pub static RUST_2024_INCOMPATIBLE_PAT: &Lint
Expand description
The rust_2024_incompatible_pat
lint
detects patterns whose meaning will change in the Rust 2024 edition.
§Example
ⓘ
#![feature(ref_pat_eat_one_layer_2024)]
#![warn(rust_2024_incompatible_pat)]
if let Some(&a) = &Some(&0u8) {
let _: u8 = a;
}
if let Some(mut _a) = &mut Some(0u8) {
_a = 7u8;
}
{{produces}}
§Explanation
In Rust 2024 and above, the mut
keyword does not reset the pattern binding mode,
and nor do &
or &mut
patterns. The lint will suggest code that
has the same meaning in all editions.