File: derive-const-use.rs

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//@ known-bug: #110395

#![feature(const_trait_impl, const_cmp, const_default_impls, derive_const, effects)]

pub struct A;

impl const Default for A {
    fn default() -> A { A }
}

impl const PartialEq for A {
    fn eq(&self, _: &A) -> bool { true }
}

#[derive_const(Default, PartialEq)]
pub struct S((), A);

const _: () = assert!(S((), A) == S::default());

fn main() {}