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