rust/tests/ui/cast/ptr-to-trait-obj-different-regions-misc.stderr

error: lifetime may not live long enough
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:6:5
   |
LL | fn change_lt<'a, 'b>(x: *mut dyn Trait<'a>) -> *mut dyn Trait<'b> {
   |              --  -- lifetime `'b` defined here
   |              |
   |              lifetime `'a` defined here
LL |     x as _
   |     ^^^^^^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
   |
   = help: consider adding the following bound: `'b: 'a`
   = note: requirement occurs because of a mutable pointer to `dyn Trait<'_>`
   = note: mutable pointers are invariant over their type parameter
   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance

error: lifetime may not live long enough
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:6:5
   |
LL | fn change_lt<'a, 'b>(x: *mut dyn Trait<'a>) -> *mut dyn Trait<'b> {
   |              --  -- lifetime `'b` defined here
   |              |
   |              lifetime `'a` defined here
LL |     x as _
   |     ^^^^^^ function was supposed to return data with lifetime `'b` but it is returning data with lifetime `'a`
   |
   = help: consider adding the following bound: `'a: 'b`
   = note: requirement occurs because of a mutable pointer to `dyn Trait<'_>`
   = note: mutable pointers are invariant over their type parameter
   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance

help: `'b` and `'a` must be the same: replace one with the other

error: lifetime may not live long enough
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:11:5
   |
LL | fn change_lt_ab<'a: 'b, 'b>(x: *mut dyn Trait<'a>) -> *mut dyn Trait<'b> {
   |                 --      -- lifetime `'b` defined here
   |                 |
   |                 lifetime `'a` defined here
LL |     x as _
   |     ^^^^^^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
   |
   = help: consider adding the following bound: `'b: 'a`
   = note: requirement occurs because of a mutable pointer to `dyn Trait<'_>`
   = note: mutable pointers are invariant over their type parameter
   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance

error: lifetime may not live long enough
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:15:5
   |
LL | fn change_lt_ba<'a, 'b: 'a>(x: *mut dyn Trait<'a>) -> *mut dyn Trait<'b> {
   |                 --  -- lifetime `'b` defined here
   |                 |
   |                 lifetime `'a` defined here
LL |     x as _
   |     ^^^^^^ function was supposed to return data with lifetime `'b` but it is returning data with lifetime `'a`
   |
   = help: consider adding the following bound: `'a: 'b`
   = note: requirement occurs because of a mutable pointer to `dyn Trait<'_>`
   = note: mutable pointers are invariant over their type parameter
   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance

error: lifetime may not live long enough
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:19:5
   |
LL | fn change_lt_hr<'a>(x: *mut dyn Trait<'a>) -> *mut dyn for<'b> Trait<'b> {
   |                 -- lifetime `'a` defined here
LL |     x as _
   |     ^^^^^^ cast requires that `'a` must outlive `'static`
   |
help: to declare that the trait object captures data from argument `x`, you can add an explicit `'a` lifetime bound
   |
LL | fn change_lt_hr<'a>(x: *mut dyn Trait<'a>) -> *mut dyn for<'b> Trait<'b> + 'a {
   |                                                                          ++++

error[E0308]: mismatched types
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:19:5
   |
LL |     x as _
   |     ^^^^^^ one type is more general than the other
   |
   = note: expected trait object `dyn for<'b> Trait<'b>`
              found trait object `dyn Trait<'_>`

error: lifetime may not live long enough
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:31:5
   |
LL | fn change_assoc_0<'a, 'b>(
   |                   --  -- lifetime `'b` defined here
   |                   |
   |                   lifetime `'a` defined here
...
LL |     x as _
   |     ^^^^^^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
   |
   = help: consider adding the following bound: `'b: 'a`
   = note: requirement occurs because of a mutable pointer to `dyn Assocked<Assoc = dyn Send>`
   = note: mutable pointers are invariant over their type parameter
   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance

error: lifetime may not live long enough
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:31:5
   |
LL | fn change_assoc_0<'a, 'b>(
   |                   --  -- lifetime `'b` defined here
   |                   |
   |                   lifetime `'a` defined here
...
LL |     x as _
   |     ^^^^^^ function was supposed to return data with lifetime `'b` but it is returning data with lifetime `'a`
   |
   = help: consider adding the following bound: `'a: 'b`
   = note: requirement occurs because of a mutable pointer to `dyn Assocked<Assoc = dyn Send>`
   = note: mutable pointers are invariant over their type parameter
   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance

help: `'b` and `'a` must be the same: replace one with the other
   |
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error: lifetime may not live long enough
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:38:5
   |
LL | fn change_assoc_1<'a, 'b>(
   |                   --  -- lifetime `'b` defined here
   |                   |
   |                   lifetime `'a` defined here
...
LL |     x as _
   |     ^^^^^^ function was supposed to return data with lifetime `'a` but it is returning data with lifetime `'b`
   |
   = help: consider adding the following bound: `'b: 'a`
   = note: requirement occurs because of a mutable pointer to `dyn Assocked<Assoc = dyn Trait<'_>>`
   = note: mutable pointers are invariant over their type parameter
   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance

error: lifetime may not live long enough
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:38:5
   |
LL | fn change_assoc_1<'a, 'b>(
   |                   --  -- lifetime `'b` defined here
   |                   |
   |                   lifetime `'a` defined here
...
LL |     x as _
   |     ^^^^^^ function was supposed to return data with lifetime `'b` but it is returning data with lifetime `'a`
   |
   = help: consider adding the following bound: `'a: 'b`
   = note: requirement occurs because of a mutable pointer to `dyn Assocked<Assoc = dyn Trait<'_>>`
   = note: mutable pointers are invariant over their type parameter
   = help: see <https://doc.rust-lang.org/nomicon/subtyping.html> for more information about variance

help: `'b` and `'a` must be the same: replace one with the other
   |
   = note: duplicate diagnostic emitted due to `-Z deduplicate-diagnostics=no`

error: lifetime may not live long enough
  --> $DIR/ptr-to-trait-obj-different-regions-misc.rs:45:20
   |
LL | fn extend_to_static<'a>(ptr: *const dyn Trait<'a>) {
   |                     -- lifetime `'a` defined here
LL |     require_static(ptr as _)
   |                    ^^^^^^^^ cast requires that `'a` must outlive `'static`

error: aborting due to 11 previous errors

For more information about this error, try `rustc --explain E0308`.