[Mono-bugs] [Bug 550404] New: Compiling code with generics, gmcs 2.4.2.3 raises System.NullReferenceException: Object reference not set to an instance of an object

[bugzilla_noreply at novell.com]

http://bugzilla.novell.com/show_bug.cgi?id=550404


           Summary: Compiling code with generics, gmcs 2.4.2.3 raises
                    System.NullReferenceException: Object reference not
                    set to an instance of an object
    Classification: Mono
           Product: Mono: Compilers
           Version: 2.4.x
          Platform: Macintosh
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: C#
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: grant at xielliesoft.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


Created an attachment (id=324327)
 --> (http://bugzilla.novell.com/attachment.cgi?id=324327)
C# file to reproduce the problem

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_5_8; en-us)
AppleWebKit/531.9 (KHTML, like Gecko) Version/4.0.3 Safari/531.9

I have Mono 2.4.2.3 on Mac OS X 10.5 (although I've also seen this on Ubuntu
Jaunty). When building the project at

http://research.microsoft.com/en-us/downloads/73099525-fd8d-4966-9b93-574e6023147f/

I run into a gmcs crash similar to Bug 480100. However, I've verified that the
test file in that bug compiles successfully, so this is a new bug rather than a
regression.

Reproducible: Always

Steps to Reproduce:
1. Download the attached test.cs.
2. Compile with

gmcs  "/out:test.dll" "/r:System.dll" "/r:System.Core.dll"
"/r:System.Xml.Linq.dll" "/r:System.Data.DataSetExtensions.dll"
"/r:System.Data.dll" "/r:System.Xml.dll" /t:library test.cs

Actual Results:  
I'll attach the full output, but the first few lines are:

Exception caught by the compiler while emitting:
   Block that caused the problem begin at: test.cs(10,5):
System.NullReferenceException: Object reference not set to an instance of an
object
Internal compiler error at test.cs(9,14):: exception caught while emitting
MethodBuilder [PINQueryable`1::ExponentialMechanism]

Unhandled Exception: System.NullReferenceException: Object reference not set to
an instance of an object
  at Mono.CSharp.HoistedVariable.GetFieldExpression (Mono.CSharp.EmitContext
ec) [0x00000] 
  at Mono.CSharp.HoistedVariable+ExpressionTreeProxy.Emit
(Mono.CSharp.EmitContext ec) [0x00000] 


Expected Results:  
Successful compilation ;)

-- 
Configure bugmail: http://bugzilla.novell.com/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the QA contact for the bug.
You are the assignee for the bug.