rust/tests/ui/async-await/suggest-missing-await.rs

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// edition:2018
fn take_u32(_x: u32) {}
async fn make_u32() -> u32 {
22
}
#[allow(unused)]
async fn suggest_await_in_async_fn() {
let x = make_u32();
take_u32(x)
//~^ ERROR mismatched types [E0308]
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//~| HELP consider `await`ing on the `Future`
//~| SUGGESTION .await
}
async fn dummy() {}
#[allow(unused)]
async fn suggest_await_in_async_fn_return() {
dummy()
//~^ ERROR mismatched types [E0308]
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//~| HELP consider `await`ing on the `Future`
//~| HELP consider using a semicolon here
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//~| SUGGESTION .await
}
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#[allow(unused)]
async fn suggest_await_on_if() {
let _x = if true {
dummy()
//~^ HELP consider `await`ing on the `Future`
} else {
dummy().await
//~^ ERROR `if` and `else` have incompatible types [E0308]
};
}
#[allow(unused)]
async fn suggest_await_on_previous_match_arms() {
let _x = match 0usize {
0 => dummy(), //~ HELP consider `await`ing on the `Future`
1 => dummy(),
2 => dummy().await,
//~^ `match` arms have incompatible types [E0308]
};
}
#[allow(unused)]
async fn suggest_await_on_match_expr() {
let _x = match dummy() { //~ HELP consider `await`ing on the `Future`
() => {} //~ ERROR mismatched types [E0308]
};
}
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async fn dummy_result() -> Result<(), ()> {
Ok(())
}
#[allow(unused)]
async fn suggest_await_in_generic_pattern() {
match dummy_result() {
//~^ HELP consider `await`ing on the `Future`
//~| HELP consider `await`ing on the `Future`
//~| SUGGESTION .await
Ok(_) => {}
//~^ ERROR mismatched types [E0308]
Err(_) => {}
//~^ ERROR mismatched types [E0308]
}
}
fn main() {}