Example
#![feature(start, libc, lang_items)]
#![no_std]
#![no_main]
// The libc crate allows importing functions from C.
extern crate libc;
// A list of C functions that are being imported
extern {
pub fn printf(format: *const u8, ...) -> i32;
}
#[no_mangle]
// The main function, with its input arguments ignored, and an exit status is returned
pub extern fn main(_nargs: i32, _args: *const *const u8) -> i32 {
// Print "Hello, World" to stdout using printf
unsafe {
printf(b"Hello, World!\n" as *const u8);
}
// Exit with a return status of 0.
0
}
#[lang = "eh_personality"] extern fn eh_personality() {}
#[lang = "panic_fmt"] extern fn panic_fmt() -> ! { panic!() }
