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error[E0512]: cannot transmute between types of different sizes, or dependently-sized types
--> tests/ui-msrv/transmute-mut-size-decrease.rs:17:32
|
17 | const DECREASE_SIZE: &mut u8 = transmute_mut!(&mut [0u8; 2]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: source type: `[u8; 2]` (16 bits)
= note: target type: `u8` (8 bits)
= note: this error originates in the macro `$crate::assert_size_eq` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0658]: mutable references are not allowed in constants
--> tests/ui-msrv/transmute-mut-size-decrease.rs:17:47
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17 | const DECREASE_SIZE: &mut u8 = transmute_mut!(&mut [0u8; 2]);
| ^^^^^^^^^^^^^
|
= note: see issue #57349 <https://github.com/rust-lang/rust/issues/57349> for more information
error[E0015]: cannot call non-const fn `transmute_mut::<[u8; 2], u8>` in constants
--> tests/ui-msrv/transmute-mut-size-decrease.rs:17:32
|
17 | const DECREASE_SIZE: &mut u8 = transmute_mut!(&mut [0u8; 2]);
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
= note: calls in constants are limited to constant functions, tuple structs and tuple variants
= note: this error originates in the macro `transmute_mut` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0716]: temporary value dropped while borrowed
--> tests/ui-msrv/transmute-mut-size-decrease.rs:17:52
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17 | const DECREASE_SIZE: &mut u8 = transmute_mut!(&mut [0u8; 2]);
| --------------------^^^^^^^^-
| | |
| | creates a temporary which is freed while still in use
| temporary value is freed at the end of this statement
| using this value as a constant requires that borrow lasts for `'static`
|
