rust/tests/ui/feature-gates/stable-features.rs

// Testing that the stable_features lint catches use of stable
// language and lib features.

#![deny(stable_features)]

#![feature(test_accepted_feature)]
//~^ ERROR the feature `test_accepted_feature` has been stable since 1.0.0

#![feature(rust1)]
//~^ ERROR the feature `rust1` has been stable since 1.0.0

fn main() {
    let _foo: Vec<()> = Vec::new();
}
Add a lint for writing `#[feature]` for stable features, warn by default. The 'stable_features' lint helps people progress from unstable to stable Rust by telling them when they no longer need a `feature` attribute because upstream Rust has declared it stable. This compares to the existing 'unstable_features', which is used to implement feature staging, and triggers on any use of `#[feature]`. 2015-02-03 04:25:42 +00:00			`// Testing that the stable_features lint catches use of stable`
			`// language and lib features.`

			`#![deny(stable_features)]`
rustc: Move stability functionality into queries This commit primarily removes the `stability` field from `TyCtxt` as well as its internal mutable state, instead using a query to build the stability index as well as primarily using queries for other related lookups. Like previous commits the calculation of the stability index is wrapped in a `with_ignore` node to avoid regressing the current tests, and otherwise this commit also introduces #44232 but somewhat intentionally so. 2017-08-31 22:08:34 +00:00
Fix test/compile-fail 2018-07-23 11:22:23 +00:00			`#![feature(test_accepted_feature)]`
			//~^ ERROR the feature `test_accepted_feature` has been stable since 1.0.0
rustc: Move stability functionality into queries This commit primarily removes the `stability` field from `TyCtxt` as well as its internal mutable state, instead using a query to build the stability index as well as primarily using queries for other related lookups. Like previous commits the calculation of the stability index is wrapped in a `with_ignore` node to avoid regressing the current tests, and otherwise this commit also introduces #44232 but somewhat intentionally so. 2017-08-31 22:08:34 +00:00
			`#![feature(rust1)]`
Fix test/compile-fail 2018-07-23 11:22:23 +00:00			//~^ ERROR the feature `rust1` has been stable since 1.0.0
Add a lint for writing `#[feature]` for stable features, warn by default. The 'stable_features' lint helps people progress from unstable to stable Rust by telling them when they no longer need a `feature` attribute because upstream Rust has declared it stable. This compares to the existing 'unstable_features', which is used to implement feature staging, and triggers on any use of `#[feature]`. 2015-02-03 04:25:42 +00:00
			`fn main() {`
			`let _foo: Vec<()> = Vec::new();`
			`}`