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-rw-r--r--src/librustc/ty/util.rs3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/librustc/ty/util.rs b/src/librustc/ty/util.rs
index f667100465d..b01b77bbcf8 100644
--- a/src/librustc/ty/util.rs
+++ b/src/librustc/ty/util.rs
@@ -466,8 +466,9 @@ impl<'a, 'gcx, 'tcx, W> TypeVisitor<'tcx> for TypeIdHasher<'a, 'gcx, 'tcx, W>
                     self.def_id(d);
                 }
             }
-            TyTuple(tys, _) => {
+            TyTuple(tys, defaulted) => {
                 self.hash(tys.len());
+                self.hash(defaulted);
             }
             TyParam(p) => {
                 self.hash(p.idx);