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error: lifetime may not live long enough
--> $DIR/regions-close-object-into-object-2.rs:9:5
|
LL | fn g<'a, T: 'static>(v: Box<dyn A<T> + 'a>) -> Box<dyn X + 'static> {
| -- lifetime `'a` defined here
LL | Box::new(B(&*v)) as Box<dyn X>
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ returning this value requires that `'a` must outlive `'static`
|
help: consider changing the trait object's explicit `'static` bound to the lifetime of argument `v`
|
LL | fn g<'a, T: 'static>(v: Box<dyn A<T> + 'a>) -> Box<dyn X + 'a> {
| ~~
help: alternatively, add an explicit `'static` bound to this reference
|
LL | fn g<'a, T: 'static>(v: Box<(dyn A<T> + 'static)>) -> Box<dyn X + 'static> {
| ~~~~~~~~~~~~~~~~~~~~~~~~~
error[E0515]: cannot return value referencing local data `*v`
--> $DIR/regions-close-object-into-object-2.rs:9:5
|
LL | Box::new(B(&*v)) as Box<dyn X>
| ^^^^^^^^^^^---^^^^^^^^^^^^^^^^
| | |
| | `*v` is borrowed here
| returns a value referencing data owned by the current function
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0515`.
|
