Security: type confusion lead to information leak in decodeURI

test/mjsunit/regress/regress-602970.js

Index: test/mjsunit/regress/regress-602970.js
diff --git a/test/mjsunit/regress/regress-602970.js b/test/mjsunit/regress/regress-602970.js
new file mode 100644
index 0000000000000000000000000000000000000000..927d3bf5a8265d790f52bda9c3331f726d5bc24f
--- /dev/null
+++ b/test/mjsunit/regress/regress-602970.js
@@ -0,0 +1,17 @@
+// Copyright 2016 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --debug-code
+
+// flag --debug-code ensures that we'll abort with a failed smi check without
+// the fix.
+
+var num = new Number(10);
+Array.prototype.__defineGetter__(0,function(){
+    return num;
+})
+Array.prototype.__defineSetter__(0,function(value){
+})
+var str=decodeURI("%E7%9A%84");
+assertEquals(0x7684, str.charCodeAt(0));