| Index: pkg/front_end/lib/src/fasta/source/source_library_builder.dart | 
| diff --git a/pkg/front_end/lib/src/fasta/source/source_library_builder.dart b/pkg/front_end/lib/src/fasta/source/source_library_builder.dart | 
| index 88fb29feaf16286c3546855669753e2d43783b19..7eea602f26bffc2b0cea5a319d70f5895e22b984 100644 | 
| --- a/pkg/front_end/lib/src/fasta/source/source_library_builder.dart | 
| +++ b/pkg/front_end/lib/src/fasta/source/source_library_builder.dart | 
| @@ -455,6 +455,7 @@ abstract class SourceLibraryBuilder<T extends TypeBuilder, R> | 
| return typeCount; | 
| } | 
|  | 
| +  @override | 
| int resolveConstructors(_) { | 
| int count = 0; | 
| forEach((String name, Builder member) { | 
|  |