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// check-pass
#![feature(const_trait_impl)]
#![feature(const_precise_live_drops)]
use std::marker::Destruct;
const fn foo<T, E>(res: Result<T, E>) -> Option<T> where E: ~const Destruct {
match res {
Ok(t) => Some(t),
Err(_e) => None,
}
}
pub struct Foo<T>(T);
const fn baz<T: ~const Destruct, E: ~const Destruct>(res: Result<Foo<T>, Foo<E>>) -> Option<Foo<T>> {
foo(res)
}
fn main() {}
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