1 files changed, 18 insertions, 2 deletions

diff --git a/crates/ra_hir/src/ty.rs b/crates/ra_hir/src/ty.rs
index 08561573b..2dc1de41a 100644
--- a/crates/ra_hir/src/ty.rs
+++ b/crates/ra_hir/src/ty.rs
@@ -480,7 +480,15 @@ impl Ty {
                     t.walk(f);
                 }
             }
-            _ => {}
+            Ty::Bool
+            | Ty::Char
+            | Ty::Int(_)
+            | Ty::Float(_)
+            | Ty::Str
+            | Ty::Never
+            | Ty::Param { .. }
+            | Ty::Infer(_)
+            | Ty::Unknown => {}
         }
     }
 
@@ -526,7 +534,15 @@ impl Ty {
                 }
                 substs.0 = v.into();
             }
-            _ => {}
+            Ty::Bool
+            | Ty::Char
+            | Ty::Int(_)
+            | Ty::Float(_)
+            | Ty::Str
+            | Ty::Never
+            | Ty::Param { .. }
+            | Ty::Infer(_)
+            | Ty::Unknown => {}
         }
     }