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test/tools/javac/foreach/ListOfListTest.java@93012e2a5d1d (annotated)

test/tools/javac/foreach/ListOfListTest.java

Sat, 07 Nov 2020 10:30:02 +0800

author

aoqi

date

Sat, 07 Nov 2020 10:30:02 +0800

changeset 3938

93012e2a5d1d

parent 2525

2eb010b6cb22

permissions

-rw-r--r--

Added tag mips-jdk8u275-b01 for changeset eb6ee6a5f2fe

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2003, Oracle and/or its affiliates. All rights reserved.
aoqi@0	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0	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.
aoqi@0	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).
aoqi@0	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.
aoqi@0	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	* @test
aoqi@0	26	* @bug 4915435
aoqi@0	27	* @summary NullPointerError in Resolve.findMethod() with foreach vs generics
aoqi@0	28	* @author gafter
aoqi@0	29	*/
aoqi@0	30
aoqi@0	31	import java.util.List;
aoqi@0	32	import java.util.ArrayList;
aoqi@0	33
aoqi@0	34	public class ListOfListTest {
aoqi@0	35
aoqi@0	36	public static void main(String[] argv) {
aoqi@0	37	List<List<Integer>> ll = new ArrayList<List<Integer>>();
aoqi@0	38	List<Integer> il = new ArrayList<Integer>();
aoqi@0	39	ll.add(il);
aoqi@0	40	il.add(1);
aoqi@0	41	int sum = 0;
aoqi@0	42	for (Integer i : ll.get(0)) {
aoqi@0	43	sum = identity(sum) + i;
aoqi@0	44	}
aoqi@0	45
aoqi@0	46	if (sum != 1) throw new Error(""+sum);
aoqi@0	47
aoqi@0	48	enumsToo();
aoqi@0	49	}
aoqi@0	50
aoqi@0	51	static int identity(Integer i) {
aoqi@0	52	switch (i) {
aoqi@0	53	case 0: return 0;
aoqi@0	54	default: return i;
aoqi@0	55	}
aoqi@0	56	}
aoqi@0	57
aoqi@0	58	enum E { a, b, c, d, e };
aoqi@0	59
aoqi@0	60	static class Box<T> {
aoqi@0	61	Box(T t) { this.t = t; }
aoqi@0	62	T t;
aoqi@0	63	T get() { return t; }
aoqi@0	64	}
aoqi@0	65
aoqi@0	66	static void enumsToo() {
aoqi@0	67	Box<E> box = new Box<E>(E.c);
aoqi@0	68	switch (box.get()) {
aoqi@0	69	case a: throw new Error();
aoqi@0	70	case c: break;
aoqi@0	71	default: throw new Error();
aoqi@0	72	}
aoqi@0	73	Box<Integer> boxi = new Box<Integer>(12);
aoqi@0	74	switch (boxi.get()) {
aoqi@0	75	case 0: throw new Error();
aoqi@0	76	case 12: break;
aoqi@0	77	default: throw new Error();
aoqi@0	78	}
aoqi@0	79	}
aoqi@0	80	}