regress-121658.js   [plain text]

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* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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* The Original Code is JavaScript Engine testing utilities.
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* The Initial Developer of the Original Code is Netscape Communications Corp.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
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* Contributor(s): timeless@mac.com,pschwartau@netscape.com
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*
*
* 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 bug = 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()
{
  enterFunc('test');
  printBugNumber(bug);
  printStatus(msg);
 
  for (var i=0; i<UBound; i++)
  {
    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
  }

  exitFunc ('test');
}