From c80018b850b25f2309c6a0e0c20cfdb094b60086 Mon Sep 17 00:00:00 2001
From: Bo Rydberg <2945606+bolry@users.noreply.github.com>
Date: Mon, 15 Mar 2021 10:53:40 +0100
Subject: [PATCH] string_utilities.h failes to compile with NO_ETL_STL (#354)

Lacks <ctype.h>
---
 include/etl/string_utilities.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/include/etl/string_utilities.h b/include/etl/string_utilities.h
index 2636a340..259a5664 100644
--- a/include/etl/string_utilities.h
+++ b/include/etl/string_utilities.h
@@ -38,6 +38,7 @@ SOFTWARE.
 #include "char_traits.h"
 #include "optional.h"
 
+#include <ctype.h>
 #include <stdint.h>
 
 namespace etl