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168 lines
7.4 KiB
Plaintext
168 lines
7.4 KiB
Plaintext
error: lifetime may not live long enough
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:6:5
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LL | fn change_lt<'a, 'b>(x: *mut dyn Trait<'a>) -> *mut dyn Trait<'b> {
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| -- -- lifetime `'b` defined here
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| lifetime `'a` defined here
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LL | x as _
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| ^^^^^^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
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= help: consider adding the following bound: `'b: 'a`
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= note: requirement occurs because of a mutable pointer to `dyn Trait<'_>`
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= note: mutable pointers are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:6:5
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LL | fn change_lt<'a, 'b>(x: *mut dyn Trait<'a>) -> *mut dyn Trait<'b> {
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| -- -- lifetime `'b` defined here
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| lifetime `'a` defined here
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LL | x as _
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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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= note: requirement occurs because of a mutable pointer to `dyn Trait<'_>`
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= note: mutable pointers are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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help: `'b` and `'a` must be the same: replace one with the other
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error: lifetime may not live long enough
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:11:5
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LL | fn change_lt_ab<'a: 'b, 'b>(x: *mut dyn Trait<'a>) -> *mut dyn Trait<'b> {
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| -- -- lifetime `'b` defined here
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| lifetime `'a` defined here
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LL | x as _
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| ^^^^^^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
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= help: consider adding the following bound: `'b: 'a`
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= note: requirement occurs because of a mutable pointer to `dyn Trait<'_>`
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= note: mutable pointers are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:15:5
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LL | fn change_lt_ba<'a, 'b: 'a>(x: *mut dyn Trait<'a>) -> *mut dyn Trait<'b> {
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| -- -- lifetime `'b` defined here
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| lifetime `'a` defined here
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LL | x as _
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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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= note: requirement occurs because of a mutable pointer to `dyn Trait<'_>`
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= note: mutable pointers are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:19:5
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LL | fn change_lt_hr<'a>(x: *mut dyn Trait<'a>) -> *mut dyn for<'b> Trait<'b> {
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| -- lifetime `'a` defined here
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LL | x as _
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| ^^^^^^ cast requires that `'a` must outlive `'static`
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help: to declare that the trait object captures data from argument `x`, you can add an explicit `'a` lifetime bound
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LL | fn change_lt_hr<'a>(x: *mut dyn Trait<'a>) -> *mut dyn for<'b> Trait<'b> + 'a {
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| ++++
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error[E0308]: mismatched types
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:19:5
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LL | x as _
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| ^^^^^^ one type is more general than the other
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= note: expected trait object `dyn for<'b> Trait<'b>`
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found trait object `dyn Trait<'_>`
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error: lifetime may not live long enough
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:31:5
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LL | fn change_assoc_0<'a, 'b>(
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| -- -- lifetime `'b` defined here
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| lifetime `'a` defined here
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...
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LL | x as _
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| ^^^^^^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
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= help: consider adding the following bound: `'b: 'a`
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= note: requirement occurs because of a mutable pointer to `dyn Assocked<Assoc = dyn Send>`
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= note: mutable pointers are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:31:5
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LL | fn change_assoc_0<'a, 'b>(
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| -- -- lifetime `'b` defined here
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| lifetime `'a` defined here
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...
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LL | x as _
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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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= note: requirement occurs because of a mutable pointer to `dyn Assocked<Assoc = dyn Send>`
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= note: mutable pointers are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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help: `'b` and `'a` must be the same: replace one with the other
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= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
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error: lifetime may not live long enough
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:38:5
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LL | fn change_assoc_1<'a, 'b>(
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| -- -- lifetime `'b` defined here
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| lifetime `'a` defined here
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...
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LL | x as _
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| ^^^^^^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
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= help: consider adding the following bound: `'b: 'a`
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= note: requirement occurs because of a mutable pointer to `dyn Assocked<Assoc = dyn Trait<'_>>`
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= note: mutable pointers are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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error: lifetime may not live long enough
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:38:5
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LL | fn change_assoc_1<'a, 'b>(
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| -- -- lifetime `'b` defined here
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| lifetime `'a` defined here
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...
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LL | x as _
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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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= note: requirement occurs because of a mutable pointer to `dyn Assocked<Assoc = dyn Trait<'_>>`
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= note: mutable pointers are invariant over their type parameter
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= help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance
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help: `'b` and `'a` must be the same: replace one with the other
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= note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`
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error: lifetime may not live long enough
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--> $DIR/ptr-to-trait-obj-different-regions-misc.rs:45:20
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LL | fn extend_to_static<'a>(ptr: *const dyn Trait<'a>) {
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| -- lifetime `'a` defined here
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LL | require_static(ptr as _)
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| ^^^^^^^^ cast requires that `'a` must outlive `'static`
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error: aborting due to 11 previous errors
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For more information about this error, try `rustc --explain E0308`.
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