rust/tests/ui/coroutine/partial-drop.rs

//@ check-pass
#![feature(negative_impls, coroutines, stmt_expr_attributes)]

struct Foo;
impl !Send for Foo {}

struct Bar {
    foo: Foo,
    x: i32,
}

fn main() {
    assert_send(
        #[coroutine]
        || {
            let guard = Bar { foo: Foo, x: 42 };
            drop(guard.foo);
            yield;
        },
    );

    assert_send(
        #[coroutine]
        || {
            let mut guard = Bar { foo: Foo, x: 42 };
            drop(guard);
            guard = Bar { foo: Foo, x: 23 };
            yield;
        },
    );

    assert_send(
        #[coroutine]
        || {
            let guard = Bar { foo: Foo, x: 42 };
            let Bar { foo, x } = guard;
            drop(foo);
            yield;
        },
    );
}

fn assert_send<T: Send>(_: T) {}