The Tor Browser: js/src/tests/js1_5/extensions/regress-226507.js@129ffea94266 (annotated)

js/src/tests/js1_5/extensions/regress-226507.js@129ffea94266 (annotated)

js/src/tests/js1_5/extensions/regress-226507.js

Sat, 03 Jan 2015 20:18:00 +0100

author: Michael Schloh von Bennewitz <michael@schloh.com>
date: Sat, 03 Jan 2015 20:18:00 +0100
branch: TOR_BUG_3246
changeset 7: 129ffea94266
permissions: -rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 /*
  *
  * Date:    24 Nov 2003
  * SUMMARY: Testing for recursion check in js_EmitTree
  *
  * See http://bugzilla.mozilla.org/show_bug.cgi?id=226507
  * Igor's comments:
  *
  * "For example, with N in the test  set to 35, I got on my RedHat
  * Linux 10 box a segmentation fault from js after setting the stack limit
  * to 100K. When I set the stack limit to 20K I still got the segmentation fault.
  * Only after -s was changed to 15K, too-deep recursion was detected:
  *
  ~/w/js/x> ulimit -s
 
  ~/w/js/x> js  fintest.js
  Segmentation fault
  ~/w/js/x> js -S $((20*1024)) fintest.js
  Segmentation fault
  ~/w/js/x> js -S $((15*1024)) fintest.js
  fintest.js:19: InternalError: too much recursion
  *
  * After playing with numbers it seems that while processing try/finally the
  * recursion in js_Emit takes 10 times more space the corresponding recursion
  * in the parser."
  *
  *
  * Note the use of the new -S option to the JS shell to limit stack size.
  * See http://bugzilla.mozilla.org/show_bug.cgi?id=225061. This in turn
  * can be passed to the JS shell by the test driver's -o option, as in:
  *
  * perl jsDriver.pl -e smdebug -fTEST.html -o "-S 100" -l js1_5/Regress
  *
  */
 //-----------------------------------------------------------------------------
 var UBound = 0;
 var BUGNUMBER = 226507;
 var summary = 'Testing for recursion check in js_EmitTree';
 var status = '';
 var statusitems = [];
 var actual = '';
 var actualvalues = [];
 var expect= '';
 var expectedvalues = [];
 /*
  * With stack limit 100K on Linux debug build even N=30 already can cause
  * stack overflow; use 35 to trigger it for sure.
  */
 var N = 350;
 var counter = 0;
 function f()
 {
   ++counter;
 }
 /*
  * Example: if N were 3, this is what |source|
  * would end up looking like:
  *
  *     try { f(); } finally {
  *     try { f(); } finally {
  *     try { f(); } finally {
  *     f(1,1,1,1);
  *     }}}
  *
  */
 var source = "".concat(
   repeat_str("try { f(); } finally {\n", N),
   "f(",
   repeat_str("1,", N),
   "1);\n",
   repeat_str("}", N));
 // Repeat it for additional stress testing
 source += source;
 /*
  * In Rhino, eval() always uses interpreted mode.
  * To use compiled mode, use Script.exec() instead.
  */
 if (typeof Script == 'undefined')
 {
   print('Test skipped. Script not defined.');
   expect = actual = 0;
 }
 else
 {
   try
   {
     var script = Script(source);
     script();
     status = inSection(1);
     actual = counter;
     expect = (N + 1) * 2;
   }
   catch(ex)
   {
     actual = ex + '';
   }
 }
 addThis();
 //-----------------------------------------------------------------------------
 test();
 //-----------------------------------------------------------------------------
 function repeat_str(str, repeat_count)
 {
   var arr = new Array(--repeat_count);
   while (repeat_count != 0)
     arr[--repeat_count] = str;
   return str.concat.apply(str, arr);
 }
 function addThis()
 {
   statusitems[UBound] = status;
   actualvalues[UBound] = actual;
   expectedvalues[UBound] = expect;
   UBound++;
 }
 function test()
 {
   enterFunc('test');
   printBugNumber(BUGNUMBER);
   printStatus(summary);
   for (var i=0; i<UBound; i++)
   {
     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
   }
   exitFunc ('test');
 }