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|
error[E0308]: mismatched types
--> tests/ui-nightly/transmute-mut-src-immutable.rs:17:37
|
17 | let _: &mut u8 = transmute_mut!(&0u8);
| ---------------^^^^-
| | |
| | types differ in mutability
| expected due to this
|
= note: expected mutable reference `&mut _`
found reference `&u8`
warning: this function depends on never type fallback being `()`
--> tests/ui-nightly/transmute-mut-src-immutable.rs:15:1
|
15 | fn ref_src_immutable() {
| ^^^^^^^^^^^^^^^^^^^^^^
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
= help: specify the types explicitly
note: in edition 2024, the requirement `!: FromBytes` will fail
--> tests/ui-nightly/transmute-mut-src-immutable.rs:17:22
|
17 | let _: &mut u8 = transmute_mut!(&0u8);
| ^^^^^^^^^^^^^^^^^^^^
= note: `#[warn(dependency_on_unit_never_type_fallback)]` on by default
= note: this warning originates in the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info)
warning: never type fallback affects this call to an `unsafe` function
--> tests/ui-nightly/transmute-mut-src-immutable.rs:17:22
|
17 | let _: &mut u8 = transmute_mut!(&0u8);
| ^^^^^^^^^^^^^^^^^^^^
|
= warning: this will change its meaning in a future release!
= note: for more information, see issue #123748 <https://github.com/rust-lang/rust/issues/123748>
= help: specify the type explicitly
= note: `#[warn(never_type_fallback_flowing_into_unsafe)]` on by default
= note: this warning originates in the macro `$crate::assert_size_eq` which comes from the expansion of the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info)
|
