mirror of https://github.com/rust-lang/rust
63 lines
2.3 KiB
Plaintext
63 lines
2.3 KiB
Plaintext
error: lifetime may not live long enough
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--> $DIR/region-object-lifetime-in-coercion.rs:8:12
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LL | fn a(v: &[u8]) -> Box<dyn Foo + 'static> {
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| - let's call the lifetime of this reference `'1`
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LL | let x: Box<dyn Foo + 'static> = Box::new(v);
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| ^^^^^^^^^^^^^^^^^^^^^^ type annotation requires that `'1` must outlive `'static`
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help: consider changing the trait object's explicit `'static` bound to the lifetime of argument `v`
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LL | fn a(v: &[u8]) -> Box<dyn Foo + '_> {
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| ~~
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help: alternatively, add an explicit `'static` bound to this reference
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LL | fn a(v: &'static [u8]) -> Box<dyn Foo + 'static> {
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| ~~~~~~~~~~~~~
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error: lifetime may not live long enough
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--> $DIR/region-object-lifetime-in-coercion.rs:14:5
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LL | fn b(v: &[u8]) -> Box<dyn Foo + 'static> {
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| - let's call the lifetime of this reference `'1`
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LL | Box::new(v)
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| ^^^^^^^^^^^ returning this value requires that `'1` must outlive `'static`
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help: consider changing the trait object's explicit `'static` bound to the lifetime of argument `v`
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LL | fn b(v: &[u8]) -> Box<dyn Foo + '_> {
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| ~~
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help: alternatively, add an explicit `'static` bound to this reference
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LL | fn b(v: &'static [u8]) -> Box<dyn Foo + 'static> {
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| ~~~~~~~~~~~~~
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error: lifetime may not live long enough
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--> $DIR/region-object-lifetime-in-coercion.rs:21:5
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LL | fn c(v: &[u8]) -> Box<dyn Foo> {
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| - let's call the lifetime of this reference `'1`
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...
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LL | Box::new(v)
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| ^^^^^^^^^^^ returning this value requires that `'1` must outlive `'static`
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help: to declare that the trait object captures data from argument `v`, you can add an explicit `'_` lifetime bound
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LL | fn c(v: &[u8]) -> Box<dyn Foo + '_> {
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| ++++
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error: lifetime may not live long enough
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--> $DIR/region-object-lifetime-in-coercion.rs:26:5
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LL | fn d<'a,'b>(v: &'a [u8]) -> Box<dyn Foo+'b> {
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| -- -- lifetime `'b` defined here
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| |
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| lifetime `'a` defined here
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LL | Box::new(v)
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| ^^^^^^^^^^^ function was supposed to return data with lifetime `'b` but it is returning data with lifetime `'a`
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= help: consider adding the following bound: `'a: 'b`
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error: aborting due to 4 previous errors
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