rust/tests/ui/crate_level_checks/no_std_main_recursion.rs

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// compile-flags: -Clink-arg=-nostartfiles
// ignore-macos
// ignore-windows
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#![feature(lang_items, start, libc)]
#![no_std]
use core::panic::PanicInfo;
use core::sync::atomic::{AtomicUsize, Ordering};
static N: AtomicUsize = AtomicUsize::new(0);
#[warn(clippy::main_recursion)]
#[start]
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fn main(_argc: isize, _argv: *const *const u8) -> isize {
let x = N.load(Ordering::Relaxed);
N.store(x + 1, Ordering::Relaxed);
if x < 3 {
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main(_argc, _argv);
}
0
}
#[allow(clippy::empty_loop)]
#[panic_handler]
fn panic(_info: &PanicInfo) -> ! {
loop {}
}
#[lang = "eh_personality"]
extern "C" fn eh_personality() {}