2 files changed, 6 insertions, 0 deletions
diff --git a/src/comp/middle/trans.rs b/src/comp/middle/trans.rs
index c4e5c9c4..72a4fe5c 100644
--- a/src/comp/middle/trans.rs
+++ b/src/comp/middle/trans.rs
@@ -1834,6 +1834,9 @@ fn trans_unary(@block_ctxt cx, ast.unop op,
             }
             ret res(sub.bcx, val);
         }
+        case (ast._mutable) {
+            ret trans_expr(cx, e);
+        }
     }
     fail;
 }
diff --git a/src/comp/middle/typeck.rs b/src/comp/middle/typeck.rs
index a062f79d..e1b8d464 100644
--- a/src/comp/middle/typeck.rs
+++ b/src/comp/middle/typeck.rs
@@ -1229,6 +1229,9 @@ fn check_expr(&@fn_ctxt fcx, @ast.expr expr) -> @ast.expr {
                         }
                     }
                 }
+                case (ast._mutable) {
+                    oper_t = @rec(mut=ast.mut with *oper_t);
+                }
                 case (_) { oper_t = strip_boxes(oper_t); }
             }
             ret @fold.respan[ast.expr_](expr.span,