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error[E0597]: `c` does not live long enough
--> $DIR/shorter-tail-expr-lifetime.rs:7:5
|
LL | let c = std::cell::RefCell::new("..");
| - binding `c` declared here
LL | c.borrow().len()
| ^---------
| |
| borrowed value does not live long enough
| a temporary with access to the borrow is created here ...
LL | }
| -
| |
| `c` dropped here while still borrowed
| ... and the borrow might be used here, when that temporary is dropped and runs the destructor for type `Ref<'_, &str>`
|
= 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 = c.borrow().len(); x
| +++++++ +++
error: aborting due to 1 previous error
For more information about this error, try `rustc --explain E0597`.
|
