cfg_boolean_literals

The tracking issue for this feature is: #131204

The cfg_boolean_literals feature makes it possible to use the true/false literal as cfg predicate. They always evaluate to true/false respectively.

Examples

#![allow(unused)]
#![feature(cfg_boolean_literals)]

fn main() {
#[cfg(true)]
const A: i32 = 5;

#[cfg(all(false))]
const A: i32 = 58 * 89;
}