From 4cdcf6e165bf43008188769ef8504bdde9229b6a Mon Sep 17 00:00:00 2001
From: rexy712 <rexy712@protonmail.com>
Date: Fri, 7 Jan 2022 23:03:36 -0800
Subject: [PATCH] Add missing include

---
 include/rexy/allocator.hpp | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/rexy/allocator.hpp b/include/rexy/allocator.hpp
index 2fa4afb..673794c 100644
--- a/include/rexy/allocator.hpp
+++ b/include/rexy/allocator.hpp
@@ -20,6 +20,7 @@
 #define REXY_DEFAULT_ALLOCATOR_HPP
 
 #include <cstdlib> //size_t
+#include <cstddef> //ptrdiff_t
 #include <type_traits> //true_type, false_type
 #include <new>
 #include <limits> //numeric_limits