---- Reported by mike.allen@durrusa.com 2006-09-07 12:23:31 MST ----

Description of Problem:

Get a NullReferenceException when compiling this simple example:

test.cs:

namespace Test {
    public delegate void Handler <TA> (TA sender) where TA: A <TA>;
    public class A <TA> where TA: A <TA> {
    }
}

Steps to reproduce the problem:
1. Compile the above using the command:

    gmcs -target:library -warn:4 -warnaserror test.cs

Actual Results:

Unhandled Exception: System.NullReferenceException: Object reference not
set to an instance of an object
in <0x000d7> Mono.CSharp.TypeArguments:Resolve (Mono.CSharp.EmitContext ec)
in <0x00021> Mono.CSharp.ConstructedType:DoResolveType
(Mono.CSharp.EmitContext ec)
in <0x0012d> Mono.CSharp.ConstructedType:ResolveConstructedType
(Mono.CSharp.EmitContext ec)
in <0x0000e> Mono.CSharp.ConstructedType:DoResolveAsTypeStep
(Mono.CSharp.EmitContext ec)
in <0x00011> Mono.CSharp.TypeExpr:ResolveAsTypeStep
(Mono.CSharp.EmitContext ec, Boolean silent)
in <0x00010> Mono.CSharp.Expression:ResolveAsTypeStep
(Mono.CSharp.EmitContext ec)
in <0x00114> Mono.CSharp.SimpleName:ResolveAsTypeStep
(Mono.CSharp.EmitContext ec, Boolean silent)
in <0x00010> Mono.CSharp.Expression:ResolveAsTypeStep
(Mono.CSharp.EmitContext ec)
in <0x002e8> Mono.CSharp.Constraints:Resolve (Mono.CSharp.EmitContext ec)
in <0x0002c> Mono.CSharp.TypeParameter:Resolve (Mono.CSharp.DeclSpace ds)
in <0x00124> Mono.CSharp.Delegate:DefineType ()
in <0x0034f> Mono.CSharp.RootContext:ResolveTree ()
in <0x00974> Mono.CSharp.Driver:MainDriver (System.String[] args)
in <0x00051> Mono.CSharp.Driver:Main (System.String[] args)

Expected Results:

Clean compile with no errors.

How often does this happen? 

Every time.

Additional Information:

Compiles clean using Microsoft C# compiler.
Looks similar to https://bugzilla.novell.com/show_bug.cgi?id=MONO79094, but I get different error.



---- Additional Comments From martin@ximian.com 2006-10-09 09:40:12 MST ----



*** This bug has been marked as a duplicate of https://bugzilla.novell.com/show_bug.cgi?id=MONO79094 ***


Unknown bug field "cf_op_sys_details" encountered while moving bug
   <cf_op_sys_details>Ubuntu 6.06</cf_op_sys_details>
Unknown bug field "cf_version_details" encountered while moving bug
   <cf_version_details>1.1.13.6-0ubuntu3</cf_version_details>
This bug was marked DUPLICATE in the database it was moved from.
    Changing resolution to "MOVED"