Module feature_gate 

Re-exports

use rustc_ast::visit; 🔒

use rustc_ast::visit::AssocCtxt; 🔒

use rustc_ast::visit::FnKind; 🔒

use rustc_ast::visit::Visitor; 🔒

use rustc_ast as ast; 🔒

use rustc_ast::AttrVec; 🔒

use rustc_ast::GenericBound; 🔒

use rustc_ast::NodeId; 🔒

use rustc_ast::PatKind; 🔒

use rustc_ast::attr; 🔒

use rustc_ast::token; 🔒

use rustc_attr_ir::Attribute; 🔒

use rustc_attr_ir::AttributeKind; 🔒

use rustc_attr_parsing::AttributeParser; 🔒

use rustc_errors::msg; 🔒

use rustc_feature::DependentFeature; 🔒

use rustc_feature::Features; 🔒

use rustc_session::Session; 🔒

use rustc_session::config::NextSolverConfig; 🔒

use rustc_session::diagnostics::feature_err; 🔒

use rustc_session::diagnostics::feature_warn; 🔒

use rustc_span::Span; 🔒

use rustc_span::Spanned; 🔒

use rustc_span::sym; 🔒

use crate::diagnostics; 🔒

Macros

gate 🔒

The common case.

gate_alt 🔒

The unusual case, where the has_feature condition is non-standard.

gate_multi 🔒

The case involving a multispan.

Structs

PostExpansionVisitor 🔒

Functions

check_crate

check_dependent_features 🔒

check_features_requiring_new_solver 🔒

check_incompatible_features 🔒

maybe_stage_features 🔒

warn_next_solver_and_gce 🔒

warn_next_solver_and_higher_ranked_assumptions 🔒