[Mono-bugs] [Bug 81341][Wis] New - null reference exception in XmlSerializer constructor

bugzilla-daemon at bugzilla.ximian.com bugzilla-daemon at bugzilla.ximian.com
Mon Apr 9 17:20:28 EDT 2007

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Changed by geoff at mmks.com.


--- shadow/81341	2007-04-09 17:20:28.000000000 -0400
+++ shadow/81341.tmp.23105	2007-04-09 17:20:28.000000000 -0400
@@ -0,0 +1,85 @@
+Bug#: 81341
+Product: Mono: Class Libraries
+Version: 1.2
+OS: Debian Woody
+OS Details: 
+Status: NEW   
+Priority: Wishlist
+Component: Sys.XML
+AssignedTo: atsushi at ximian.com                            
+ReportedBy: geoff at mmks.com               
+QAContact: mono-bugs at ximian.com
+TargetMilestone: ---
+Summary: null reference exception in XmlSerializer constructor
+Description of Problem:
+XmlSerializer throws a NullReferenceException while attempting to serialize
+type 'IList<string>'. Code compiled using Visual Studio 2005, .NET
+Framework 2.0.50727. Executed on linux kernel 2.6.8 with mono
+Steps to reproduce the problem:
+1. Build the following program in Visual Studio 2005
+using System;
+using System.Collections.Generic;
+using System.Text;
+namespace ConsoleApplication {
+    class Program {
+        static void Main(string[] args) {
+            System.Xml.Serialization.XmlSerializer s = new
+        }
+    }
+2. From linux, run 'mono ConsoleApplication.exe'
+Actual Results:
+Unhandled Exception: System.NullReferenceException: Object reference not
+set to an instance of an object
+  at System.Xml.Serialization.TypeData.get_ListItemType () [0x001b1] in
+  at System.Xml.Serialization.TypeData.get_ListItemTypeData () [0x00018] in
+  at System.Xml.Serialization.TypeData..ctor (System.Type type,
+System.String elementName, Boolean isPrimitive,
+System.Xml.Serialization.TypeData mappedType,
+System.Xml.Schema.XmlSchemaPatternFacet facet) [0x00000] 
+  at System.Xml.Serialization.TypeData..ctor (System.Type type,
+System.String elementName, Boolean isPrimitive) [0x00000] 
+  at System.Xml.Serialization.TypeTranslator.GetTypeData (System.Type
+runtimeType, System.String xmlDataType) [0x002a1] in
+  at System.Xml.Serialization.TypeTranslator.GetTypeData (System.Type type)
+[0x00000] in
+  at System.Xml.Serialization.XmlReflectionImporter.ImportTypeMapping
+(System.Type type, System.Xml.Serialization.XmlRootAttribute root,
+System.String defaultNamespace) [0x0003d] in
+  at System.Xml.Serialization.XmlSerializer..ctor (System.Type type,
+System.Xml.Serialization.XmlAttributeOverrides overrides, System.Type[]
+extraTypes, System.Xml.Serialization.XmlRootAttribute root, System.String
+defaultNamespace) [0x00000] 
+  at System.Xml.Serialization.XmlSerializer..ctor (System.Type type) [0x00000] 
+  at ConsoleApplication.Program.Main (System.String[] args) [0x00000] 
+How often does this happen? 
+Always on linux with mono. Never on native win32.
+Also occurs when built on linux using 'gmcs'.

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