ecma_3/Object/regress-72773.js

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/*
 * Date: 09 May 2001
 *
 * SUMMARY: Regression test: we shouldn't crash on this code
 * See http://bugzilla.mozilla.org/show_bug.cgi?id=72773
 *
 * See ECMA-262 Edition 3 13-Oct-1999, Section 8.6.2 re [[Class]] property.
 *
 * Same as class-001.js - but testing user-defined types here, not
 * native types.  Therefore we expect the [[Class]] property to equal
 * 'Object' in each case -
 *
 * The getJSClass() function we use is in a utility file, e.g. "shell.js"
 */
//-----------------------------------------------------------------------------
var gTestfile = 'regress-72773.js';
var BUGNUMBER = 72773;
var summary = "Regression test: we shouldn't crash on this code";
var status = '';
var actual = '';
var expect = '';
var sToEval = '';

/*
 * This code should produce an error, but not a crash.
 *  'TypeError: Function.prototype.toString called on incompatible object'
 */
sToEval += 'function Cow(name){this.name = name;}'
sToEval += 'function Calf(str){this.name = str;}'
sToEval += 'Calf.prototype = Cow;'
sToEval += 'new Calf().toString();'

status = 'Trying to catch an expected error';
try
{
  eval(sToEval);
}
catch(e)
{
  actual = getJSClass(e);
  expect = 'Error';
}


//----------------------------------------------------------------------------------------------
test();
//----------------------------------------------------------------------------------------------


function test()
{
  enterFunc ('test');
  printBugNumber(BUGNUMBER);
  printStatus (summary);

  reportCompare(expect, actual, status);

  exitFunc ('test');
}