33 lines
614 B
Rust
33 lines
614 B
Rust
|
// compile-flags: -Ztrait-solver=next
|
||
|
|
// edition: 2021
|
||
|
|
// revisions: pass fail
|
||
|
|
//[pass] check-pass
|
||
|
|
|
||
|
|
#![feature(generator_trait, generators)]
|
||
|
|
|
||
|
|
use std::ops::Generator;
|
||
|
|
|
||
|
|
struct A;
|
||
|
|
struct B;
|
||
|
|
struct C;
|
||
|
|
|
||
|
|
fn needs_generator(_: impl Generator<A, Yield = B, Return = C>) {}
|
||
|
|
|
||
|
|
#[cfg(fail)]
|
||
|
|
fn main() {
|
||
|
|
needs_generator(|| {
|
||
|
|
//[fail]~^ ERROR Generator<A>` is not satisfied
|
||
|
|
//[fail]~| ERROR as Generator<A>>::Yield == B`
|
||
|
|
//[fail]~| ERROR as Generator<A>>::Return == C`
|
||
|
|
yield ();
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
#[cfg(pass)]
|
||
|
|
fn main() {
|
||
|
|
needs_generator(|_: A| {
|
||
|
|
let _: A = yield B;
|
||
|
|
C
|
||
|
|
})
|
||
|
|
}
|