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ices/84073.rs: fixed with errors #1196

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Issue: rust-lang/rust#84073

use std::marker::PhantomData;

pub trait StatefulFuture<S> {}
pub struct Never<T>(PhantomData<T>);
impl<T> StatefulFuture<T> for Never<T> {}

pub struct RaceBuilder<F, S> {
    future: F,
    _phantom: PhantomData<S>,
}

impl<T, F> RaceBuilder<T, F>
where
    F: StatefulFuture<Option<T>>,
{
    pub fn when(self) {}
}

pub struct Race<T, R> {
    race: R,
    _phantom: PhantomData<T>,
}

impl<T, R> Race<T, R>
where
    R: Fn(RaceBuilder<T, Never<T>>),
{
    pub fn new(race: R) {}
}

fn main() {
    Race::new(|race| race.when());
}
=== stdout ===
=== stderr ===
error[E0282]: type annotations needed for `RaceBuilder<T, Never<T>>`
  --> /home/runner/work/glacier/glacier/ices/84073.rs:32:16
   |
32 |     Race::new(|race| race.when());
   |                ^^^^ consider giving this closure parameter the explicit type `RaceBuilder<T, Never<T>>`, where the type parameter `T` is specified

error: aborting due to previous error

For more information about this error, try `rustc --explain E0282`.
==============

=== stdout ===
=== stderr ===
error[E0282]: type annotations needed for `RaceBuilder<T, Never<T>>`
  --> /home/runner/work/glacier/glacier/ices/84073.rs:32:16
   |
32 |     Race::new(|race| race.when());
   |                ^^^^ consider giving this closure parameter the explicit type `RaceBuilder<T, Never<T>>`, where the type parameter `T` is specified

error: aborting due to previous error

For more information about this error, try `rustc --explain E0282`.
==============
@Alexendoo Alexendoo closed this in 1714f42 Mar 31, 2022
@Alexendoo Alexendoo deleted the autofix/ices/84073.rs branch March 31, 2022 21:53
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