diff options
| -rw-r--r-- | compiler/rustc_passes/src/stability.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/compiler/rustc_passes/src/stability.rs b/compiler/rustc_passes/src/stability.rs index df6051bb59a..30f34d96f12 100644 --- a/compiler/rustc_passes/src/stability.rs +++ b/compiler/rustc_passes/src/stability.rs @@ -820,7 +820,10 @@ impl<'tcx> Visitor<'tcx> for Checker<'tcx> { ); if item_is_allowed { - // Check parent modules stability as well + // Check parent modules stability as well if the item the path refers to is itself + // stable. We only emit warnings for unstable path segments if the item is stable + // because stability is often inherited, so the most common case is that both the + // segments and the item are unstable behind the same feature flag. // // We check here rather than in `visit_path_segment` to prevent visiting the last // path segment twice |