mirror of https://github.com/rust-lang/rust
112 lines
4.4 KiB
Plaintext
112 lines
4.4 KiB
Plaintext
error: lifetime may not live long enough
|
|
--> $DIR/type-check-pointer-coercions.rs:2:5
|
|
|
|
|
LL | fn shared_to_const<'a, 'b>(x: &&'a i32) -> *const &'b i32 {
|
|
| -- -- lifetime `'b` defined here
|
|
| |
|
|
| lifetime `'a` defined here
|
|
LL | x
|
|
| ^ 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`
|
|
|
|
error: lifetime may not live long enough
|
|
--> $DIR/type-check-pointer-coercions.rs:6:5
|
|
|
|
|
LL | fn unique_to_const<'a, 'b>(x: &mut &'a i32) -> *const &'b i32 {
|
|
| -- -- lifetime `'b` defined here
|
|
| |
|
|
| lifetime `'a` defined here
|
|
LL | x
|
|
| ^ 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`
|
|
|
|
error: lifetime may not live long enough
|
|
--> $DIR/type-check-pointer-coercions.rs:11:5
|
|
|
|
|
LL | fn unique_to_mut<'a, 'b>(x: &mut &'a i32) -> *mut &'b i32 {
|
|
| -- -- lifetime `'b` defined here
|
|
| |
|
|
| lifetime `'a` defined here
|
|
LL | // Two errors because *mut is invariant
|
|
LL | x
|
|
| ^ 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 `&i32`
|
|
= 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/type-check-pointer-coercions.rs:11:5
|
|
|
|
|
LL | fn unique_to_mut<'a, 'b>(x: &mut &'a i32) -> *mut &'b i32 {
|
|
| -- -- lifetime `'b` defined here
|
|
| |
|
|
| lifetime `'a` defined here
|
|
LL | // Two errors because *mut is invariant
|
|
LL | x
|
|
| ^ 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 `&i32`
|
|
= 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/type-check-pointer-coercions.rs:16:5
|
|
|
|
|
LL | fn mut_to_const<'a, 'b>(x: *mut &'a i32) -> *const &'b i32 {
|
|
| -- -- lifetime `'b` defined here
|
|
| |
|
|
| lifetime `'a` defined here
|
|
LL | x
|
|
| ^ 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`
|
|
|
|
error: lifetime may not live long enough
|
|
--> $DIR/type-check-pointer-coercions.rs:22:5
|
|
|
|
|
LL | fn array_elem<'a, 'b>(x: &'a i32) -> *const &'b i32 {
|
|
| -- -- lifetime `'b` defined here
|
|
| |
|
|
| lifetime `'a` defined here
|
|
...
|
|
LL | y
|
|
| ^ 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`
|
|
|
|
error: lifetime may not live long enough
|
|
--> $DIR/type-check-pointer-coercions.rs:28:5
|
|
|
|
|
LL | fn array_coerce<'a, 'b>(x: &'a i32) -> *const [&'b i32; 3] {
|
|
| -- -- lifetime `'b` defined here
|
|
| |
|
|
| lifetime `'a` defined here
|
|
...
|
|
LL | y
|
|
| ^ 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`
|
|
|
|
error: lifetime may not live long enough
|
|
--> $DIR/type-check-pointer-coercions.rs:34:5
|
|
|
|
|
LL | fn nested_array<'a, 'b>(x: &'a i32) -> *const [&'b i32; 2] {
|
|
| -- -- lifetime `'b` defined here
|
|
| |
|
|
| lifetime `'a` defined here
|
|
...
|
|
LL | y
|
|
| ^ 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`
|
|
|
|
error: aborting due to 8 previous errors
|
|
|