create a UnifiedExpressionVisitor for passes that want a single visitor function, to avoid confusion with having both visit* and visitExpression in a single pass (#357)

1 files changed, 1 insertions, 1 deletions

diff --git a/src/passes/Metrics.cpp b/src/passes/Metrics.cpp
index 19df981b8..8890c3cc3 100644
--- a/src/passes/Metrics.cpp
+++ b/src/passes/Metrics.cpp
@@ -24,7 +24,7 @@ namespace wasm {
 using namespace std;
 
 // Prints metrics between optimization passes.
-struct Metrics : public WalkerPass<PostWalker<Metrics>> {
+struct Metrics : public WalkerPass<PostWalker<Metrics, UnifiedExpressionVisitor<Metrics>>> {
   static Metrics *lastMetricsPass;
 
   map<const char *, int> counts;