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
35 lines
1 KiB
Rust
35 lines
1 KiB
Rust
// Copyright 2015 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, start, no_std, collections)]
|
|
#![no_std]
|
|
|
|
extern crate std as other;
|
|
|
|
#[macro_use] extern crate collections;
|
|
|
|
use collections::string::ToString;
|
|
|
|
#[start]
|
|
fn start(_argc: isize, _argv: *const *const u8) -> isize {
|
|
let s = format!("{}", 1_isize);
|
|
assert_eq!(s, "1".to_string());
|
|
|
|
let s = format!("test");
|
|
assert_eq!(s, "test".to_string());
|
|
|
|
let s = format!("{test}", test=3_isize);
|
|
assert_eq!(s, "3".to_string());
|
|
|
|
let s = format!("hello {}", "world");
|
|
assert_eq!(s, "hello world".to_string());
|
|
|
|
0
|
|
}
|