From 64bf752dcc107bcab054b8b93b845ee4431cb103 Mon Sep 17 00:00:00 2001
From: phlrain <phliuhongyu@126.com>
Date: Mon, 15 Apr 2019 08:45:18 +0000
Subject: [PATCH] fix concat; test=develop

---
 paddle/fluid/operators/concat_op.cc | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/paddle/fluid/operators/concat_op.cc b/paddle/fluid/operators/concat_op.cc
index 3ba3e5a9429..b1a6d66b80e 100644
--- a/paddle/fluid/operators/concat_op.cc
+++ b/paddle/fluid/operators/concat_op.cc
@@ -52,7 +52,7 @@ class ConcatOp : public framework::OperatorWithKernel {
           if (ctx->IsRuntime()) {
             out_dims[axis] += ins[i][j];
           } else {
-            if (out_dims[axis] == -1 || ins[i][j] == -1) {
+            if (ins[i][j] == -1) {
               out_dims[axis] = -1;
             } else {
               out_dims[axis] += ins[i][j];
-- 
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