From 210945f93909ab903e08456ef51a964841127b43 Mon Sep 17 00:00:00 2001
From: Dmitry Pentin <riotbr3aker@gmail.com>
Date: Thu, 14 Apr 2022 15:01:54 +0300
Subject: [PATCH] Fixed compilation error for older frameworks

---
 .../Profiles/Exif/ExifEncodedStringHelpers.cs    | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/ImageSharp/Metadata/Profiles/Exif/ExifEncodedStringHelpers.cs b/src/ImageSharp/Metadata/Profiles/Exif/ExifEncodedStringHelpers.cs
index 6e697029eb..4dc7f83985 100644
--- a/src/ImageSharp/Metadata/Profiles/Exif/ExifEncodedStringHelpers.cs
+++ b/src/ImageSharp/Metadata/Profiles/Exif/ExifEncodedStringHelpers.cs
@@ -79,8 +79,20 @@ namespace SixLabors.ImageSharp.Metadata.Profiles.Exif
             return CharacterCodeBytesLength + count;
         }
 
-        public static unsafe int Write(Encoding encoding, string value, Span<byte> destination) =>
-            encoding.GetBytes(value.AsSpan(), destination);
+        public static unsafe int Write(Encoding encoding, string value, Span<byte> destination)
+#if NETSTANDARD2_1_OR_GREATER || NETCOREAPP2_1_OR_GREATER || NET
+            => encoding.GetBytes(value.AsSpan(), destination);
+#else
+        {
+            fixed (char* c = value)
+            {
+                fixed (byte* b = destination)
+                {
+                    return encoding.GetBytes(c, value.Length, b, destination.Length);
+                }
+            }
+        }
+#endif
 
         private static bool TryDetect(ReadOnlySpan<byte> buffer, out CharacterCode code)
         {