From c809fee3b09c791b0c4a904d1c191c0cc2db4ef9 Mon Sep 17 00:00:00 2001
From: yuyang <yuyang18@baidu.com>
Date: Mon, 17 Sep 2018 08:39:43 +0000
Subject: [PATCH] Fix bug of Vector::Extend

---
 paddle/fluid/framework/mixed_vector.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/paddle/fluid/framework/mixed_vector.h b/paddle/fluid/framework/mixed_vector.h
index f2039ba7a5..4a2b378887 100644
--- a/paddle/fluid/framework/mixed_vector.h
+++ b/paddle/fluid/framework/mixed_vector.h
@@ -182,7 +182,7 @@ class Vector {
     void Extend(It begin, It end) {
       MutableCPU();
       cpu_.reserve((end - begin) + cpu_.size());
-      std::copy(begin, end, cpu_.begin());
+      std::copy(begin, end, std::back_inserter<std::vector<T>>(cpu_));
     }
 
     // resize the vector
-- 
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