2006-03-16 Martin Baulig <martin@ximian.com>

	* generic.cs
	(ConstraintChecker.HasDefaultConstructor): If we're a TypeBuilder
	and don't have any instance constructors, also lookup in the base class.
	(TypeManager.IsNullableValueType): New public method.

	* typemanager.cs (TypeManager.MemberLookup_FindMembers): Clear the
	`BindingFlags.DeclaredOnly' flag and set `used_cache'.
	(TypeManager.TryGetBaseDefinition): Use DropGenericMethodArguments().

	* expression.cs (Unary.DoResolve): Use TypeManager.IsNullableValueType()
	instead of just TypeManager.IsNullableType() to determine whether
	a lifted operator exists.
	(UnaryMutator.DoResolve): Likewise.
	(Conditional.DoResolve): Likewise.
	(Binary.DoResolve): A lifted operator only exists if both operands
	are valuetypes and at least one of them is a nullable type.


svn path=/trunk/mcs/; revision=58071

1 files changed, 4 insertions, 2 deletions

diff --git a/mcs/gmcs/typemanager.cs b/mcs/gmcs/typemanager.cs
index f18162c3a9e..be693e3f893 100644
--- a/mcs/gmcs/typemanager.cs
+++ b/mcs/gmcs/typemanager.cs
@@ -1402,10 +1402,10 @@ public partial class TypeManager {
 
 			MemberList list;
 			Timer.StartTimer (TimerType.FindMembers);
-			list = tparam.FindMembers (mt, bf | BindingFlags.DeclaredOnly,
+			list = tparam.FindMembers (mt, bf & ~BindingFlags.DeclaredOnly,
 						   FilterWithClosure_delegate, name);
 			Timer.StopTimer (TimerType.FindMembers);
-			used_cache = false;
+			used_cache = true;
 			return (MemberInfo []) list;
 		}
 
@@ -1805,6 +1805,8 @@ public partial class TypeManager {
 
 	static public MethodBase TryGetBaseDefinition (MethodBase m)
 	{
+		m = DropGenericMethodArguments (m);
+
 		return (MethodBase) method_overrides [m];
 	}