bjoernager/rust
bjoernager/rust
1
Fork 0
Code Activity

passes: check implied feature exists

Browse source 
Add a check confirming that features referenced in `implied_by` meta
items actually exist.

Signed-off-by: David Wood <david.wood@huawei.com>
This commit is contained in:
David Wood 2022-07-20 14:52:23 +01:00
parent 6246d66c6d
commit e5872990d1
5 changed files with 60 additions and 30 deletions
Download patch file Download diff file Expand all files Collapse all files

8
compiler/rustc_passes/src/lib_features.rs
View file

@ -71,11 +71,11 @@ impl<'tcx> LibFeatureCollector<'tcx> {
fn collect_feature(&mut self, feature: Symbol, since: Option<Symbol>, span: Span) {
let already_in_stable = self.lib_features.stable.contains_key(&feature);
let already_in_unstable = self.lib_features.unstable.contains(&feature);
let already_in_unstable = self.lib_features.unstable.contains_key(&feature);
match (since, already_in_stable, already_in_unstable) {
(Some(since), _, false) => {
if let Some(prev_since) = self.lib_features.stable.get(&feature) {
if let Some((prev_since, _)) = self.lib_features.stable.get(&feature) {
if *prev_since != since {
self.span_feature_error(
span,
@ -89,10 +89,10 @@ impl<'tcx> LibFeatureCollector<'tcx> {
}
}
self.lib_features.stable.insert(feature, since);
self.lib_features.stable.insert(feature, (since, span));
}
(None, false, _) => {
self.lib_features.unstable.insert(feature);
self.lib_features.unstable.insert(feature, span);
}
(Some(_), _, true) | (None, true, _) => {
self.span_feature_error(