc654d83853574 Mon Sep 17 00:00:00 2001
From: minqiyang <minqiyang@baidu.com>
Date: Fri, 11 Jan 2019 13:18:24 +0800
Subject: [PATCH] Fix expand op compile time bug

test=develop
---
 paddle/fluid/operators/expand_op.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/paddle/fluid/operators/expand_op.cc b/paddle/fluid/operators/expand_op.cc
index 40f7c1c54c..d3cf094795 100644
--- a/paddle/fluid/operators/expand_op.cc
+++ b/paddle/fluid/operators/expand_op.cc
@@ -48,7 +48,7 @@ class ExpandOp : public framework::OperatorWithKernel {
     }
 
     // set the first dim to -1 in compile time
-    if (!ctx->IsRuntime()) {
+    if (!ctx->IsRuntime() && x_dims[0] < 0) {
       out_shape[0] = x_dims[0];
     }
 
-- 
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