From a4d28107f409699ce0a10fb1cd560dfae4625bfa Mon Sep 17 00:00:00 2001
From: nihuini <nihuini@tencent.com>
Date: Fri, 1 Dec 2017 11:16:01 +0800
Subject: [PATCH] check clone empty

---
 src/layer.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/layer.cpp b/src/layer.cpp
index 36b1c4c98..a0666a586 100644
--- a/src/layer.cpp
+++ b/src/layer.cpp
@@ -54,6 +54,8 @@ int Layer::forward(const std::vector<Mat>& bottom_blobs, std::vector<Mat>& top_b
     for (int i = 0; i < (int)top_blobs.size(); i++)
     {
         top_blobs[i] = bottom_blobs[i].clone();
+        if (top_blobs[i].empty())
+            return -100;
     }
 
     return forward_inplace(top_blobs);
@@ -65,6 +67,8 @@ int Layer::forward(const Mat& bottom_blob, Mat& top_blob) const
         return -1;
 
     top_blob = bottom_blob.clone();
+    if (top_blob.empty())
+        return -100;
 
     return forward_inplace(top_blob);
 }