pkg/front_end/testcases/inference/null_literal_should_not_infer_as_bottom.dart:15:5: Context: Write to f@348
  f = /*@returnType=Null*/ (/*@type=Object*/ x) => 'hello';
    ^
pkg/front_end/testcases/inference/null_literal_should_not_infer_as_bottom.dart:18:5: Context: Write to g@521
  g = 'hello';
    ^