From 45dc65319136321db076fc23efebf99c1de1bc86 Mon Sep 17 00:00:00 2001
From: "J.D. Purcell" <jdpurcell@gmail.com>
Date: Tue, 25 Mar 2025 20:43:14 -0400
Subject: [PATCH] Fix regression with size calculation

---
 src/SharpCompress/IO/BufferedSubStream.cs | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/src/SharpCompress/IO/BufferedSubStream.cs b/src/SharpCompress/IO/BufferedSubStream.cs
index f435e3a9..e4c3def0 100755
--- a/src/SharpCompress/IO/BufferedSubStream.cs
+++ b/src/SharpCompress/IO/BufferedSubStream.cs
@@ -57,11 +57,7 @@ internal class BufferedSubStream(Stream stream, long origin, long bytesToRead)
                 RefillCache();
             }
 
-            if (count > _cacheLength)
-            {
-                count = _cacheLength;
-            }
-
+            count = Math.Min(count, _cacheLength - _cacheOffset);
             Buffer.BlockCopy(_cache, _cacheOffset, buffer, offset, count);
             _cacheOffset += count;
         }