// Test a trait (`Bar`) with a higher-ranked supertrait. #![allow(unconditional_recursion)] trait Foo<'tcx> { fn foo(&'tcx self) -> &'tcx isize; } trait Bar<'ccx>: for<'tcx> Foo<'tcx> { fn bar(&'ccx self) -> &'ccx isize; } fn want_foo_for_some_tcx<'x, F: Foo<'x>>(f: &'x F) { want_foo_for_some_tcx(f); want_foo_for_any_tcx(f); //~^ ERROR the trait bound `for<'tcx> F: Foo<'tcx>` is not satisfied } fn want_foo_for_any_tcx Foo<'tcx>>(f: &F) { want_foo_for_some_tcx(f); want_foo_for_any_tcx(f); } fn want_bar_for_some_ccx<'x, B: Bar<'x>>(b: &B) { want_foo_for_some_tcx(b); want_foo_for_any_tcx(b); want_bar_for_some_ccx(b); want_bar_for_any_ccx(b); //~^ ERROR the trait bound `for<'ccx> B: Bar<'ccx>` is not satisfied } fn want_bar_for_any_ccx Bar<'ccx>>(b: &B) { want_foo_for_some_tcx(b); want_foo_for_any_tcx(b); want_bar_for_some_ccx(b); want_bar_for_any_ccx(b); } fn main() {}