Keep new arrays allocated with 'new Array(N)' in fast mode

test/fuzz-natives/base.js

Index: test/fuzz-natives/base.js
diff --git a/test/fuzz-natives/base.js b/test/fuzz-natives/base.js
index b9f70043fb5d7b6c4429e250a9a38d343180ba38..d1f721d0c0b301eb35926fee39c5937ac58b1014 100644
--- a/test/fuzz-natives/base.js
+++ b/test/fuzz-natives/base.js
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// Flags: --allow-natives-syntax
+
 // TODO(jkummerow): There are many ways to improve these tests, e.g.:
 // - more variance in randomized inputs
 // - better time complexity management
@@ -15,7 +17,9 @@ function makeArguments() {
   result.push(17);
   result.push(-31);
   result.push(new Array(100));
-  result.push(new Array(100003));
+  var a = %NormalizeElements([]);
+  a.length = 100003;
+  result.push(a);
   result.push(Number.MIN_VALUE);
   result.push("whoops");
   result.push("x");