Recover from missing arguments in new expression.

pkg/front_end/lib/src/fasta/kernel/body_builder.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library fasta.body_builder;
 
 import '../parser/parser.dart' show FormalParameterType, optional;
 
 import '../parser/error_kind.dart' show ErrorKind;
 
@@ skipping 1634 matching lines @@
   }
 
   @override
   void handleNewExpression(Token token) {
     debugEvent("NewExpression");
     Arguments arguments = pop();
     String name = pop();
     List<DartType> typeArguments = pop();
     var type = pop();
 
+    if (arguments == null) {
+      push(buildCompileTimeError("No arguments.", token.charOffset));
+      return;
+    }
+
     if (typeArguments != null) {
       assert(arguments.types.isEmpty);
       arguments.types.addAll(typeArguments);
     }
 
     String errorName;
     if (type is ClassBuilder) {
       Builder b = type.findConstructorOrFactory(name);
       Member target;
       if (b == null) {
@@ skipping 1012 matching lines @@
   } else if (node is TypeDeclarationBuilder) {
     return node.name;
   } else if (node is PrefixBuilder) {
     return node.name;
   } else if (node is ThisPropertyAccessor) {
     return node.name.name;
   } else {
     return internalError("Unhandled: ${node.runtimeType}");
   }
 }