mirror of
https://github.com/rust-lang/rust.git
synced 2024-10-30 14:01:51 +00:00
20 lines
668 B
Plaintext
20 lines
668 B
Plaintext
error: captured variable cannot escape `FnMut` closure body
|
|
--> $DIR/issue-40510-1.rs:7:9
|
|
|
|
|
LL | let mut x: Box<()> = Box::new(());
|
|
| ----- variable defined here
|
|
LL |
|
|
LL | || {
|
|
| - inferred to be a `FnMut` closure
|
|
LL | &mut x
|
|
| ^^^^^-
|
|
| | |
|
|
| | variable captured here
|
|
| returns a reference to a captured variable which escapes the closure body
|
|
|
|
|
= note: `FnMut` closures only have access to their captured variables while they are executing...
|
|
= note: ...therefore, they cannot allow references to captured variables to escape
|
|
|
|
error: aborting due to 1 previous error
|
|
|