From b213c8970093811db1006180b268f6290e09c4f4 Mon Sep 17 00:00:00 2001
From: Cristian Morales Vega <cristian@samknows.com>
Date: Fri, 8 Nov 2019 16:37:23 +0000
Subject: [PATCH] Add missing #include if built with GSL_USE_STD_BYTE=1

cstddef was being included to detect whether GSL_USE_STD_BYTE should be
set to 0 or 1. But if the user provided GSL_USE_STD_BYTE no detection is
required and the header was never included.
---
 include/gsl/gsl_byte | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/include/gsl/gsl_byte b/include/gsl/gsl_byte
index c2fc572..9e68d0d 100644
--- a/include/gsl/gsl_byte
+++ b/include/gsl/gsl_byte
@@ -87,6 +87,10 @@
 #define byte_may_alias
 #endif // defined __clang__ || defined __GNUC__
 
+#if GSL_USE_STD_BYTE
+#include <cstddef>
+#endif
+
 namespace gsl
 {
 #if GSL_USE_STD_BYTE