#![feature(start, core_intrinsics)] #![no_std] extern crate alloc; extern crate alloc_system; use alloc::boxed::Box; use alloc_system::System; #[global_allocator] static ALLOC: System = System; #[cfg_attr(unix, link(name = "c"))] #[cfg_attr(target_env = "msvc", link(name = "msvcrt"))] extern "C" { fn puts(s: *const u8) -> i32; } #[panic_handler] fn panic_handler(_: &core::panic::PanicInfo) -> ! { core::intrinsics::abort(); } #[start] fn main(_argc: isize, _argv: *const *const u8) -> isize { let world: Box<&str> = Box::new("Hello World!\0"); unsafe { puts(*world as *const str as *const u8); } 0 }