/* * The contents of this file are subject to the Netscape Public * License Version 1.1 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.mozilla.org/NPL/ * * Software distributed under the License is distributed on an "AS * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or * implied. See the License for the specific language governing * rights and limitations under the License. * * The Original Code is mozilla.org code. * * The Initial Developer of the Original Code is Netscape * Communications Corporation. Portions created by Netscape are * Copyright (C) 1998 Netscape Communications Corporation. * All Rights Reserved. * * Contributor(s): igor@icesoft.no, pschwartau@netscape.com * Date: 24 September 2001 * * SUMMARY: Try assigning arr.length = new Number(n) * From correspondence with Igor Bukanov <igor@icesoft.no> * See http://bugzilla.mozilla.org/show_bug.cgi?id=101488 * * Without the "new" keyword, assigning arr.length = Number(n) worked. * But with it, Rhino was giving an error "Inappropriate array length" * and SpiderMonkey was exiting without giving any error or return value - * * Comments on the Rhino code by igor@icesoft.no: * * jsSet_length requires that the new length value should be an instance * of Number. But according to Ecma 15.4.5.1, item 12-13, an error should * be thrown only if ToUint32(length_value) != ToNumber(length_value) */ //----------------------------------------------------------------------------- var UBound = 0; var bug = 101488; var summary = 'Try assigning arr.length = new Number(n)'; var status = ''; var statusitems = []; var actual = ''; var actualvalues = []; var expect= ''; var expectedvalues = []; var arr = []; status = inSection(1); arr = Array(); tryThis('arr.length = new Number(1);'); actual = arr.length; expect = 1; addThis(); status = inSection(2); arr = Array(5); tryThis('arr.length = new Number(1);'); actual = arr.length; expect = 1; addThis(); status = inSection(3); arr = Array(); tryThis('arr.length = new Number(17);'); actual = arr.length; expect = 17; addThis(); status = inSection(4); arr = Array(5); tryThis('arr.length = new Number(17);'); actual = arr.length; expect = 17; addThis(); /* * Also try the above with the "new" keyword before Array(). * Array() and new Array() should be equivalent, by ECMA 15.4.1.1 */ status = inSection(5); arr = new Array(); tryThis('arr.length = new Number(1);'); actual = arr.length; expect = 1; addThis(); status = inSection(6); arr = new Array(5); tryThis('arr.length = new Number(1);'); actual = arr.length; expect = 1; addThis(); arr = new Array(); tryThis('arr.length = new Number(17);'); actual = arr.length; expect = 17; addThis(); status = inSection(7); arr = new Array(5); tryThis('arr.length = new Number(17);'); actual = arr.length; expect = 17; addThis(); //----------------------------------------------------------------------------- test(); //----------------------------------------------------------------------------- function tryThis(s) { try { eval(s); } catch(e) { // keep going } } function addThis() { statusitems[UBound] = status; actualvalues[UBound] = actual; expectedvalues[UBound] = expect; UBound++; } function test() { enterFunc ('test'); printBugNumber (bug); printStatus (summary); for (var i=0; i<UBound; i++) { reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]); } exitFunc ('test'); }