mirror of
https://github.com/rust-lang/rust.git
synced 2024-12-02 03:33:59 +00:00
abf92c049d
Use a multipart suggestion instead of a single whole-span replacement: ``` error[E0796]: creating a shared reference to a mutable static --> $DIR/reference-to-mut-static-unsafe-fn.rs:10:18 | LL | let _y = &X; | ^^ shared reference to mutable static | = note: this shared reference has lifetime `'static`, but if the static ever gets mutated, or a mutable reference is created, then any further use of this shared reference is Undefined Behavior help: use `addr_of!` instead to create a raw pointer | LL | let _y = addr_of!(X); | ~~~~~~~~~ + ```
89 lines
3.3 KiB
Plaintext
89 lines
3.3 KiB
Plaintext
warning: creating a mutable reference to mutable static is discouraged
|
|
--> $DIR/issue-20801.rs:14:14
|
|
|
|
|
LL | unsafe { &mut GLOBAL_MUT_T }
|
|
| ^^^^^^^^^^^^^^^^^ mutable reference to mutable static
|
|
|
|
|
= note: for more information, see issue #114447 <https://github.com/rust-lang/rust/issues/114447>
|
|
= note: this will be a hard error in the 2024 edition
|
|
= note: this mutable reference has lifetime `'static`, but if the static gets accessed (read or written) by any other means, or any other reference is created, then any further use of this mutable reference is Undefined Behavior
|
|
= note: `#[warn(static_mut_refs)]` on by default
|
|
help: use `addr_of_mut!` instead to create a raw pointer
|
|
|
|
|
LL | unsafe { addr_of_mut!(GLOBAL_MUT_T) }
|
|
| ~~~~~~~~~~~~~ +
|
|
|
|
error[E0507]: cannot move out of a mutable reference
|
|
--> $DIR/issue-20801.rs:27:22
|
|
|
|
|
LL | let a = unsafe { *mut_ref() };
|
|
| ^^^^^^^^^^ move occurs because value has type `T`, which does not implement the `Copy` trait
|
|
|
|
|
note: if `T` implemented `Clone`, you could clone the value
|
|
--> $DIR/issue-20801.rs:3:1
|
|
|
|
|
LL | struct T(u8);
|
|
| ^^^^^^^^ consider implementing `Clone` for this type
|
|
...
|
|
LL | let a = unsafe { *mut_ref() };
|
|
| ---------- you could clone this value
|
|
help: consider removing the dereference here
|
|
|
|
|
LL - let a = unsafe { *mut_ref() };
|
|
LL + let a = unsafe { mut_ref() };
|
|
|
|
|
|
|
error[E0507]: cannot move out of a shared reference
|
|
--> $DIR/issue-20801.rs:30:22
|
|
|
|
|
LL | let b = unsafe { *imm_ref() };
|
|
| ^^^^^^^^^^ move occurs because value has type `T`, which does not implement the `Copy` trait
|
|
|
|
|
note: if `T` implemented `Clone`, you could clone the value
|
|
--> $DIR/issue-20801.rs:3:1
|
|
|
|
|
LL | struct T(u8);
|
|
| ^^^^^^^^ consider implementing `Clone` for this type
|
|
...
|
|
LL | let b = unsafe { *imm_ref() };
|
|
| ---------- you could clone this value
|
|
help: consider removing the dereference here
|
|
|
|
|
LL - let b = unsafe { *imm_ref() };
|
|
LL + let b = unsafe { imm_ref() };
|
|
|
|
|
|
|
error[E0507]: cannot move out of a raw pointer
|
|
--> $DIR/issue-20801.rs:33:22
|
|
|
|
|
LL | let c = unsafe { *mut_ptr() };
|
|
| ^^^^^^^^^^ move occurs because value has type `T`, which does not implement the `Copy` trait
|
|
|
|
|
note: if `T` implemented `Clone`, you could clone the value
|
|
--> $DIR/issue-20801.rs:3:1
|
|
|
|
|
LL | struct T(u8);
|
|
| ^^^^^^^^ consider implementing `Clone` for this type
|
|
...
|
|
LL | let c = unsafe { *mut_ptr() };
|
|
| ---------- you could clone this value
|
|
|
|
error[E0507]: cannot move out of a raw pointer
|
|
--> $DIR/issue-20801.rs:36:22
|
|
|
|
|
LL | let d = unsafe { *const_ptr() };
|
|
| ^^^^^^^^^^^^ move occurs because value has type `T`, which does not implement the `Copy` trait
|
|
|
|
|
note: if `T` implemented `Clone`, you could clone the value
|
|
--> $DIR/issue-20801.rs:3:1
|
|
|
|
|
LL | struct T(u8);
|
|
| ^^^^^^^^ consider implementing `Clone` for this type
|
|
...
|
|
LL | let d = unsafe { *const_ptr() };
|
|
| ------------ you could clone this value
|
|
|
|
error: aborting due to 4 previous errors; 1 warning emitted
|
|
|
|
For more information about this error, try `rustc --explain E0507`.
|