From c9b4cd0716ddd1b0def1cc7b26aa94355ab9ef6f Mon Sep 17 00:00:00 2001
From: Alon Zakai <alonzakai@gmail.com>
Date: Mon, 22 Aug 2016 18:16:12 -0700
Subject: drop the first element in a block too, if necessary

---
 src/ast_utils.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/ast_utils.h')

diff --git a/src/ast_utils.h b/src/ast_utils.h
index 2be0196ad..b81413d78 100644
--- a/src/ast_utils.h
+++ b/src/ast_utils.h
@@ -795,7 +795,7 @@ struct AutoDrop : public WalkerPass<ExpressionStackWalker<AutoDrop, Visitor<Auto
   Pass* create() override { return new AutoDrop; }
 
   void visitBlock(Block* curr) {
-    if (curr->list.size() <= 1) return;
+    if (curr->list.size() == 0) return;
     for (Index i = 0; i < curr->list.size() - 1; i++) {
       auto* child = curr->list[i];
       if (isConcreteWasmType(child->type)) {
-- 
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