From 77cffe2f92b908fc9d14041139b689caba365e34 Mon Sep 17 00:00:00 2001
From: Keith Holman <holmak@gmail.com>
Date: Mon, 15 Jan 2018 11:06:03 -0800
Subject: [PATCH] When a null C# string is passed to UTF8_ToNative(), return a
 null pointer instead of an empty C string.

---
 src/SDL2.cs | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/SDL2.cs b/src/SDL2.cs
index 1b64646..cfbf245 100644
--- a/src/SDL2.cs
+++ b/src/SDL2.cs
@@ -45,8 +45,15 @@ namespace SDL2
 
 		internal static byte[] UTF8_ToNative(string s)
 		{
-			// Add a null terminator. That's kind of it... :/
-			return System.Text.Encoding.UTF8.GetBytes(s + '\0');
+			if (s != null)
+			{
+				// Add a null terminator. That's kind of it... :/
+				return System.Text.Encoding.UTF8.GetBytes(s + '\0');
+			}
+			else
+			{
+				return null;
+			}
 		}
 
 		internal static unsafe string UTF8_ToManaged(IntPtr s, bool freePtr = false)