Feed the features_query instead of grabbing it from the session lazily

Author: oli-obk

compiler/rustc_interface/src/passes.rs

@@ -834,6 +834,7 @@ pub fn create_global_ctxt<'tcx>(
         );
         feed.resolutions(tcx.arena.alloc(untracked_resolutions));
         feed.output_filenames(tcx.arena.alloc(std::sync::Arc::new(outputs)));
+        feed.features_query(sess.features_untracked());
         let feed = tcx.feed_local_crate();
         feed.crate_name(crate_name);
     });

compiler/rustc_lint/src/expect.rs

@@ -12,7 +12,7 @@ pub(crate) fn provide(providers: &mut Providers) {
 }
 
 fn check_expectations(tcx: TyCtxt<'_>, tool_filter: Option<Symbol>) {
-    if !tcx.sess.features_untracked().enabled(sym::lint_reasons) {
+    if !tcx.features().enabled(sym::lint_reasons) {
         return;
     }
 

compiler/rustc_middle/src/query/mod.rs

@@ -2041,7 +2041,7 @@ rustc_queries! {
     }
 
     query features_query(_: ()) -> &'tcx rustc_feature::Features {
-        eval_always
+        feedable
         desc { "looking up enabled feature gates" }
     }
 

compiler/rustc_middle/src/ty/context.rs

@@ -2402,7 +2402,6 @@ pub fn provide(providers: &mut ty::query::Providers) {
 
     providers.extern_mod_stmt_cnum =
         |tcx, id| tcx.resolutions(()).extern_crate_map.get(&id).cloned();
-    providers.features_query = |tcx, ()| tcx.sess.features_untracked();
     providers.is_panic_runtime = |tcx, cnum| {
         assert_eq!(cnum, LOCAL_CRATE);
         tcx.sess.contains_name(tcx.hir().krate_attrs(), sym::panic_runtime)

src/librustdoc/doctest.rs

@@ -1221,7 +1221,7 @@ impl<'a, 'hir, 'tcx> HirCollector<'a, 'hir, 'tcx> {
     ) {
         let ast_attrs = self.tcx.hir().attrs(hir_id);
         if let Some(ref cfg) = ast_attrs.cfg(self.tcx, &FxHashSet::default()) {
-            if !cfg.matches(&self.sess.parse_sess, Some(self.sess.features_untracked())) {
+            if !cfg.matches(&self.sess.parse_sess, Some(self.tcx.features())) {
                 return;
             }
         }

src/tools/clippy/clippy_lints/src/attrs.rs

@@ -472,7 +472,7 @@ fn check_clippy_lint_names(cx: &LateContext<'_>, name: Symbol, items: &[NestedMe
 
 fn check_lint_reason(cx: &LateContext<'_>, name: Symbol, items: &[NestedMetaItem], attr: &'_ Attribute) {
     // Check for the feature
-    if !cx.tcx.sess.features_untracked().lint_reasons {
+    if !cx.tcx.features().lint_reasons {
         return;
     }