Fix issue 4361 by checking in the resolver if the getter/setter exists.

lib/compiler/implementation/resolver.dart

Index: lib/compiler/implementation/resolver.dart
===================================================================
--- lib/compiler/implementation/resolver.dart	(revision 11766)
+++ lib/compiler/implementation/resolver.dart	(working copy)
@@ -1329,6 +1329,9 @@
         && target.kind == ElementKind.ABSTRACT_FIELD) {
       AbstractFieldElement field = target;
       target = field.getter;
+      if (Element.isInvalid(target) && !inInstanceContext) {
+        error(node.selector, MessageKind.CANNOT_RESOLVE_GETTER);

[kasperl, 2012/09/04 05:50:07]

This should definitely be coordinated with Karl, but maybe just adding a TODO
here would make him spot this point easily.

[ngeoffray, 2012/09/04 08:32:14]

Done.

+      }
     }
 
     bool resolvedArguments = false;
@@ -1394,6 +1397,9 @@
       AbstractFieldElement field = target;
       setter = field.setter;
       getter = field.getter;
+      if (Element.isInvalid(setter) && !inInstanceContext) {
+        error(node.selector, MessageKind.CANNOT_RESOLVE_SETTER);
+      }
     }
 
     visit(node.argumentsNode);