From a08d42555ac42ad1e9bf4b13f44ac46c5bb2dab4 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Sun, 24 Jan 2021 15:37:57 +0000
Subject: [PATCH] fix infinite recursion in `ufuzz` code generation (#4592)

---
 test/ufuzz/index.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/test/ufuzz/index.js b/test/ufuzz/index.js
index a9676fc0..f8d648bc 100644
--- a/test/ufuzz/index.js
+++ b/test/ufuzz/index.js
@@ -1587,9 +1587,10 @@ function getVarName(noConst) {
 function createVarName(maybe, dontStore) {
     if (!maybe || rng(2)) {
         var suffix = rng(3);
-        var name;
+        var name, tries = 10;
         do {
             name = VAR_NAMES[rng(VAR_NAMES.length)];
+            if (--tries < 0) suffix++;
             if (suffix) name += "_" + suffix;
         } while (unique_vars.indexOf(name) >= 0 || block_vars.indexOf(name) >= 0 || async && name == "await");
         if (!dontStore) VAR_NAMES.push(name);
-- 
2.34.1