mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-27 01:04:03 +00:00
75 lines
2.9 KiB
Plaintext
75 lines
2.9 KiB
Plaintext
error[E0310]: the parameter type `U` may not live long enough
|
|
--> $DIR/regions-close-object-into-object-4.rs:9:5
|
|
|
|
|
LL | Box::new(B(&*v)) as Box<dyn X>
|
|
| ^^^^^^^^ ...so that the type `U` will meet its required lifetime bounds
|
|
|
|
|
help: consider adding an explicit lifetime bound...
|
|
|
|
|
LL | fn i<'a, T, U: 'static>(v: Box<dyn A<U>+'a>) -> Box<dyn X + 'static> {
|
|
| +++++++++
|
|
|
|
error[E0310]: the parameter type `U` may not live long enough
|
|
--> $DIR/regions-close-object-into-object-4.rs:9:5
|
|
|
|
|
LL | Box::new(B(&*v)) as Box<dyn X>
|
|
| ^^^^^^^^^^^^^^^^ ...so that the type `U` will meet its required lifetime bounds
|
|
|
|
|
help: consider adding an explicit lifetime bound...
|
|
|
|
|
LL | fn i<'a, T, U: 'static>(v: Box<dyn A<U>+'a>) -> Box<dyn X + 'static> {
|
|
| +++++++++
|
|
|
|
error[E0310]: the parameter type `U` may not live long enough
|
|
--> $DIR/regions-close-object-into-object-4.rs:9:5
|
|
|
|
|
LL | Box::new(B(&*v)) as Box<dyn X>
|
|
| ^^^^^^^^^^^^^^^^ ...so that the type `U` will meet its required lifetime bounds
|
|
|
|
|
help: consider adding an explicit lifetime bound...
|
|
|
|
|
LL | fn i<'a, T, U: 'static>(v: Box<dyn A<U>+'a>) -> Box<dyn X + 'static> {
|
|
| +++++++++
|
|
|
|
error: lifetime may not live long enough
|
|
--> $DIR/regions-close-object-into-object-4.rs:9:5
|
|
|
|
|
LL | fn i<'a, T, U>(v: Box<dyn A<U>+'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 i<'a, T, U>(v: Box<dyn A<U>+'a>) -> Box<dyn X + 'a> {
|
|
| ~~
|
|
help: alternatively, add an explicit `'static` bound to this reference
|
|
|
|
|
LL | fn i<'a, T, U>(v: Box<(dyn A<U> + 'static)>) -> Box<dyn X + 'static> {
|
|
| ~~~~~~~~~~~~~~~~~~~~~~~~~
|
|
|
|
error[E0515]: cannot return value referencing local data `*v`
|
|
--> $DIR/regions-close-object-into-object-4.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[E0310]: the parameter type `U` may not live long enough
|
|
--> $DIR/regions-close-object-into-object-4.rs:9:14
|
|
|
|
|
LL | Box::new(B(&*v)) as Box<dyn X>
|
|
| ^^^^^^ ...so that the type `U` will meet its required lifetime bounds
|
|
|
|
|
help: consider adding an explicit lifetime bound...
|
|
|
|
|
LL | fn i<'a, T, U: 'static>(v: Box<dyn A<U>+'a>) -> Box<dyn X + 'static> {
|
|
| +++++++++
|
|
|
|
error: aborting due to 6 previous errors
|
|
|
|
Some errors have detailed explanations: E0310, E0515.
|
|
For more information about an error, try `rustc --explain E0310`.
|