From eaf81c2e3ef174c0e257e010e8ee833772c9ec05 Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Sun, 10 Feb 2019 15:16:25 +0100
Subject: [PATCH] miri value visitor: use  in macro

---
 src/librustc_mir/interpret/visitor.rs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/librustc_mir/interpret/visitor.rs b/src/librustc_mir/interpret/visitor.rs
index 930bcb44374..4ff5cde08d0 100644
--- a/src/librustc_mir/interpret/visitor.rs
+++ b/src/librustc_mir/interpret/visitor.rs
@@ -125,14 +125,14 @@ impl<'a, 'mir, 'tcx, M: Machine<'a, 'mir, 'tcx>> Value<'a, 'mir, 'tcx, M>
 }
 
 macro_rules! make_value_visitor {
-    ($visitor_trait_name:ident, $($mutability:ident)*) => {
+    ($visitor_trait_name:ident, $($mutability:ident)?) => {
         // How to traverse a value and what to do when we are at the leaves.
         pub trait $visitor_trait_name<'a, 'mir, 'tcx: 'mir+'a, M: Machine<'a, 'mir, 'tcx>>: Sized {
             type V: Value<'a, 'mir, 'tcx, M>;
 
             /// The visitor must have an `EvalContext` in it.
-            fn ecx(&$($mutability)* self)
-                -> &$($mutability)* EvalContext<'a, 'mir, 'tcx, M>;
+            fn ecx(&$($mutability)? self)
+                -> &$($mutability)? EvalContext<'a, 'mir, 'tcx, M>;
 
             // Recursive actions, ready to be overloaded.
             /// Visit the given value, dispatching as appropriate to more specialized visitors.