From a2af04351f8b47d7e990327ee77976443549e4b1 Mon Sep 17 00:00:00 2001
From: Matthew Endsley <mendsley@gmail.com>
Date: Tue, 2 Feb 2021 07:06:35 -0800
Subject: [PATCH] Do not clear spans of zero length

---
 Hazel/Crypto/SpanCryptoExtensions.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Hazel/Crypto/SpanCryptoExtensions.cs b/Hazel/Crypto/SpanCryptoExtensions.cs
index b734961..03164ec 100644
--- a/Hazel/Crypto/SpanCryptoExtensions.cs
+++ b/Hazel/Crypto/SpanCryptoExtensions.cs
@@ -10,7 +10,10 @@ namespace Hazel.Crypto
         /// </summary>
         public static void SecureClear(this ByteSpan span)
         {
-            Array.Clear(span.GetUnderlyingArray(), span.Offset, span.Length);
+            if (span.Length > 0)
+            {
+                Array.Clear(span.GetUnderlyingArray(), span.Offset, span.Length);
+            }
         }
 
         /// <summary>
-- 
2.39.5