rust/tests/ui/coroutine/ref-escapes-but-not-over-yield.rs
Oli Scherer aef0f4024a Error on using yield without also using #[coroutine] on the closure
And suggest adding the `#[coroutine]` to the closure
2024-04-24 08:05:29 +00:00

18 lines
462 B
Rust

#![feature(coroutines, stmt_expr_attributes)]
fn foo(x: &i32) {
// In this case, a reference to `b` escapes the coroutine, but not
// because of a yield. We see that there is no yield in the scope of
// `b` and give the more generic error message.
let mut a = &3;
let mut b = #[coroutine]
move || {
yield ();
let b = 5;
a = &b;
//~^ ERROR borrowed data escapes outside of coroutine
};
}
fn main() {}