library;
import self as self;

static method f() → dynamic sync* {
  invalid-expression "pkg/front_end/testcases/regress/issue_29983.dart:7:3: Error: 'sync*' and 'async*' can't return a value.
  return missing;
  ^";
}
static method g() → dynamic sync* 
  invalid-expression "pkg/front_end/testcases/regress/issue_29983.dart:11:14: Error: 'sync*' and 'async*' can't return a value.
g() sync* => dummy;
             ^";
static method h() → dynamic sync* {
  (() → dynamic => "return").call();
}
static method main() → dynamic {}