rust/tests/ui/no-core-1.rs

// run-pass

#![allow(stable_features)]
#![feature(no_core, core)]
#![no_core]

extern crate std;
extern crate core;

use std::option::Option::Some;

fn main() {
    let a = Some("foo");
    a.unwrap();
}
tests: Add missing run-pass annotations 2019-07-26 21:54:25 +00:00			`// run-pass`

Allow various lints as part of ui-ifying `src/test/run-pass` suite. 2018-09-14 10:20:28 +00:00			`#![allow(stable_features)]`
syntax: Implement #![no_core] 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 2015-07-30 00:01:14 +00:00			`#![feature(no_core, core)]`
			`#![no_core]`

			`extern crate std;`
			`extern crate core;`

			`use std::option::Option::Some;`

			`fn main() {`
			`let a = Some("foo");`
			`a.unwrap();`
			`}`