array-isArray-proxy-recursion.js

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/*

 * Any copyright is dedicated to the Public Domain.

 * http://creativecommons.org/licenses/publicdomain/

*/

//-----------------------------------------------------------------------------

var BUGNUMBER = 1282047;

var summary = 'Infinite recursion via Array.isArray on a proxy';

print(BUGNUMBER + ": " + summary);

/**************

 * BEGIN TEST *

 **************/

var proxy = Proxy.revocable([], {}).proxy;

// A depth of 100000 ought to be enough for any platform to consume its entire

// stack, hopefully without making any recalcitrant platforms time out.  If no

// timeout happens, the assertEq checks for the proper expected value.

for (var i = 0; i < 1e5; i++)

  proxy = new Proxy(proxy, {});

try

  assertEq(Array.isArray(proxy), true);

  // If we reach here, it's cool, we just didn't consume the entire stack.

catch (e)

  assertEq(e instanceof InternalError, true,

           "should have thrown for over-recursion");

/******************************************************************************/

if (typeof reportCompare === "function")

  reportCompare(true, true);

print("Tests complete");