From 886bee972405bf54fe5c1dcb3f3168d5144c43cc Mon Sep 17 00:00:00 2001
From: Jason Nelson <jason@carbonmade.com>
Date: Tue, 17 Apr 2018 12:45:58 -0700
Subject: [PATCH] Fix offset when copying to buffer

---
 src/ImageSharp/Formats/Bmp/BmpDecoderCore.cs | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/ImageSharp/Formats/Bmp/BmpDecoderCore.cs b/src/ImageSharp/Formats/Bmp/BmpDecoderCore.cs
index 1d195f597a..40674ddf1c 100644
--- a/src/ImageSharp/Formats/Bmp/BmpDecoderCore.cs
+++ b/src/ImageSharp/Formats/Bmp/BmpDecoderCore.cs
@@ -285,12 +285,14 @@ namespace SixLabors.ImageSharp.Formats.Bmp
 
                             byte[] run = new byte[length];
 
-                            this.stream.Read(run, 0, length);
+                            this.stream.Read(run, 0, run.Length);
 
-                            run.AsSpan().CopyTo(buffer);
+                            run.AsSpan().CopyTo(buffer.Slice(count));
+
+                            count += run.Length;
 
                             // Absolute mode data is aligned to two-byte word-boundary
-                            int padding = length & 0;
+                            int padding = length & 1;
 
                             this.stream.Skip(padding);