Fix suggestion from move async to async move.
This commit is contained in:
parent
9dd5c19199
commit
ef3e66d69f
3 changed files with 41 additions and 1 deletions
|
@ -1190,7 +1190,16 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
|
|||
);
|
||||
|
||||
let suggestion = match tcx.sess.source_map().span_to_snippet(args_span) {
|
||||
Ok(string) => format!("move {}", string),
|
||||
Ok(mut string) => {
|
||||
if string.starts_with("async ") {
|
||||
string.insert_str(6, "move ");
|
||||
} else if string.starts_with("async|") {
|
||||
string.insert_str(5, " move");
|
||||
} else {
|
||||
string.insert_str(0, "move ");
|
||||
};
|
||||
string
|
||||
},
|
||||
Err(_) => "move |<args>| <body>".to_string()
|
||||
};
|
||||
|
||||
|
|
|
@ -0,0 +1,10 @@
|
|||
// edition:2018
|
||||
#![feature(async_closure,async_await)]
|
||||
fn foo() -> Box<dyn std::future::Future<Output = u32>> {
|
||||
let x = 0u32;
|
||||
Box::new((async || x)())
|
||||
//~^ ERROR E0373
|
||||
}
|
||||
|
||||
fn main() {
|
||||
}
|
|
@ -0,0 +1,21 @@
|
|||
error[E0373]: closure may outlive the current function, but it borrows `x`, which is owned by the current function
|
||||
--> $DIR/async-borrowck-escaping-closure-error.rs:5:15
|
||||
|
|
||||
LL | Box::new((async || x)())
|
||||
| ^^^^^^^^ - `x` is borrowed here
|
||||
| |
|
||||
| may outlive borrowed value `x`
|
||||
|
|
||||
note: closure is returned here
|
||||
--> $DIR/async-borrowck-escaping-closure-error.rs:5:5
|
||||
|
|
||||
LL | Box::new((async || x)())
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
help: to force the closure to take ownership of `x` (and any other referenced variables), use the `move` keyword
|
||||
|
|
||||
LL | Box::new((async move || x)())
|
||||
| ^^^^^^^^^^^^^
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
For more information about this error, try `rustc --explain E0373`.
|
Loading…
Add table
Add a link
Reference in a new issue