From b01cb9d047d5c2308a60bba7432af96b4b516278 Mon Sep 17 00:00:00 2001
From: Jason Nelson <jason@carbonmade.com>
Date: Tue, 17 Apr 2018 14:43:46 -0700
Subject: [PATCH] Favor Unsafe.As to pinning

---
 src/ImageSharp/Formats/Bmp/BmpFileHeader.cs | 8 ++++----
 src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs | 8 ++++----
 2 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/src/ImageSharp/Formats/Bmp/BmpFileHeader.cs b/src/ImageSharp/Formats/Bmp/BmpFileHeader.cs
index d94fefa05..e39a2af0e 100644
--- a/src/ImageSharp/Formats/Bmp/BmpFileHeader.cs
+++ b/src/ImageSharp/Formats/Bmp/BmpFileHeader.cs
@@ -2,6 +2,7 @@
 // Licensed under the Apache License, Version 2.0.
 
 using System;
+using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 namespace SixLabors.ImageSharp.Formats.Bmp
@@ -63,10 +64,9 @@ namespace SixLabors.ImageSharp.Formats.Bmp
 
         public unsafe void WriteTo(Span<byte> buffer)
         {
-            fixed (BmpFileHeader* pointer = &this)
-            {
-                MemoryMarshal.AsBytes(new ReadOnlySpan<BmpFileHeader>(pointer, 1)).CopyTo(buffer);
-            }
+            ref BmpFileHeader dest = ref Unsafe.As<byte, BmpFileHeader>(ref MemoryMarshal.GetReference(buffer));
+
+            dest = this;
         }
     }
 }
\ No newline at end of file
diff --git a/src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs b/src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs
index 3638ed35b..a088a9b13 100644
--- a/src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs
+++ b/src/ImageSharp/Formats/Bmp/BmpInfoHeader.cs
@@ -2,6 +2,7 @@
 // Licensed under the Apache License, Version 2.0.
 using System;
 using System.Buffers.Binary;
+using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 namespace SixLabors.ImageSharp.Formats.Bmp
@@ -152,10 +153,9 @@ namespace SixLabors.ImageSharp.Formats.Bmp
 
         public unsafe void WriteTo(Span<byte> buffer)
         {
-            fixed (BmpInfoHeader* pointer = &this)
-            {
-                MemoryMarshal.AsBytes(new ReadOnlySpan<BmpInfoHeader>(pointer, 1)).CopyTo(buffer);
-            }
+            ref BmpInfoHeader dest = ref Unsafe.As<byte, BmpInfoHeader>(ref MemoryMarshal.GetReference(buffer));
+
+            dest = this;
         }
     }
 }
\ No newline at end of file