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-rw-r--r--compiler/rustc_infer/src/infer/mod.rs4
1 files changed, 3 insertions, 1 deletions
diff --git a/compiler/rustc_infer/src/infer/mod.rs b/compiler/rustc_infer/src/infer/mod.rs
index bb734ccb20e..88e107d65a2 100644
--- a/compiler/rustc_infer/src/infer/mod.rs
+++ b/compiler/rustc_infer/src/infer/mod.rs
@@ -1166,7 +1166,9 @@ impl<'tcx> InferCtxt<'tcx> {
                         origin,
                         val: ConstVariableValue::Unknown { universe: self.universe() },
                     });
-                self.tcx.mk_const(const_var_id, self.tcx.type_of(param.def_id)).into()
+                self.tcx
+                    .mk_const(const_var_id, self.tcx.bound_type_of(param.def_id).subst_identity())
+                    .into()
             }
         }
     }