library;
import self as self;

static const field dynamic #errors = const <dynamic>["pkg/front_end/testcases/regress/issue_29978.dart:8:13: Error: A function expression can't have a name.
  foo(null, f() {});
            ^"]/* from null */;
static method foo(dynamic a, dynamic b) → dynamic
  return null;
static method main() → dynamic {
  self::foo(null, let final () → dynamic f = () → dynamic {} in f);
}