[mono-vb] VBNC on zlinux

Fri Apr 18 05:59:52 EDT 2008

I have made a minor change in vbnc which might work around this issue.

You can download a new rpm here:
http://mono.ximian.com/monobuild/snapshot/snapshot_packages/noarch/mono-basi
c/101099/mono-basic-101099-0.novell.noarch.rpm

Or sources:
http://mono.ximian.com/monobuild/snapshot/snapshot_sources/mono-basic/mono-b
asic-101099.tar.bz2

Though given that I don't have access to these systems, I haven't tested the
work-around.

Rolf

From: Barnett, James K [mailto:jim_barnett at uhc.com] 
Sent: jueves, 17 de abril de 2008 21:44
To: Rolf Bjarne Kvinge; mono-vb at lists.ximian.com
Cc: Timreck, Emily K
Subject: RE: [mono-vb] VBNC on zlinux

It looks like it is a match.   Here is the output from the test, and it
matches the bug exactly.

mfwl8041:/EMSASP/Emily # gmcs test.cs && mono test.exe
Sending: something

Unhandled Exception: System.NullReferenceException: Object reference not set
to an instance of an object
  at C.Test (System.Object a, System.Object b, System.Object c,
System.Object d, Token Name, System.Object e) [0x00000]
  at C.Test () [0x00000]
  at C.Main () [0x00000]

I'd gladly work with you on this.   If need be,  I could build a 31bit
system to run this, but the direction is supposed to be 64bit.

But, we do what we have to do.

Thanks Rolf,   let me know what you think.

Jim.

  _____  

From: Rolf Bjarne Kvinge [mailto:rolflists at ya.com] 
Sent: Thursday, April 17, 2008 2:13 PM
To: Barnett, James K; mono-vb at lists.ximian.com
Subject: RE: [mono-vb] VBNC on zlinux

Hi James,

This looks like a known mono problem, there's already a bug filed for this:
https://bugzilla.novell.com/show_bug.cgi?id=324807 

Could you try the last sample in that bug report and see if it's the same
issue?

Rolf

From: mono-vb-bounces at lists.ximian.com
[mailto:mono-vb-bounces at lists.ximian.com] On Behalf Of Barnett, James K
Sent: jueves, 17 de abril de 2008 17:57
To: mono-vb at lists.ximian.com
Subject: [mono-vb] VBNC on zlinux

Hello,

I am trying to move some asp.net pages from windows to linux on the
mainframe.

We are running Sles 9.3 in 64bit mode under z/VM 5.3 on an IBM z/10.

I downloaded and compiled mono 1.9 and so far everything seems to work well,
except when I try to

display VB.net files.    I get a VBNC Crash.    I suspected there might be
some problems with

my code,  so I set up the simplest example I could find,  (hello world) and
still get the same error.

It displays fine,  if I use straight html or language="C#"  but if I change
it to language="VB"  I get the following:

Compilation Error

Description: Error compiling a resource required to service this request.
Review your source file and modify it to fix this error. 

Error message: 

Already added type: _Default
/tmp/wwwrun-temp-aspnet-0/432466b2/12288f73.0.vb (12,18) : Warning
VBNC99998: Option Strict Off will probably fail.
Error : VBNC99999: vbnc crashed nearby this location in the source code.
Error : VBNC99999: Unexpected error: Object reference not set to an instance
of an object
at vbnc.ClassDeclaration.Init (vbnc.Attributes CustomAttributes, Modifiers
Modifiers, vbnc.TypeDeclaration DeclaringType, vbnc.MemberDeclarations
Members, Token Name, vbnc.TypeParameters TypeParameters,
vbnc.NonArrayTypeName Inherits, vbnc.TypeImplementsClauses
TypeImplementsClauses) [0x00000] 
at vbnc.Parser.ParseClassDeclaration (vbnc.ParsedObject Parent,
vbnc.Attributes Attributes, System.String Namespace) [0x00000] 
at vbnc.Parser.ParseTypeDeclaration (vbnc.ParsedObject Parent,
vbnc.Attributes Attributes, System.String Namespace) [0x00000] 
at vbnc.Parser.ParseAssemblyMembers (vbnc.AssemblyDeclaration Parent,
System.String RootNamespace, vbnc.MemberDeclarations declarations) [0x00000]

at vbnc.Parser.ParseAssemblyDeclaration (System.String RootNamespace,
vbnc.AssemblyDeclaration assembly) [0x00000] 
at vbnc.Parser.Parse (System.String RootNamespace, vbnc.AssemblyDeclaration
assembly) [0x00000] 
at vbnc.Compiler.Compile_Parse () [0x00000] 
Compilation took 00:00:02.2681430

File name: /EMSASP/Emily/hello1.aspx

Source File: 

Line 1:
'---------------------------------------------------------------------------
---
Line 2: ' <autogenerated>
Line 3: '     This code was generated by a tool.
Line 4: '     Mono Runtime Version: 2.0.50727.42
Line 5: '
Line 6: '     Changes to this file may cause incorrect behavior and will be
lost if 
Line 7: '     the code is regenerated.
Line 8: ' </autogenerated>
Line 9:
'---------------------------------------------------------------------------
---
Line 10: 
Line 11: Option Explicit On
Line 12: Option Strict Off
Line 13: 
Line 14: Imports System
Line 15: Imports System.Collections
Line 16: Imports System.Collections.Specialized
Line 17: Imports System.Configuration
Line 18: Imports System.Text
Line 19: Imports System.Text.RegularExpressions
Line 20: Imports System.Web
Line 21: Imports System.Web.Caching
Line 22: Imports System.Web.SessionState
Line 23: Imports System.Web.Security
Line 24: Imports System.Web.Profile
Line 25: Imports System.Web.UI
Line 26: Imports System.Web.UI.WebControls
Line 27: Imports System.Web.UI.WebControls.WebParts
Line 28: Imports System.Web.UI.HtmlControls
Line 29: 
Line 30: Namespace ASP
Line 31:     
Line 32:     Public Class hello1_aspx
Line 33:         Inherits System.Web.UI.Page
Line 34:         Implements System.Web.SessionState.IRequiresSessionState
Line 35:         
Line 36:         Private Shared __initialized As Boolean = false
Line 37:         
Line 38:         Private Shared __autoHandlers As Integer
Line 39:         
Line 40:         Public Sub New()
Line 41:             MyBase.New
Line 42:             CType(Me, System.Web.UI.Page).AppRelativeVirtualPath =
"~/test2/hello1.aspx"
Line 43:             If (ASP.hello1_aspx.__initialized = false) Then
Line 44:                 ASP.hello1_aspx.__initialized = true
Line 45:             End If
Line 46:         End Sub
Line 47:         
Line 48:         <System.Obsolete()>  _
Line 49:         Protected Overrides Property AutoHandlers() As Integer
Line 50:             Get
Line 51:                 Return ASP.hello1_aspx.__autoHandlers
Line 52:             End Get
Line 53:             Set
Line 54:                 ASP.hello1_aspx.__autoHandlers = Value
Line 55:             End Set
Line 56:         End Property
Line 57:         
Line 58:         Protected ReadOnly Property ApplicationInstance() As
System.Web.HttpApplication
Line 59:             Get
Line 60:                 Return CType(Me.Context.ApplicationInstance,
System.Web.HttpApplication)
Line 61:             End Get
Line 62:         End Property
Line 63:         
Line 64:         Protected ReadOnly Property Profile() As
System.Web.Profile.DefaultProfile
Line 65:             Get
Line 66:                 Return CType(Me.Context.Profile,
System.Web.Profile.DefaultProfile)
Line 67:             End Get
Line 68:         End Property
Line 69:         
Line 70:         Private Sub __RenderTree(ByVal __output As
System.Web.UI.HtmlTextWriter, ByVal parameterContainer As
System.Web.UI.Control)
Line 71:
__output.Write("<html>"&Microsoft.VisualBasic.ChrW(10)&"<head>"&Microsoft.Vi
sualBasic.ChrW(10)&"<title>ASP.NET Hello
World</title>"&Microsoft.VisualBasic.ChrW(10)&"</head>"&Microsoft.VisualBasi
c.ChrW(10)&"<body
bgcolor=""#FFFFFF"">"&Microsoft.VisualBasic.ChrW(10)&Microsoft.VisualBasic.C
hrW(10)&"<p>")
Line 72:             __output.Write( "Hello World!" )
Line 73:
__output.Write("</p>"&Microsoft.VisualBasic.ChrW(10)&Microsoft.VisualBasic.C
hrW(10)&"</body>"&Microsoft.VisualBasic.ChrW(10)&"</html>"&Microsoft.VisualB
asic.ChrW(10))
Line 74:         End Sub
Line 75:         
Line 76:         Private Sub __BuildControlTree(ByVal __ctrl As hello1_aspx)
Line 77:             Me.InitializeCulture()
Line 78:             __ctrl.SetRenderMethodDelegate(AddressOf
Me.__RenderTree)
Line 79:         End Sub
Line 80:         
Line 81:         Protected Overrides Sub FrameworkInitialize()
Line 82:             MyBase.FrameworkInitialize()
Line 83:             Me.TraceModeValue = System.Web.TraceMode.SortByTime
Line 84:             Me.Request.ValidateInput()
Line 85:             Me.__BuildControlTree(Me)
Line 86:         End Sub
Line 87:         
Line 88:         Public Overrides Function GetTypeHashCode() As Integer
Line 89:             Return 2117760274
Line 90:         End Function
Line 91:     End Class
Line 92: End Namespace

Jim Barnett

United Health Technologies

Mainframe Systems

763-744-3066

email: jim_barnett at uhc.com

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