rust/tests/ui/empty_loop_no_std.rs

//@compile-flags: -Clink-arg=-nostartfiles
//@ignore-target-apple

#![warn(clippy::empty_loop)]
#![feature(lang_items, start, libc)]
#![no_std]

use core::panic::PanicInfo;

#[start]
fn main(argc: isize, argv: *const *const u8) -> isize {
    // This should trigger the lint
    loop {}
    //~^ ERROR: empty `loop {}` wastes CPU cycles
}

#[panic_handler]
fn panic(_info: &PanicInfo) -> ! {
    // This should NOT trigger the lint
    loop {}
}

#[lang = "eh_personality"]
extern "C" fn eh_personality() {
    // This should also trigger the lint
    loop {}
    //~^ ERROR: empty `loop {}` wastes CPU cycles
}