[Solved] "Hello World" no_std build problem

help
4

Thanks for the info about panic_fmt. I'm still only able to build on nightly due to:

error: language item required, but not found: `eh_personality`

The following does work on nightly though:

#![feature(lang_items)]
#![no_std]
#![no_main]

extern crate libc;

#[no_mangle]
pub extern "C" fn main(_argc: isize, _argv: *const *const u8) -> isize {
    // Since we are passing a C string the final null character is mandatory
    const HELLO: &'static str = "Hello, world!\n\0";
    unsafe {
        libc::printf(HELLO.as_ptr() as *const _);
    }
    0
}

#[panic_handler]
fn my_panic(_info: &core::panic::PanicInfo) -> ! {
    loop {}
}

#[lang = "eh_personality"]
extern "C" fn eh_personality() {}

Unless someone knows about how to work around this lang item on stable?