mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 17:24:06 +00:00
26 lines
1.1 KiB
Plaintext
26 lines
1.1 KiB
Plaintext
error[E0597]: `*a` does not live long enough
|
|
--> $DIR/destructor-restrictions.rs:8:10
|
|
|
|
|
LL | let a = Box::new(RefCell::new(4));
|
|
| - binding `a` declared here
|
|
LL | *a.borrow() + 1
|
|
| ^---------
|
|
| |
|
|
| borrowed value does not live long enough
|
|
| a temporary with access to the borrow is created here ...
|
|
LL | };
|
|
| -- ... and the borrow might be used here, when that temporary is dropped and runs the destructor for type `Ref<'_, i32>`
|
|
| |
|
|
| `*a` dropped here while still borrowed
|
|
|
|
|
= note: the temporary is part of an expression at the end of a block;
|
|
consider forcing this temporary to be dropped sooner, before the block's local variables are dropped
|
|
help: for example, you could save the expression's value in a new local variable `x` and then make `x` be the expression at the end of the block
|
|
|
|
|
LL | let x = *a.borrow() + 1; x
|
|
| +++++++ +++
|
|
|
|
error: aborting due to previous error
|
|
|
|
For more information about this error, try `rustc --explain E0597`.
|