From a0af0604d11ab1144e4be00ec73033e66013ab16 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Mon, 26 Jan 2026 12:11:16 +0000
Subject: [PATCH] Add disposal checks to RefillCache methods

Co-authored-by: adamhathcock <527620+adamhathcock@users.noreply.github.com>
---
 src/SharpCompress/IO/BufferedSubStream.cs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/SharpCompress/IO/BufferedSubStream.cs b/src/SharpCompress/IO/BufferedSubStream.cs
index 9ee22c05..d2302b3a 100755
--- a/src/SharpCompress/IO/BufferedSubStream.cs
+++ b/src/SharpCompress/IO/BufferedSubStream.cs
@@ -69,6 +69,11 @@ internal class BufferedSubStream : SharpCompressStream, IStreamStack
 
     private void RefillCache()
     {
+        if (_isDisposed)
+        {
+            throw new ObjectDisposedException(nameof(BufferedSubStream));
+        }
+
         var count = (int)Math.Min(BytesLeftToRead, _cache!.Length);
         _cacheOffset = 0;
         if (count == 0)
@@ -91,6 +96,11 @@ internal class BufferedSubStream : SharpCompressStream, IStreamStack
 
     private async ValueTask RefillCacheAsync(CancellationToken cancellationToken)
     {
+        if (_isDisposed)
+        {
+            throw new ObjectDisposedException(nameof(BufferedSubStream));
+        }
+
         var count = (int)Math.Min(BytesLeftToRead, _cache!.Length);
         _cacheOffset = 0;
         if (count == 0)