## Keyboard shortcuts

Press `←` or `→` to navigate between chapters

Press `S` or `/` to search in the book

Press `?` to show this help

Press `Esc` to hide this help

# Error code E0771

#### Note: this error code is no longer emitted by the compiler

A non-`'static` lifetime was used in a const generic. This is currently not allowed.

Erroneous code example:

    #![allow(unused)]
    #![feature(adt_const_params, unsized_const_params)]

    fn main() {
    fn function_with_str<'a, const STRING: &'a str>() {} // error!
    }

To fix this issue, the lifetime in the const generic need to be changed to `'static`:

    #![allow(unused)]
    #![feature(adt_const_params, unsized_const_params)]

    fn main() {
    fn function_with_str<const STRING: &'static str>() {} // ok!
    }

For more information, see GitHub issue #74052.