// run-rustfix
#![feature(rustc_private)]
#![deny(clippy::internal)]
#![allow(clippy::unnecessary_operation, unused_must_use)]

extern crate rustc_span;

use rustc_span::symbol::{Ident, Symbol};

fn main() {
    Symbol::intern("foo") == rustc_span::sym::clippy;
    Symbol::intern("foo") == rustc_span::symbol::kw::SelfLower;
    Symbol::intern("foo") != rustc_span::symbol::kw::SelfUpper;
    Ident::invalid().name == rustc_span::sym::clippy;
    rustc_span::sym::clippy == Ident::invalid().name;
}