File: feature-gate-freeze-impls.rs

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#![feature(freeze, negative_impls)]

use std::marker::Freeze;

struct Foo;

unsafe impl Freeze for Foo {}
//~^ explicit impls for the `Freeze` trait are not permitted

struct Bar;

impl !Freeze for Bar {}
//~^ explicit impls for the `Freeze` trait are not permitted

fn main() {}