commit 5336dfc16e38c9ced9dbc3b4ab138cc0828e507e
author Shad Storhaug <shad@shadstorhaug.com> Sun May 14 23:03:28 2023 +0700
committer Shad Storhaug <shad@shadstorhaug.com> Wed May 17 04:02:58 2023 +0700
tree 098bfcc80ab97465217e97f913a8274472b5c49a
parent a9c8388aa9fc696ec14f1aa88daa0512f804be32

Lucene.Net.Store.InputStreamDataInput: Allow double-dispose calls and guard against usage after Dispose(). See #265.

src/Lucene.Net/Store/InputStreamDataInput.cs

diff --git a/src/Lucene.Net/Store/InputStreamDataInput.cs b/src/Lucene.Net/Store/InputStreamDataInput.cs
index b946239..8b45056 100644
--- a/src/Lucene.Net/Store/InputStreamDataInput.cs
+++ b/src/Lucene.Net/Store/InputStreamDataInput.cs
@@ -1,5 +1,6 @@
 using System;
 using System.IO;
+using System.Threading;
 
 namespace Lucene.Net.Store
 {
@@ -26,6 +27,7 @@
     public class InputStreamDataInput : DataInput, IDisposable
     {
         private readonly Stream _is;
+        private int disposed = 0; // LUCENENET specific - allow double-dispose
 
         public InputStreamDataInput(Stream @is)
         {
@@ -65,6 +67,8 @@
 
         protected virtual void Dispose(bool disposing)
         {
+            if (0 != Interlocked.CompareExchange(ref this.disposed, 1, 0)) return; // LUCENENET specific - allow double-dispose
+
             if (disposing)
             {
                 _is.Dispose();