From ba958e989bb51e43eecc08ab577ae602eb24c091 Mon Sep 17 00:00:00 2001
From: Zac Hansen <xaxxon@gmail.com>
Date: Sun, 15 Apr 2018 00:54:15 -0700
Subject: [PATCH] added functional header

---
 tests/notnull_tests.cpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/notnull_tests.cpp b/tests/notnull_tests.cpp
index c3fb388..fd6e6c0 100644
--- a/tests/notnull_tests.cpp
+++ b/tests/notnull_tests.cpp
@@ -24,6 +24,7 @@
 #include <stdint.h>  // for uint16_t
 #include <string>    // for basic_string, operator==, string, operator<<
 #include <typeinfo>  // for type_info
+#include <functional>
 
 namespace gsl {
 struct fail_fast;