From 98a922e308db6d4d122cce55b67648251b3ed19d Mon Sep 17 00:00:00 2001
From: Shad Storhaug <shad@shadstorhaug.com>
Date: Thu, 19 Oct 2023 11:51:21 +0700
Subject: [PATCH] Lucene.Net.Util.PriorityQueue: Removed [Serializable]
 attribute. Binary serialization is obsolete in .NET 6+, and serialization
 didn't technically support extension anyway because it was missing the
 virtual GetObjectData and OnDeserialization methods and deserialization
 constructor.

---
 .../Util/TestPriorityQueue.cs                 | 26 -------------------
 src/Lucene.Net/Util/PriorityQueue.cs          |  3 ---
 2 files changed, 29 deletions(-)

diff --git a/src/Lucene.Net.Tests/Util/TestPriorityQueue.cs b/src/Lucene.Net.Tests/Util/TestPriorityQueue.cs
index 4b789a5a09..b41d658af7 100644
--- a/src/Lucene.Net.Tests/Util/TestPriorityQueue.cs
+++ b/src/Lucene.Net.Tests/Util/TestPriorityQueue.cs
@@ -1191,32 +1191,6 @@ public static void ValuePriorityQueue_Benchmarks()
             pq.Clear();
         }
 
-#if FEATURE_SERIALIZABLE
-
-        [Test, LuceneNetSpecific]
-        public void TestSerialization()
-        {
-            var queue = new IntegerQueue(10);
-            var expected = new int?[11];
-
-            for (int i = 0; i < 10; i++)
-            {
-                queue.Add(i);
-                expected[i + 1] = i;
-            }
-
-            Assert.AreEqual(10, queue.maxSize);
-            Assert.AreEqual(expected, queue.heap);
-            Assert.AreEqual(10, queue.Count);
-
-            var clone = Clone(queue);
-
-            Assert.AreEqual(10, clone.maxSize);
-            Assert.AreEqual(expected, clone.heap);
-            Assert.AreEqual(10, clone.Count);
-        }
-#endif
-
         private static int GetArrayHeapSize(int maxSize)
         {
             return PriorityQueue.GetArrayHeapSize(maxSize);
diff --git a/src/Lucene.Net/Util/PriorityQueue.cs b/src/Lucene.Net/Util/PriorityQueue.cs
index 9ab1f2f4ed..e0906122d8 100644
--- a/src/Lucene.Net/Util/PriorityQueue.cs
+++ b/src/Lucene.Net/Util/PriorityQueue.cs
@@ -482,9 +482,6 @@ public static int GetArrayHeapSize(int maxSize)
     /// <para/>
     /// @lucene.internal
     /// </summary>
-#if FEATURE_SERIALIZABLE
-    [Serializable]
-#endif
     public abstract class PriorityQueue<T>
     {
         private int size = 0;