mail-archives/mono-bugs/2005-June/030288.html

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<TITLE> [Mono-bugs] [Bug 75233][Nor] New - constructor incomplete in
System.Runtime.Serialization.Formatter resulting in
NullReferenceException when using
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<H1>[Mono-bugs] [Bug 75233][Nor] New - constructor incomplete in
System.Runtime.Serialization.Formatter resulting in
NullReferenceException when using</H1>
<B>bugzilla-daemon at bugzilla.ximian.com</B>
<A HREF="mailto:mono-bugs%40lists.ximian.com?Subject=%5BMono-bugs%5D%20%5BBug%2075233%5D%5BNor%5D%20New%20-%20constructor%20incomplete%20in%0A%09System.Runtime.Serialization.Formatter%20resulting%20in%0A%09NullReferenceException%20when%20using&In-Reply-To=bug-75233%40chernobyl.ximian.com"
TITLE="[Mono-bugs] [Bug 75233][Nor] New - constructor incomplete in
System.Runtime.Serialization.Formatter resulting in
NullReferenceException when using">bugzilla-daemon at bugzilla.ximian.com
</A><BR>
<I>Sat Jun 11 13:48:40 EDT 2005</I>
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<PRE>Please do not reply to this email- if you want to comment on the bug, go to the
URL shown below and enter your comments there.
Changed by <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">dlacroix at erasme.org.</A>
<A HREF="http://bugzilla.ximian.com/show_bug.cgi?id=75233">http://bugzilla.ximian.com/show_bug.cgi?id=75233</A>
--- shadow/75233 2005-06-11 13:48:40.000000000 -0400
+++ shadow/75233.tmp.13434 2005-06-11 13:48:40.000000000 -0400
@@ -0,0 +1,70 @@
+Bug#: 75233
+Product: Mono: Class Libraries
+Version: 1.1
+OS: All
+OS Details:
+Status: NEW
+Resolution:
+Severity:
+Priority: Normal
+Component: System
+AssignedTo: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at ximian.com</A>
+ReportedBy: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">dlacroix at erasme.org</A>
+QAContact: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at ximian.com</A>
+TargetMilestone: ---
+URL:
+Cc:
+Summary: constructor incomplete in System.Runtime.Serialization.Formatter resulting in NullReferenceException when using
+
+Please fill in this template when reporting a bug, unless you know what you
+are doing.
+Description of Problem:
+The constructor of System.Runtime.Serialization.Formatter class is incomplete.
+
+It is it's job to initialize the following properties of the abstract class:
+
+protected ObjectIDGenerator m_idGenerator;
+protected Queue m_objectQueue;
+
+else, if you use the helper method GetNext and Schedule you will receive an
+exception because of nul value. Of course, you can initialie them in you
+Formatter implementation but I don't think it is the place to do that.
+
+Steps to reproduce the problem:
+1. Write a Formatter which inherit from System.Runtime.Serialization.Formatter
+2. Create new instance of you serializer
+3. Call the virtual Schedule method in your formatter
+
+
+
+Actual Results:
+Unhandled Exception: System.NullReferenceException: Object reference not
+set to an instance of an object
+in &lt;0x00038&gt; System.Runtime.Serialization.Formatter:Schedule (System.Object
+obj)
+
+
+Expected Results:
+no exception
+
+
+How often does this happen?
+every time
+
+
+Additional Information:
+Here is a proposed patch:
+
+--- ./mcs/class/corlib/System.Runtime.Serialization/Formatter.cs
+2005-03-30 23:21:42.000000000 +0200
++++ ./mcs/class/corlib/System.Runtime.Serialization/Formatter.cs.new
+2005-06-11 19:37:20.548182208 +0200
+@@ -43,6 +43,8 @@
+ {
+ protected Formatter ()
+ {
++ m_objectQueue = new Queue ();
++ m_idGenerator = new ObjectIDGenerator ();
+ }
+
+ protected ObjectIDGenerator m_idGenerator;
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