[Mono-bugs] [Bug 61515][Wis] Changed - NullReference exception in WaitOne()

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Changed by michi@zeroc.com.

http://bugzilla.ximian.com/show_bug.cgi?id=61515

--- shadow/61515	2004-07-14 00:42:07.000000000 -0400
+++ shadow/61515.tmp.26247	2004-07-14 01:02:12.000000000 -0400
@@ -1,14 +1,14 @@
 Bug#: 61515
 Product: Mono: Runtime
 Version: unspecified
-OS: 
+OS: unknown
 OS Details: 
 Status: NEW   
 Resolution: 
-Severity: 
+Severity: Unknown
 Priority: Wishlist
 Component: misc
 AssignedTo: mono-bugs@ximian.com                            
 ReportedBy: michi@zeroc.com               
 QAContact: mono-bugs@ximian.com
 TargetMilestone: ---
@@ -34,6 +34,36 @@
 IceInternal.BasicStream:getUserExceptionFactory (string)
 in [0x00015] (at /home/michi/src/icecs/src/Ice/BasicStream.cs:1320)
 IceInternal.BasicStream:throwException ()
 
 The corresponding code is very simple, and runs fine with the .NET run
 time. (It works fine when compiled with either Visual C# or mcs.)
+
+------- Additional Comments From michi@zeroc.com  2004-07-14 01:02 -------
+Sorry, incomplete report above, I hit return too soon by mistake...
+
+The code that causes the problem is absolutely trivial:
+
+        private static Mutex _exceptionFactoryMutex = new Mutex();
+
+        private UserExceptionFactory getUserExceptionFactory(string id)
+        {
+            _exceptionFactoryMutex.WaitOne();
+            factory = (UserExceptionFactory)_exceptionFactories[id];
+            _exceptionFactoryMutex.ReleaseMutex();
+
+            // ...       
+
+            return factory;
+        }
+
+        private void setUserExceptionFactory(UserExceptionFactory f,
+string id)
+        {
+            _exceptionFactoryMutex.WaitOne();
+            _exceptionFactories[id] = f;
+            _exceptionFactoryMutex.ReleaseMutex();
+        }
+
+Cheers,
+
+Michi.