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//@ run-pass
#![allow(unused_doc_comments)]
#![feature(auto_traits)]
#![feature(negative_impls)]
auto trait Auto {}
unsafe auto trait AutoUnsafe {}
impl !Auto for bool {}
impl !AutoUnsafe for bool {}
struct AutoBool(#[allow(dead_code)] bool);
impl Auto for AutoBool {}
unsafe impl AutoUnsafe for AutoBool {}
fn take_auto<T: Auto>(_: T) {}
fn take_auto_unsafe<T: AutoUnsafe>(_: T) {}
fn main() {
// Parse inside functions.
auto trait AutoInner {} //~ WARN trait `AutoInner` is never used
unsafe auto trait AutoUnsafeInner {} //~ WARN trait `AutoUnsafeInner` is never used
take_auto(0);
take_auto(AutoBool(true));
take_auto_unsafe(0);
take_auto_unsafe(AutoBool(true));
/// Auto traits are allowed in trait object bounds.
let _: &(dyn Send + Auto) = &0;
}
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