[rustc.git] / src / tools / clippy / tests / ui / crashes / ice-6539.rs

// The test for the ICE 6539: https://github.com/rust-lang/rust-clippy/issues/6539.
// The cause is that `zero_sized_map_values` used `layout_of` with types from type aliases,
// which is essentially the same as the ICE 4968.
// Note that only type aliases with associated types caused the crash this time,
// not others such as trait impls.

use std::collections::{BTreeMap, HashMap};

pub trait Trait {
    type Assoc;
}

type TypeAlias<T> = HashMap<(), <T as Trait>::Assoc>;
type TypeAlias2<T> = BTreeMap<(), <T as Trait>::Assoc>;

fn main() {}
Commit	Line	Data
f20569fa XL	1	// The test for the ICE 6539: https://github.com/rust-lang/rust-clippy/issues/6539.
	2	// The cause is that `zero_sized_map_values` used `layout_of` with types from type aliases,
	3	// which is essentially the same as the ICE 4968.
	4	// Note that only type aliases with associated types caused the crash this time,
	5	// not others such as trait impls.
	6
	7	use std::collections::{BTreeMap, HashMap};
	8
	9	pub trait Trait {
	10	type Assoc;
	11	}
	12
	13	type TypeAlias<T> = HashMap<(), <T as Trait>::Assoc>;
	14	type TypeAlias2<T> = BTreeMap<(), <T as Trait>::Assoc>;
	15
	16	fn main() {}