File: higher-ranked-fn-type.rs

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//@ revisions: quiet verbose
//@ [verbose]compile-flags: -Zverbose-internals

#![allow(unused_parens)]

trait Foo {
    type Assoc;
}

fn called()
where
    for<'b> fn(&'b ()): Foo,
{
}

fn caller()
where
    (for<'a> fn(&'a ())): Foo,
{
    called()
    //[quiet]~^ ERROR the trait bound `for<'b> fn(&'b ()): Foo` is not satisfied
    //[verbose]~^^ ERROR the trait bound `for<Region(
}

fn main() {}