Wed, 01 Oct 2014 07:47:24 -0700
Added tag jdk8u40-b08 for changeset 89551828b279
aoqi@0 | 1 | /* |
aoqi@0 | 2 | * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
aoqi@0 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
attila@962 | 4 | * |
aoqi@0 | 5 | * This code is free software; you can redistribute it and/or modify it |
aoqi@0 | 6 | * under the terms of the GNU General Public License version 2 only, as |
aoqi@0 | 7 | * published by the Free Software Foundation. |
attila@962 | 8 | * |
aoqi@0 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
aoqi@0 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
aoqi@0 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
aoqi@0 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
aoqi@0 | 13 | * accompanied this code). |
attila@962 | 14 | * |
aoqi@0 | 15 | * You should have received a copy of the GNU General Public License version |
aoqi@0 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
aoqi@0 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
attila@962 | 18 | * |
aoqi@0 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
aoqi@0 | 20 | * or visit www.oracle.com if you need additional information or have any |
aoqi@0 | 21 | * questions. |
aoqi@0 | 22 | */ |
aoqi@0 | 23 | |
aoqi@0 | 24 | /** |
aoqi@0 | 25 | * There was a bug in the old Lower that didn't fully propagate type information |
aoqi@0 | 26 | * by way of assignment. 'q' in the example below would have finished a double |
attila@962 | 27 | * even though it can get an object value through the assignment 'q = l' |
attila@962 | 28 | * |
attila@962 | 29 | * Furthermore, this caused type coercion to be done at q = l, and not a q = q * 2, |
aoqi@0 | 30 | * which is a bug. This test ensures it happens in the correct order |
aoqi@0 | 31 | * |
aoqi@0 | 32 | * @test |
aoqi@0 | 33 | * @run |
aoqi@0 | 34 | */ |
aoqi@0 | 35 | |
aoqi@0 | 36 | function createObject() { |
aoqi@0 | 37 | var obj = { valueOf: function() { print("toNumber coercion"); return 17; }} |
aoqi@0 | 38 | return obj; |
aoqi@0 | 39 | } |
aoqi@0 | 40 | |
aoqi@0 | 41 | function f() { |
aoqi@0 | 42 | var l = 1.2; //number |
aoqi@0 | 43 | var q = 2.3; //number |
aoqi@0 | 44 | for (var i = 0; i < 2; i++) { |
attila@962 | 45 | q = l; // q = toNumber(l), no coercion here |
attila@962 | 46 | print("assignment done"); |
attila@962 | 47 | q = q * 2; // q = q * 2, coercion here |
attila@962 | 48 | print("multiplication done"); |
attila@962 | 49 | l = createObject(); |
aoqi@0 | 50 | } |
aoqi@0 | 51 | } |
aoqi@0 | 52 | |
aoqi@0 | 53 | f(); |