1 files changed, 13 insertions, 0 deletions
diff --git a/compiler/rustc_resolve/src/imports.rs b/compiler/rustc_resolve/src/imports.rs
index b1b234eb757..46e52e1f131 100644
--- a/compiler/rustc_resolve/src/imports.rs
+++ b/compiler/rustc_resolve/src/imports.rs
@@ -182,6 +182,19 @@ pub(crate) struct ImportData<'ra> {
 /// so we can use referential equality to compare them.
 pub(crate) type Import<'ra> = Interned<'ra, ImportData<'ra>>;
 
+// Allows us to use Interned without actually enforcing (via Hash/PartialEq/...) uniqueness of the
+// contained data.
+// FIXME: We may wish to actually have at least debug-level assertions that Interned's guarantees
+// are upheld.
+impl std::hash::Hash for ImportData<'_> {
+    fn hash<H>(&self, _: &mut H)
+    where
+        H: std::hash::Hasher,
+    {
+        unreachable!()
+    }
+}
+
 impl<'ra> ImportData<'ra> {
     pub(crate) fn is_glob(&self) -> bool {
         matches!(self.kind, ImportKind::Glob { .. })