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//@ compile-flags: -Zexperimental-default-bounds
#![feature(
auto_traits,
associated_type_defaults,
generic_const_items,
lang_items,
more_maybe_bounds,
negative_impls,
no_core,
rustc_attrs
)]
#![allow(incomplete_features)]
#![no_std]
#![no_core]
#[lang = "sized"]
trait Sized {}
#[lang = "legacy_receiver"]
trait LegacyReceiver {}
impl<T: ?Sized + ?Leak> LegacyReceiver for &T {}
impl<T: ?Sized> LegacyReceiver for &mut T {}
#[lang = "default_trait1"]
auto trait Leak {}
struct NonLeakS;
impl !Leak for NonLeakS {}
struct LeakS;
mod supertraits {
use crate::*;
trait MaybeLeakT1: ?Leak {}
trait MaybeLeakT2 where Self: ?Leak {}
impl MaybeLeakT1 for NonLeakS {}
impl MaybeLeakT2 for NonLeakS {}
}
mod maybe_self_assoc_type {
use crate::*;
trait TestBase1<T: ?Sized> {}
trait TestBase2<T: ?Leak + ?Sized> {}
trait Test1<T> {
type MaybeLeakSelf: TestBase1<Self> where Self: ?Leak;
//~^ ERROR the trait bound `Self: Leak` is not satisfied
type LeakSelf: TestBase1<Self>;
}
trait Test2<T> {
type MaybeLeakSelf: TestBase2<Self> where Self: ?Leak;
type LeakSelf: TestBase2<Self>;
}
trait Test3 {
type Leak1 = LeakS;
type Leak2 = NonLeakS;
//~^ ERROR the trait bound `NonLeakS: Leak` is not satisfied
}
trait Test4 {
type MaybeLeak1: ?Leak = LeakS;
type MaybeLeak2: ?Leak = NonLeakS;
}
trait Test5: ?Leak {
// ok, because assoc types have implicit where Self: Leak
type MaybeLeakSelf1: TestBase1<Self>;
type MaybeLeakSelf2: TestBase2<Self>;
}
}
mod maybe_self_assoc_const {
use crate::*;
const fn size_of<T: ?Sized>() -> usize {
0
}
trait Trait {
const CLeak: usize = size_of::<Self>();
const CNonLeak: usize = size_of::<Self>() where Self: ?Leak;
//~^ ERROR the trait bound `Self: Leak` is not satisfied
}
}
mod methods {
use crate::*;
trait Trait {
fn leak_foo(&self) {}
fn maybe_leak_foo(&self) where Self: ?Leak {}
fn mut_leak_foo(&mut self) {}
// there is no relax bound on corresponding Receiver impl
fn mut_maybe_leak_foo(&mut self) where Self: ?Leak {}
//~^ ERROR `&mut Self` cannot be used as the type of `self` without the `arbitrary_self_types`
}
impl Trait for NonLeakS {}
impl Trait for LeakS {}
fn foo() {
LeakS.leak_foo();
LeakS.maybe_leak_foo();
NonLeakS.leak_foo();
//~^ ERROR the trait bound `NonLeakS: Leak` is not satisfied
NonLeakS.maybe_leak_foo();
}
}
fn main() {}
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