From de025e0c472bdb2fcabbc9dc2fd443b91ab28e28 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bart=C5=82omiej=20Burdukiewicz?=
 <bartlomiej.burdukiewicz@gmail.com>
Date: Wed, 24 May 2017 18:52:20 +0200
Subject: [PATCH] fix compilation for GCC 7.1.0

---
 src/internal/containers.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/internal/containers.h b/src/internal/containers.h
index 8da4298..78dd212 100644
--- a/src/internal/containers.h
+++ b/src/internal/containers.h
@@ -23,6 +23,7 @@
 #include "internal.h"
 
 #include <algorithm>
+#include <functional>
 #include <vector>
 
 /**