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//@ compile-flags: -Znext-solver --diagnostic-width=300
//@ edition: 2021
//@ revisions: pass fail
//@[pass] check-pass
#![feature(coroutine_trait, coroutines)]
use std::ops::Coroutine;
struct A;
struct B;
struct C;
fn needs_coroutine(_: impl Coroutine<A, Yield = B, Return = C>) {}
#[cfg(fail)]
fn main() {
needs_coroutine(
#[coroutine]
|| {
//[fail]~^ ERROR Coroutine<A>` is not satisfied
yield ();
},
);
}
#[cfg(pass)]
fn main() {
needs_coroutine(
#[coroutine]
|_: A| {
let _: A = yield B;
C
},
)
}
|
