73 lines
1.4 KiB
Rust
73 lines
1.4 KiB
Rust
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// Compiler:
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//
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// Run-time:
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// status: 0
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// stdout: 10
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// 10
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// 42
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#![feature(auto_traits, lang_items, no_core, start, intrinsics)]
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#![no_std]
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#![no_core]
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#[lang = "copy"]
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pub unsafe trait Copy {}
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unsafe impl Copy for bool {}
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unsafe impl Copy for u8 {}
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unsafe impl Copy for u16 {}
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unsafe impl Copy for u32 {}
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unsafe impl Copy for u64 {}
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unsafe impl Copy for usize {}
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unsafe impl Copy for i8 {}
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unsafe impl Copy for i16 {}
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unsafe impl Copy for i32 {}
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unsafe impl Copy for isize {}
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unsafe impl Copy for f32 {}
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unsafe impl Copy for char {}
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mod libc {
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#[link(name = "c")]
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extern "C" {
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pub fn printf(format: *const i8, ...) -> i32;
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}
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}
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/*
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* Core
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*/
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// Because we don't have core yet.
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#[lang = "sized"]
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pub trait Sized {}
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#[lang = "receiver"]
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trait Receiver {
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}
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#[lang = "freeze"]
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pub(crate) unsafe auto trait Freeze {}
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/*
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* Code
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*/
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fn int_cast(a: u16, b: i16) -> (u8, u16, u32, usize, i8, i16, i32, isize, u8, u32) {
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(
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a as u8, a as u16, a as u32, a as usize, a as i8, a as i16, a as i32, a as isize, b as u8,
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b as u32,
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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 (a, b, c, d, e, f, g, h, i, j) = int_cast(10, 42);
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unsafe {
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libc::printf(b"%d\n\0" as *const u8 as *const i8, c);
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libc::printf(b"%ld\n\0" as *const u8 as *const i8, d);
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libc::printf(b"%ld\n\0" as *const u8 as *const i8, j);
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}
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0
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}
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