rustc_lint::builtin

# Static ELIDED_NAMED_LIFETIMES

source

    pub static ELIDED_NAMED_LIFETIMES: &'static Lint

Expand description

The `elided_named_lifetimes` lint detects when an elided lifetime ends up being a named lifetime, such as `'static` or some lifetime parameter `'a`.

#### §Example

ⓘ

    #![deny(elided_named_lifetimes)]
    struct Foo;
    impl Foo {
        pub fn get_mut(&'static self, x: &mut u8) -> &mut u8 {
            unsafe { &mut *(x as *mut _) }
        }
    }

{{produces}}

#### §Explanation

Lifetime elision is quite useful, because it frees you from having to give each lifetime its own name, but sometimes it can produce somewhat surprising resolutions. In safe code, it is mostly okay, because the borrow checker prevents any unsoundness, so the worst case scenario is you get a confusing error message in some other place. But with `unsafe` code, such unexpected resolutions may lead to unsound code.