tests/mozilla/js1_5/Regress/regress-96128-n.js

   1 /*
   2 * The contents of this file are subject to the Netscape Public
   3 * License Version 1.1 (the "License"); you may not use this file
   4 * except in compliance with the License. You may obtain a copy of
   5 * the License at http://www.mozilla.org/NPL/
   6 *
   7 * Software distributed under the License is distributed on an "AS
   8 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
   9 * implied. See the License for the specific language governing
  10 * rights and limitations under the License.
  11 *
  12 * The Original Code is mozilla.org code.
  13 *
  14 * The Initial Developer of the Original Code is Netscape
  15 * Communications Corporation.  Portions created by Netscape are
  16 * Copyright (C) 1998 Netscape Communications Corporation.
  17 * All Rights Reserved.
  18 *
  19 * Contributor(s): jband@netscape.com, pschwartau@netscape.com
  20 * Date: 29 Aug 2001
  21 *
  22 * SUMMARY: Negative test that JS infinite recursion protection works.
  23 * We expect the code here to fail (i.e. exit code 3), but NOT crash.
  24 *
  25 * See http://bugzilla.mozilla.org/show_bug.cgi?id=96128
  26 */
  27 //-----------------------------------------------------------------------------
  28 var bug = 96128;
  29 var summary = 'Testing that JS infinite recursion protection works';
  30
  31
  32 function objRecurse()
  33 {
  34   /*
  35    * jband:
  36    *
  37    * Causes a stack overflow crash in debug builds of both the browser
  38    * and the shell. In the release builds this is safely caught by the
  39    * "too much recursion" mechanism. If I remove the 'new' from the code below
  40    * this is safely caught in both debug and release builds. The 'new' causes a
  41    * lookup for the Constructor name and seems to (at least) double the number
  42    * of items on the C stack for the given interpLevel depth.
  43    */
  44   return new objRecurse();
  45 }
  46
  47
  48
  49 //-----------------------------------------------------------------------------
  50 test();
  51 //-----------------------------------------------------------------------------
  52
  53
  54 function test()
  55 {
  56   enterFunc ('test');
  57   printBugNumber (bug);
  58   printStatus (summary);
  59
  60   // we expect this to fail (exit code 3), but NOT crash. -
  61   var obj = new objRecurse();
  62
  63   exitFunc ('test');
  64 }