rust/tests/ui/generator/issue-87142.rs

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2022-06-04 07:17:34 -05:00
// compile-flags: -Cdebuginfo=2
// build-pass
// Regression test for #87142
// This test needs the above flags and the "lib" crate type.
#![feature(type_alias_impl_trait, generator_trait, generators)]
#![crate_type = "lib"]
use std::ops::Generator;
pub trait GeneratorProviderAlt: Sized {
type Gen: Generator<(), Return = (), Yield = ()>;
fn start(ctx: Context<Self>) -> Self::Gen;
}
pub struct Context<G: 'static + GeneratorProviderAlt> {
pub link: Box<G::Gen>,
}
impl GeneratorProviderAlt for () {
type Gen = impl Generator<(), Return = (), Yield = ()>;
fn start(ctx: Context<Self>) -> Self::Gen {
move || {
match ctx {
_ => (),
}
yield ();
}
}
}