TupleExp.optimize UnrolledLoopStatement.ctor UnrolledLoopStatement.semantic UnrolledLoopStatement.blockExit OrOrExp.checkSideEffect FuncExp.syntaxCopy FuncLiteralDeclaration.syntaxCopy WhileStatement.hasBreak StructInitializer.toExpression StructLiteralExp.ctor StructLiteralExp.optimize BinExp.commonSemanticAssign ModAssignExp.opId Argument.isLazyArray CommaExp.implicitConvTo CommaExp.castTo TypeClass.isBaseOf createTypeInfoArray TypeTuple.getTypeInfoDeclaration TypeInfoTupleDeclaration.ctor TypeNext.constConv XorExp.implicitConvTo TemplateParameter.isTemplateValueParameter

--- a/dmd/CommaExp.d	Sat Aug 21 13:28:16 2010 +0400
+++ b/dmd/CommaExp.d	Sat Aug 21 14:16:53 2010 +0400
@@ -78,12 +78,25 @@
 	
     MATCH implicitConvTo(Type t)
 	{
-		assert(false);
+		return e2.implicitConvTo(t);
 	}
 	
     Expression castTo(Scope sc, Type t)
 	{
-		assert(false);
+		Expression e2c = e2.castTo(sc, t);
+		Expression e;
+
+		if (e2c != e2)
+		{
+			e = new CommaExp(loc, e1, e2c);
+			e.type = e2c.type;
+		}
+		else
+		{	
+			e = this;
+			e.type = e2.type;
+		}
+		return e;
 	}
 	
     Expression optimize(int result)