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`#[derive(Clone)]` is broken

use std::sync::Arc; struct NoClone; #[derive(Clone)] struct WrapArc<T>(Arc<T>); fn main() { let foo = WrapArc(Arc::new(NoClone)); let foo_ = foo.clone(); } Do you think this code should compile? What about the following code: struct AlwaysEq<T>(T); impl<T> PartialEq for AlwaysEq<T> { fn eq(&self, _other: &Self) -> bool { true } } impl<T> Eq for AlwaysEq<T> {} struct NotEq; #[derive(PartialEq, Eq)] struct WrapAlwaysEq<T>(AlwaysEq<T>); fn assert_is_eq(_: impl Eq) {} fn main() { let x = WrapAlwaysE...

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