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|
//@ build-pass
#![feature(coroutines, negative_impls, stmt_expr_attributes)]
#![allow(dropping_references, dropping_copy_types)]
macro_rules! type_combinations {
(
$( $name:ident => { $( $tt:tt )* } );*
) => { $(
mod $name {
pub mod unsync {
$( $tt )*
impl !Sync for Client {}
}
pub mod unsend {
$( $tt )*
impl !Send for Client {}
}
}
// This is the same bug as issue 57017, but using yield instead of await
{
let g = #[coroutine] move || match drop(&$name::unsync::Client::default()) {
_status => yield,
};
assert_send(g);
}
// This tests that `Client` is properly considered to be dropped after moving it into the
// function.
{
let g = #[coroutine] move || match drop($name::unsend::Client::default()) {
_status => yield,
};
assert_send(g);
}
)* }
}
fn assert_send<T: Send>(_thing: T) {}
fn main() {
type_combinations!(
copy => { #[derive(Copy, Clone, Default)] pub struct Client; };
derived_drop => { #[derive(Default)] pub struct Client { pub nickname: String } };
significant_drop => {
#[derive(Default)]
pub struct Client;
impl Drop for Client {
fn drop(&mut self) {}
}
}
);
}
|
