5cccf3cd25
This commit is an implementation of [RFC 1184][rfc] which tweaks the behavior of the `#![no_std]` attribute and adds a new `#![no_core]` attribute. The `#![no_std]` attribute now injects `extern crate core` at the top of the crate as well as the libcore prelude into all modules (in the same manner as the standard library's prelude). The `#![no_core]` attribute disables both std and core injection. [rfc]: https://github.com/rust-lang/rfcs/pull/1184
30 lines
761 B
Rust
30 lines
761 B
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
#![feature(lang_items, no_core)]
|
|
#![no_core]
|
|
|
|
#[lang="copy"]
|
|
trait Copy { }
|
|
|
|
#[lang="sized"]
|
|
trait Sized { }
|
|
|
|
#[lang="start"]
|
|
fn start(_main: *const u8, _argc: isize, _argv: *const *const u8) -> isize { 0 }
|
|
|
|
extern {
|
|
fn _foo() -> [u8; 16];
|
|
}
|
|
|
|
fn _main() {
|
|
let _a = unsafe { _foo() };
|
|
}
|