1 /* 2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /** 25 * There was a bug in the old Lower that didn't fully propagate type information 26 * by way of assignment. 'q' in the example below would have finished a double 27 * even though it can get an object value through the assignment 'q = l' 28 * 29 * Furthermore, this caused type coercion to be done at q = l, and not a q = q * 2, 30 * which is a bug. This test ensures it happens in the correct order 31 * 32 * @test 33 * @run 34 */ 35 36 function createObject() { 37 var obj = { valueOf: function() { print("toNumber coercion"); return 17; }} 38 return obj; 39 } 40 41 function f() { 42 var l = 1.2; //number 43 var q = 2.3; //number 44 for (var i = 0; i < 2; i++) { 45 q = l; // q = toNumber(l), no coercion here 46 print("assignment done"); 47 q = q * 2; // q = q * 2, coercion here 48 print("multiplication done"); 49 l = createObject(); 50 } 51 } 52 53 f();