tor-browser

The Tor Browser
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mapped-arguments-nonconfigurable-strict-delete-1.js (725B)

      1 // Copyright (C) 2015 André Bargull. All rights reserved.
      2 // This code is governed by the BSD license found in the LICENSE file.
      3 
      4 /*---
      5 info: Mapped arguments object with non-configurable property
      6 description: >
      7    Mapping works when property is non-configurable, arguments property
      8    was not deleted. [[Delete]] operations throws TypeError if called
      9    from strict-mode code.
     10 flags: [noStrict]
     11 ---*/
     12 
     13 function argumentsAndStrictDelete(a) {
     14  Object.defineProperty(arguments, "0", {configurable: false});
     15 
     16  var args = arguments;
     17  assert.throws(TypeError, function() { "use strict"; delete args[0]; });
     18  assert.sameValue(a, 1);
     19  assert.sameValue(arguments[0], 1);
     20 }
     21 argumentsAndStrictDelete(1);
     22 
     23 reportCompare(0, 0);