[Mono-bugs] [Bug 596910] New: Compiler error VBNC30037: Symbol is not valid with nullable syntax

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Thu Apr 15 08:57:48 EDT 2010


http://bugzilla.novell.com/show_bug.cgi?id=596910

http://bugzilla.novell.com/show_bug.cgi?id=596910#c0


           Summary: Compiler error VBNC30037: Symbol is not valid with
                    nullable syntax
    Classification: Mono
           Product: Mono: Compilers
           Version: SVN
          Platform: x86
        OS/Version: Ubuntu
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Basic
        AssignedTo: rkvinge at novell.com
        ReportedBy: mm_de at yahoo.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


User-Agent:       Opera/9.80 (Windows NT 6.0; U; de) Presto/2.5.24
Version/10.52

According to the spec vb.net compiler should allow a syntax like this:

  Dim test As Integer?

which is equivalent to
  Dim test As Nullable(Of Integer)

Short Example:

    Sub Main()
        Dim test As Integer?

        If Not test.HasValue Then
            test = 10
        End If
    End Sub

See section 7.1.1 in the Visual Basic Language Specification 9.0
http://www.microsoft.com/downloads/details.aspx?familyid=39DE1DD0-F775-40BF-A191-09F5A95EF500&displaylang=en


Reproducible: Always

Steps to Reproduce:
1. create module.vb
2. execute "vbnc module.vb"

Actual Results:  
mono vb.net compiler aborts with VBNC30037

Expected Results:  
compilation succeeds.

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