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
931 B
Rust
35 lines
931 B
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#![feature(lang_items, start, no_std, core_slice_ext, libc, collections)]
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#![no_std]
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extern crate std as other;
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extern crate libc;
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#[macro_use]
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extern crate collections;
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use core::option::Option::Some;
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use core::slice::SliceExt;
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use collections::vec::Vec;
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// Issue #16806
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#[start]
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fn start(_argc: isize, _argv: *const *const u8) -> isize {
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let x: Vec<u8> = vec![0, 1, 2];
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match x.last() {
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Some(&2) => (),
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_ => panic!(),
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}
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0
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}
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