blob: b9ba9708838555fed6fbe5a370f31935105efc05 [file] [log] [blame]
library test;
import 'dart:async';
T f<T>() => throw '';
class B<T> {
D<T> operator [](E<T> x) => throw '';
}
class C<U> extends B<Future<U>> {
E<Future<U>> operator [](Object x) => throw '';
void h() {}
}
class D<T> {}
class E<T> extends D<T> {}
main() {}