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test/script/basic/typecoerce.js@dcbf5e2121e3 (annotated)

test/script/basic/typecoerce.js

Wed, 03 Jun 2015 10:42:06 +0200

author

hannesw

date

Wed, 03 Jun 2015 10:42:06 +0200

changeset 1393

dcbf5e2121e3

parent 962

ac62e33a99b0

permissions

-rw-r--r--

8066220: Fuzzing bug: MethodHandle bug (Object,Object) != (boolean)Object
Reviewed-by: lagergren, attila, sundar

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();