[mono-vb] VBNC on zlinux

Barnett, James K jim_barnett at uhc.com
Thu Apr 17 11:56:52 EDT 2008

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

(0,0) : error VBNC_CRASH: Visual Basic.Net Compiler version
Copyright (C) 2004-2007 Rolf Bjarne Kvinge. All rights reserved.

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)
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
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
Line 59:             Get
Line 60:                 Return CType(Me.Context.ApplicationInstance,
Line 61:             End Get
Line 62:         End Property
Line 63:         
Line 64:         Protected ReadOnly Property Profile() As
Line 65:             Get
Line 66:                 Return CType(Me.Context.Profile,
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
Line 71:
t.VisualBasic.ChrW(10)&"<title>ASP.NET Hello
Line 72:             __output.Write( "Hello World!" )
Line 73:
Line 74:         End Sub
Line 75:         
Line 76:         Private Sub __BuildControlTree(ByVal __ctrl As
Line 77:             Me.InitializeCulture()
Line 78:             __ctrl.SetRenderMethodDelegate(AddressOf
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


email: jim_barnett at uhc.com


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