fix infinite recursion in ufuzz code generation (#4592)

mishoo · Jan 24, 2021 · a08d425 · a08d425
1 parent fd7ad8e
commit a08d425
Showing 1 changed file with 2 additions and 1 deletion.
diff --git 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);