From 0536720f41ff6fd43b98a0eb9eb7cd8f0ece5d1e Mon Sep 17 00:00:00 2001
From: Kuang Fangjun <csukuangfj@gmail.com>
Date: Tue, 8 May 2018 10:36:44 +0800
Subject: [PATCH] fix issue #6387.

---
 include/caffe/syncedmem.hpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/caffe/syncedmem.hpp b/include/caffe/syncedmem.hpp
index 317ce29a257..8d650a34a8e 100644
--- a/include/caffe/syncedmem.hpp
+++ b/include/caffe/syncedmem.hpp
@@ -66,8 +66,8 @@ class SyncedMemory {
   void* mutable_cpu_data();
   void* mutable_gpu_data();
   enum SyncedHead { UNINITIALIZED, HEAD_AT_CPU, HEAD_AT_GPU, SYNCED };
-  SyncedHead head() { return head_; }
-  size_t size() { return size_; }
+  SyncedHead head() const { return head_; }
+  size_t size() const { return size_; }
 
 #ifndef CPU_ONLY
   void async_gpu_push(const cudaStream_t& stream);