Intern Substitutions

(Costs a bit of performance, reduces memory usage on RA by ~10%.)

1 files changed, 1 insertions, 1 deletions

diff --git a/crates/hir_ty/src/infer/expr.rs b/crates/hir_ty/src/infer/expr.rs
index cbbfa8b5c..ee6763926 100644
--- a/crates/hir_ty/src/infer/expr.rs
+++ b/crates/hir_ty/src/infer/expr.rs
@@ -462,7 +462,7 @@ impl<'a> InferenceContext<'a> {
                     };
                     match canonicalized.decanonicalize_ty(derefed_ty.value).kind(&Interner) {
                         TyKind::Tuple(_, substs) => name.as_tuple_index().and_then(|idx| {
-                            substs.interned().get(idx).map(|a| a.assert_ty_ref(&Interner)).cloned()
+                            substs.as_slice(&Interner).get(idx).map(|a| a.assert_ty_ref(&Interner)).cloned()
                         }),
                         TyKind::Adt(AdtId(hir_def::AdtId::StructId(s)), parameters) => {
                             let local_id = self.db.struct_data(*s).variant_data.field(name)?;