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      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 IS"
      8 * basis, WITHOUT WARRANTY OF ANY KIND, either expressed
      9 * or 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. All
     17 * Rights Reserved.
     18 *
     19 * Contributor(s): pschwartau (at) netscape.com
     20 * Date: 09 May 2001
     21 *
     22 * SUMMARY: Regression test: we shouldn't crash on this code
     23 * See http://bugzilla.mozilla.org/show_bug.cgi?id=72773
     24 *
     25 * See ECMA-262 Edition 3 13-Oct-1999, Section 8.6.2 re [[Class]] property.
     26 *
     27 * Same as class-001.js - but testing user-defined types here, not native types.
     28 * Therefore we expect the [[Class]] property to equal 'Object' in each case -
     29 *
     30 * The getJSClass() function we use is in a utility file, e.g. "shell.js"
     31 */
     32 //-------------------------------------------------------------------------------------------------
     33 var bug = 72773;
     34 var summary = "Regression test: we shouldn't crash on this code";
     35 var status = '';
     36 var actual = '';
     37 var expect = '';
     38 var sToEval = '';
     39 
     40 /*
     41  * This code should produce an error, but not a crash.
     42  *  'TypeError: Function.prototype.toString called on incompatible object'
     43  */
     44 sToEval += 'function Cow(name){this.name = name;}'
     45 sToEval += 'function Calf(str){this.name = str;}'
     46 sToEval += 'Calf.prototype = Cow;'
     47 sToEval += 'new Calf().toString();'
     48 
     49 status = 'Trying to catch an expected error';
     50 try
     51 {
     52   eval(sToEval);
     53 }
     54 catch(e)
     55 {
     56   actual = getJSClass(e);
     57   expect = 'Error';
     58 }
     59 
     60 
     61 //----------------------------------------------------------------------------------------------
     62 test();
     63 //----------------------------------------------------------------------------------------------
     64 
     65 
     66 function test()
     67 {
     68   enterFunc ('test');
     69   printBugNumber (bug);
     70   printStatus (summary);
     71 
     72   reportCompare(expect, actual, status);
     73 
     74   exitFunc ('test');
     75 }
     76