Tracking the old name of renamed unstable library attribute

Signed-off-by: xizheyin <xizheyin@smail.nju.edu.cn>

1 files changed, 4 insertions, 4 deletions

diff --git a/compiler/rustc_passes/src/lib_features.rs b/compiler/rustc_passes/src/lib_features.rs
index b3e6ee9512c..127e0df1332 100644
--- a/compiler/rustc_passes/src/lib_features.rs
+++ b/compiler/rustc_passes/src/lib_features.rs
@@ -40,7 +40,7 @@ impl<'tcx> LibFeatureCollector<'tcx> {
         };
 
         let feature_stability = match level {
-            StabilityLevel::Unstable { .. } => FeatureStability::Unstable,
+            StabilityLevel::Unstable { old_name, .. } => FeatureStability::Unstable { old_name },
             StabilityLevel::Stable { since, .. } => FeatureStability::AcceptedSince(match since {
                 StableSince::Version(v) => Symbol::intern(&v.to_string()),
                 StableSince::Current => sym::env_CFG_RELEASE,
@@ -71,7 +71,7 @@ impl<'tcx> LibFeatureCollector<'tcx> {
                     });
                 }
             }
-            (FeatureStability::AcceptedSince(_), Some((FeatureStability::Unstable, _))) => {
+            (FeatureStability::AcceptedSince(_), Some((FeatureStability::Unstable { .. }, _))) => {
                 self.tcx.dcx().emit_err(FeaturePreviouslyDeclared {
                     span,
                     feature,
@@ -79,7 +79,7 @@ impl<'tcx> LibFeatureCollector<'tcx> {
                     prev_declared: "unstable",
                 });
             }
-            (FeatureStability::Unstable, Some((FeatureStability::AcceptedSince(_), _))) => {
+            (FeatureStability::Unstable { .. }, Some((FeatureStability::AcceptedSince(_), _))) => {
                 self.tcx.dcx().emit_err(FeaturePreviouslyDeclared {
                     span,
                     feature,
@@ -88,7 +88,7 @@ impl<'tcx> LibFeatureCollector<'tcx> {
                 });
             }
             // duplicate `unstable` feature is ok.
-            (FeatureStability::Unstable, Some((FeatureStability::Unstable, _))) => {}
+            (FeatureStability::Unstable { .. }, Some((FeatureStability::Unstable { .. }, _))) => {}
         }
     }
 }