[Mono-bugs] [Bug 442144] New: compiler crash when mcs fails to resolve base interfaces and referenced inside the type

[bugzilla_noreply at novell.com]

https://bugzilla.novell.com/show_bug.cgi?id=442144


           Summary: compiler crash when mcs fails to resolve base interfaces
                    and referenced inside the type
           Product: Mono: Compilers
           Version: unspecified
          Platform: i586
        OS/Version: Other
            Status: NEW
          Severity: Minor
          Priority: P5 - None
         Component: C#
        AssignedTo: mono-bugs at lists.ximian.com
        ReportedBy: atsushi at ximian.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---


The following code results in compiler crash.

--------
namespace Foo {
        public interface IBase {
                object X { get; }
        }
}

public interface IDerived<T> : Foo.IBase {
        T X { get; }
}

public class Test<T> {
        public class Y : IDerived<T>, IBase
        {
                public T X { get { return default (T); } }
                object Foo.IBase.X {
                        get { return default (T); }
                }
        }
}
--------

$ gmcs test.cs
test.cs(12,39): error CS0246: The type or namespace name `IBase' could not be
fo
und. Are you missing a using directive or an assembly reference?

Unhandled Exception: System.NullReferenceException: Object reference not set to
an instance of an object
  at Mono.CSharp.TypeContainer.CheckRecursiveDefinition
(Mono.CSharp.TypeContain
er tc) [0x00000]
  at Mono.CSharp.TypeContainer.DefineBaseTypes () [0x00000]
  at Mono.CSharp.TypeContainer.DefineType () [0x00000]
  at Mono.CSharp.TypeContainer.DefineNestedTypes () [0x00000]
  at Mono.CSharp.TypeContainer.DefineType () [0x00000]
  at Mono.CSharp.RootContext.ResolveTree () [0x00000]
  at Mono.CSharp.Driver.Compile () [0x00000]
  at Mono.CSharp.Driver.Main (System.String[] args) [0x00000]

Since the reference to IBase on line 12 is totally optional, it could be simply
removed.

It happened to IEnumerable<T> and IEnumerable (I experienced missing "using
System.Collections" only on the base interface reference).


-- 
Configure bugmail: https://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.