regress-121658.js - mozsearch

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/* -*- indent-tabs-mode: nil; js-indent-level: 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 Jan 2002

 * SUMMARY: "Too much recursion" errors should be safely caught by try...catch

 * See http://bugzilla.mozilla.org/show_bug.cgi?id=121658

 * In the cases below, we expect i>0. The bug was filed because we

 * were getting i===0; i.e. |i| did not retain the value it had at the

 * location of the error.

*/

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

var UBound = 0;

var BUGNUMBER = 121658;

var msg = '"Too much recursion" errors should be safely caught by try...catch';

var TEST_PASSED = 'i retained the value it had at location of error';

var TEST_FAILED = 'i did NOT retain this value';

var status = '';

var statusitems = [];

var actual = '';

var actualvalues = [];

var expect= '';

var expectedvalues = [];

var i;

function f()

  ++i;

  // try...catch should catch the "too much recursion" error to ensue

try

    f();

  catch(e)

i=0;

f();

status = inSection(1);

actual = (i>0);

expect = true;

addThis();

// Now try in function scope -

function g()

  f();

i=0;

g();

status = inSection(2);

actual = (i>0);

expect = true;

addThis();

// Now try in eval scope -

var sEval = 'function h(){++i; try{h();} catch(e){}}; i=0; h();';

eval(sEval);

status = inSection(3);

actual = (i>0);

expect = true;

addThis();

// Try in eval scope and mix functions up -

sEval = 'function a(){++i; try{h();} catch(e){}}; i=0; a();';

eval(sEval);

status = inSection(4);

actual = (i>0);

expect = true;

addThis();

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

test();

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

function addThis()

  statusitems[UBound] = status;

  actualvalues[UBound] = formatThis(actual);

  expectedvalues[UBound] = formatThis(expect);

  UBound++;

function formatThis(bool)

  return bool? TEST_PASSED : TEST_FAILED;

function test()

  printBugNumber(BUGNUMBER);

  printStatus(msg);

  for (var i=0; i<UBound; i++)

    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);