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librustc: Feature gate lang items and intrinsics.

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If you define lang items in your crate, add `#[feature(lang_items)]`.

If you define intrinsics (`extern "rust-intrinsic"`), add
`#[feature(intrinsics)]`.

Closes #12858.

[breaking-change]
This commit is contained in:
Patrick Walton 2014-06-20 16:39:23 -07:00
parent 7689213713
commit 5466d13d43
24 changed files with 106 additions and 17 deletions
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5
src/libstd/lib.rs
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@ -104,13 +104,14 @@
html_root_url = "http://doc.rust-lang.org/",
html_playground_url = "http://play.rust-lang.org/")]
#![feature(macro_rules, globs, managed_boxes)]
#![feature(linkage, default_type_params, phase, unsafe_destructor)]
#![feature(macro_rules, globs, managed_boxes, linkage)]
#![feature(default_type_params, phase, lang_items, unsafe_destructor)]
// Don't link to std. We are std.
#![no_std]
#![allow(deprecated)]
#![allow(unknown_features)] // NOTE: remove after stage0 snapshot
#![deny(missing_doc)]
// When testing libstd, bring in libuv as the I/O backend so tests can print