Fix build for gcc 9

Change-Id: Iba39f4a644d5f676e8f1606bbc283efe97f2dd9c

diff --git a/src/dpl/core/src/binary_queue.cpp b/src/dpl/core/src/binary_queue.cpp
index 44a11c4258655f6bd9e1057e24881df123cb13b7..704c5cefea5d6d9807a2a90b7f2abb88a7b91254 100644 (file)
--- a/src/dpl/core/src/binary_queue.cpp
+++ b/src/dpl/core/src/binary_queue.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2011 Samsung Electronics Co., Ltd All Rights Reserved
+ * Copyright (c) 2011-2020 Samsung Electronics Co., Ltd All Rights Reserved
  *
  *    Licensed under the Apache License, Version 2.0 (the "License");
  *    you may not use this file except in compliance with the License.
@@ -23,6 +23,7 @@
 #include <dpl/binary_queue.h>
 #include <dpl/assert.h>
 #include <algorithm>
+#include <functional>
 #include <malloc.h>
 #include <cstring>
 #include <new>