| Index: pkg/front_end/lib/src/fasta/builder/class_builder.dart | 
| diff --git a/pkg/front_end/lib/src/fasta/builder/class_builder.dart b/pkg/front_end/lib/src/fasta/builder/class_builder.dart | 
| index 991c2367d7eaafb31fb03ee4667288a12478d115..65903a77ab3c39547a30ed56009998b31e85ba5d 100644 | 
| --- a/pkg/front_end/lib/src/fasta/builder/class_builder.dart | 
| +++ b/pkg/front_end/lib/src/fasta/builder/class_builder.dart | 
| @@ -93,7 +93,7 @@ abstract class ClassBuilder<T extends TypeBuilder, R> | 
| } else if (current.isSetter && setterBuilder == null) { | 
| setterBuilder = current; | 
| } else { | 
| -          return new AmbiguousBuilder(builder, charOffset, fileUri); | 
| +          return new AmbiguousBuilder(name, builder, charOffset, fileUri); | 
| } | 
| current = current.next; | 
| } | 
|  |