[Mono-bugs] [Bug 75790][Nor] New - InvalidCastException from cloned synchronized Hashtable that doesn't come from original hashtable.

[bugzilla-daemon at bugzilla.ximian.com]

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Changed by nev at delap.com.

http://bugzilla.ximian.com/show_bug.cgi?id=75790

--- shadow/75790	2005-08-12 01:25:18.000000000 -0400
+++ shadow/75790.tmp.31446	2005-08-12 01:25:18.000000000 -0400
@@ -0,0 +1,62 @@
+Bug#: 75790
+Product: Mono: Class Libraries
+Version: 1.1
+OS: 
+OS Details: Linux-2.6.8-2-k7-i686-with-debian-3.1
+Status: NEW   
+Resolution: 
+Severity: 
+Priority: Normal
+Component: System
+AssignedTo: mono-bugs at ximian.com                            
+ReportedBy: Nev at Delap.com               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+URL: 
+Cc: 
+Summary: InvalidCastException from cloned synchronized Hashtable that doesn't come from original hashtable.
+
+{
+    // This works... (Ordinary hashtable, GetEnumerator on the hashtable)
+    Hashtable hashtable = new Hashtable();
+    hashtable["a"] = 1;
+    IEnumerator enumerator = hashtable.GetEnumerator();
+    enumerator.Reset();
+    enumerator.MoveNext();
+    DictionaryEntry dictionaryEntry = (DictionaryEntry)enumerator.Current;
+}
+{
+    // This works... (Synchronized hashtable, GetEnumerator on the 
+hashtable)
+    Hashtable hashtable = Hashtable.Synchronized(new Hashtable());
+    hashtable["a"] = 1;
+    IEnumerator enumerator = hashtable.GetEnumerator();
+    enumerator.Reset();
+    enumerator.MoveNext();
+    DictionaryEntry dictionaryEntry = (DictionaryEntry)enumerator.Current;
+}
+{
+#if Mono
+    try
+    {
+        // This doesn't work... (Synchronized hashtable, GetEnumerator on 
+clone of hashtable)
+        Hashtable hashtable = Hashtable.Synchronized(new Hashtable());
+        hashtable["a"] = 1;
+        IEnumerator enumerator2 = (hashtable.Clone() as 
+ICollection).GetEnumerator();
+        enumerator2.Reset();
+        enumerator2.MoveNext();
+        DictionaryEntry dictionaryEntry2 = (DictionaryEntry)
+enumerator2.Current; // << Throws.
+        Assert.Fail("When this fails it means they've fixed " +
+                    "this bug - http://bugzilla.ximian.com/show_bug.cgi?
+id=???");
+    }
+    catch (InvalidCastException)
+    {
+        Console.WriteLine("Please Note: Mono is (still) broken. See: 
+http://bugzilla.ximian.com/show_bug.cgi?id=???");
+    }
+#endif
+}