From 9a63882cd4ebf01ed3ec5fba067e5f3e901f6ad2 Mon Sep 17 00:00:00 2001
From: Jingyu Zhou <jingyuzhou@gmail.com>
Date: Thu, 30 Jul 2020 11:01:52 -0700
Subject: [PATCH] Fix unit test failure

---
 flow/Arena.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/flow/Arena.cpp b/flow/Arena.cpp
index b02f900b20..7a6dfed0f2 100644
--- a/flow/Arena.cpp
+++ b/flow/Arena.cpp
@@ -438,7 +438,7 @@ void testIteratorIncrement() {
 			i += 2;
 		}
 	}
-	{
+	if (size > 0) {
 		int i = xs.size() - 1;
 		for (auto iter = xs.end() - 1; iter >= xs.begin();) {
 			ASSERT(*iter == StringRef(std::to_string(i)));
@@ -454,7 +454,7 @@ void testIteratorIncrement() {
 			i += 2;
 		}
 	}
-	{
+	if (size > 0) {
 		int i = xs.size() - 1;
 		for (auto iter = xs.end() - 1; iter >= xs.begin();) {
 			ASSERT(*iter == StringRef(std::to_string(i)));