[Mono-bugs] [Bug 591272] New: VBNC99997 - Compilation error when performing ToString() on element of a multidimensional array of Integers

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http://bugzilla.novell.com/show_bug.cgi?id=591272

http://bugzilla.novell.com/show_bug.cgi?id=591272#c0


           Summary: VBNC99997 - Compilation error when performing
                    ToString() on element of a multidimensional array of
                    Integers
    Classification: Mono
           Product: Mono: Compilers
           Version: 2.4.x
          Platform: 32bit
        OS/Version: Ubuntu
            Status: NEW
          Severity: Major
          Priority: P5 - None
         Component: Basic
        AssignedTo: rkvinge at novell.com
        ReportedBy: wielef at gmail.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


User-Agent:       Mozilla/5.0 (X11; U; Linux i686; pl-PL; rv:1.9.1.8)
Gecko/20100214 Ubuntu/9.10 (karmic) Firefox/3.5.8

This simple peace of code causes VB compiler error:

======== BAD CODE - BEGIN ========
Imports System
Imports System.Collections
Module Module1
    Sub Main(ByVal args As String())
        Dim matrice As Integer(,) = New Integer(2, 2) {}
        matrice(0, 0) = 1
        Dim str As String = matrice(0, 0).ToString() 'Bad line!
        Console.WriteLine(str)
    End Sub
End Module
======== BAD CODE - END ========

The problem is "matrice(0, 0).ToString()". When I use some temporal variable to
get an element from array, then compiler works fine. For example:


======== CHANGED CODE WHICH WORKS PROPERLY - BEGIN ========
Imports System
Imports System.Collections
Module Module1
    Sub Main(ByVal args As String())
        Dim matrice As Integer(,) = New Integer(2, 2) {}
        matrice(0, 0) = 1
        'Dim str As String = matrice(0, 0).ToString()  'old line
        Dim tmp As Integer = matrice(0, 0)             'new line #1
        Dim str As String = tmp.ToString()             'new line #2
        Console.WriteLine(str)
    End Sub
End Module
======== CHANGED CODE WHICH WORKS PROPERLY ========


Reproducible: Always

Steps to Reproduce:
1. Save BAD CODE to a file, for example source.vb
2. vbnc source.vb
Actual Results:  
The compiler outputs:

Visual Basic.Net Compiler version 0.0.0.5914 (Mono 2.4.2 - r)
Copyright (C) 2004-2008 Rolf Bjarne Kvinge. All rights reserved.


/home/wiele/tmp/<MyGenerator> (1,1) : Error VBNC99997: You've encountered
something in the compiler which is not implemented. Please file a bug (see
instructions here: http://mono-project.com/Bugs)
There were 1 errors and 0 warnings.
Compilation took 00:00:01.1494360


Expected Results:  
Compiler should successfully compile the program. 
Executed program should write "1" to stdout.

I've tried to compile the code on Ubuntu, Debian and Gentoo - the results were
the same under every OS.

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