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//@ run-pass
#![feature(fn_traits, unboxed_closures)]
trait Foo { fn dummy(&self) { }} //~ WARN method `dummy` is never used
struct Bar;
impl<'a> std::ops::Fn<(&'a (dyn Foo+'a),)> for Bar {
extern "rust-call" fn call(&self, _: (&'a dyn Foo,)) {}
}
impl<'a> std::ops::FnMut<(&'a (dyn Foo+'a),)> for Bar {
extern "rust-call" fn call_mut(&mut self, a: (&'a dyn Foo,)) { self.call(a) }
}
impl<'a> std::ops::FnOnce<(&'a (dyn Foo+'a),)> for Bar {
type Output = ();
extern "rust-call" fn call_once(self, a: (&'a dyn Foo,)) { self.call(a) }
}
struct Baz;
impl Foo for Baz {}
fn main() {
let bar = Bar;
let baz = &Baz;
bar(baz);
}
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