diff options
| -rw-r--r-- | src/librustc_feature/lib.rs | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/src/librustc_feature/lib.rs b/src/librustc_feature/lib.rs index e8ed1f377e5..82e60889316 100644 --- a/src/librustc_feature/lib.rs +++ b/src/librustc_feature/lib.rs @@ -1,16 +1,14 @@ -//! # Feature gating +//! # Feature gates //! -//! This module implements the gating necessary for preventing certain compiler -//! features from being used by default. This module will crawl a pre-expanded -//! AST to ensure that there are no features which are used that are not -//! enabled. +//! This crate declares the set of past and present unstable features in the compiler. +//! Feature gate checking itself is done in `libsyntax/feature_gate/check.rs` at the moment. //! //! Features are enabled in programs via the crate-level attributes of //! `#![feature(...)]` with a comma-separated list of features. //! -//! For the purpose of future feature-tracking, once code for detection of feature -//! gate usage is added, *do not remove it again* even once the feature -//! becomes stable. +//! For the purpose of future feature-tracking, once a feature gate is added, +//! even if it is stabilized or removed, *do not remove it*. Instead, move the +//! symbol to the `accepted` or `removed` modules respectively. mod accepted; mod removed; |