rust/tests/ui/cfg/cfg-false-feature.rs

// Features above `cfg(false)` are in effect in a fully unconfigured crate (issue #104633).

//@ check-pass
//@ compile-flags: --crate-type lib

#![feature(decl_macro)]
#![cfg(false)]
#![feature(box_patterns)]

macro mac() {} // OK

trait A = Clone; //~ WARN trait aliases are experimental
                 //~| WARN unstable syntax can change at any point in the future

fn main() {
    let box _ = Box::new(0); //~ WARN box pattern syntax is experimental
                             //~| WARN unstable syntax can change at any point in the future
}