[Mono-bugs] [Bug 348646] New: Crash when setting ApplicationSettingsBase property if other value if null

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=348646


           Summary: Crash when setting ApplicationSettingsBase property if
                    other value if null
           Product: Mono: Class Libraries
           Version: 1.2.6
          Platform: x86
        OS/Version: Windows Server 2003
            Status: NEW
          Severity: Major
          Priority: P5 - None
         Component: System
        AssignedTo: mono-bugs at ximian.com
        ReportedBy: justin.cherniak at gmail.com
         QAContact: mono-bugs at ximian.com
          Found By: ---


Created an attachment (id=187586)
 --> (https://bugzilla.novell.com/attachment.cgi?id=187586)
Test case that demonstrates the bug

Overview Description: 
When setting a setting on an ApplicationSettingsBase, if another setting which
has the SettingsSerializeAs(SettingsSerializeAs.Xml) attribute on it is null, a
crash occurs.

Steps to Reproduce: 
See attached test case

Actual Results: 
The application crashed with the following stack trace:

Unhandled Exception: System.ArgumentNullException: Argument cannot be null.
Parameter name: s
  at System.IO.StringReader..ctor (System.String s) [0x00031] in
C:\cygwin\tmp\monobuild\build\BUILD\mono-1.2.6\mcs\class\corlib\System.IO\StringReader.cs:55
  at (wrapper remoting-invoke-with-check) System.IO.StringReader:.ctor (string)
  at Mono.Xml2.XmlTextReader..ctor (System.String xmlFragment, XmlNodeType
fragType, System.Xml.XmlParserContext context) [0x00000] in
C:\cygwin\tmp\monobuild\build\BUILD\mono-1.2.6\mcs\class\System.XML\System.Xml\XmlTextReader.cs:166
  at System.Xml.XmlTextReader..ctor (System.String xmlFragment, XmlNodeType
fragType, System.Xml.XmlParserContext context) [0x00006] in
C:\cygwin\tmp\monobuild\build\BUILD\mono-1.2.6\mcs\class\System.XML\System.Xml\XmlTextReader2.cs:119
  at System.Xml.XmlDocumentFragment.set_InnerXml (System.String value)
[0x00081] in
C:\cygwin\tmp\monobuild\build\BUILD\mono-1.2.6\mcs\class\System.XML\System.Xml\XmlDocumentFragment.cs:69
  at System.Configuration.CustomizableFileSettingsProvider.SaveProperties
(System.Configuration.ExeConfigurationFileMap exeMap,
System.Configuration.SettingsPropertyValueCollection collection,
ConfigurationUserLevel level, System.Configuration.SettingsContext context,
Boolean checkUserLevel) [0x00191] in
C:\cygwin\tmp\monobuild\build\BUILD\mono-1.2.6\mcs\class\System\System.Configuration\CustomizableFileSettingsProvider.cs:597
  at System.Configuration.CustomizableFileSettingsProvider.SetPropertyValues
(System.Configuration.SettingsContext context,
System.Configuration.SettingsPropertyValueCollection collection) [0x00041] in
C:\cygwin\tmp\monobuild\build\BUILD\mono-1.2.6\mcs\class\System\System.Configuration\CustomizableFileSettingsProvider.cs:692
  at System.Configuration.LocalFileSettingsProvider.SetPropertyValues
(System.Configuration.SettingsContext context,
System.Configuration.SettingsPropertyValueCollection values) [0x00000] in
C:\cygwin\tmp\monobuild\build\BUILD\mono-1.2.6\mcs\class\System\System.Configuration\LocalFileSettingsProvider.cs:95
  at System.Configuration.ApplicationSettingsBase.Save () [0x00099] in
C:\cygwin\tmp\monobuild\build\BUILD\mono-1.2.6\mcs\class\System\System.Configuration\ApplicationSettingsBase.cs:121
  at Program.Main (System.String[] args) [0x00000]

Expected Results: 
The program shouldn't crash (running on MS.NET does not crash).

Build Date & Platform: 
Mono JIT compiler version 1.2.6 (tarball)
Copyright (C) 2002-2007 Novell, Inc and Contributors. www.mono-project.com
        TLS:           normal
        GC:            Included Boehm (with typed GC)
        SIGSEGV:       normal
        Notification:  Thread + polling
        Architecture:  x86
        Disabled:      none


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