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test/tools/javac/T5053846/MethodRefDupInConstantPoolTest.java@2eb010b6cb22 (annotated)

test/tools/javac/T5053846/MethodRefDupInConstantPoolTest.java

Thu, 31 Aug 2017 15:17:03 +0800

author

aoqi

date

Thu, 31 Aug 2017 15:17:03 +0800

changeset 2525

2eb010b6cb22

parent 1687

a4be2c2fe0a1

parent 0

959103a6100f

permissions

-rw-r--r--

merge

aoqi@0	1	/*
aoqi@0	2	* Copyright (c) 2013, 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 5053846 8011432
aoqi@0	27	* @summary javac: MethodRef entries are duplicated in the constant pool
aoqi@0	28	* @summary javac, compiler regression iterable + captured type
aoqi@0	29	*/
aoqi@0	30
aoqi@0	31	import java.io.PrintWriter;
aoqi@0	32	import java.io.StringWriter;
aoqi@0	33	import java.nio.file.Paths;
aoqi@0	34	import java.util.*;
aoqi@0	35
aoqi@0	36	public class MethodRefDupInConstantPoolTest {
aoqi@0	37
aoqi@0	38	private static final String methodToLookFor =
aoqi@0	39	"java/util/Vector.iterator:()Ljava/util/Iterator;";
aoqi@0	40
aoqi@0	41	public static void main(String[] args) {
aoqi@0	42	new MethodRefDupInConstantPoolTest().run();
aoqi@0	43	}
aoqi@0	44
aoqi@0	45	void run() {
aoqi@0	46	check("-v", Paths.get(System.getProperty("test.classes"),
aoqi@0	47	this.getClass().getSimpleName() + "$TestHelper1.class").toString());
aoqi@0	48	check("-v", Paths.get(System.getProperty("test.classes"),
aoqi@0	49	this.getClass().getSimpleName() + "$TestHelper2.class").toString());
aoqi@0	50	check("-v", Paths.get(System.getProperty("test.classes"),
aoqi@0	51	this.getClass().getSimpleName() + "$TestHelper3.class").toString());
aoqi@0	52	check("-v", Paths.get(System.getProperty("test.classes"),
aoqi@0	53	this.getClass().getSimpleName() + "$TestHelper4.class").toString());
aoqi@0	54	}
aoqi@0	55
aoqi@0	56	void check(String... params) {
aoqi@0	57	StringWriter s;
aoqi@0	58	String out;
aoqi@0	59	try (PrintWriter pw = new PrintWriter(s = new StringWriter())) {
aoqi@0	60	com.sun.tools.javap.Main.run(params, pw);
aoqi@0	61	out = s.toString();
aoqi@0	62	}
aoqi@0	63	String constantPool = getConstantPool(out);
aoqi@0	64	if (constantPool.indexOf(methodToLookFor) !=
aoqi@0	65	constantPool.lastIndexOf(methodToLookFor)) {
aoqi@0	66	throw new AssertionError("There is more than one entry for the method seek " +
aoqi@0	67	methodToLookFor);
aoqi@0	68	}
aoqi@0	69	}
aoqi@0	70
aoqi@0	71	String getConstantPool(String out) {
aoqi@0	72	int start = out.indexOf("Constant pool:");
aoqi@0	73	int end = out.indexOf("{");
aoqi@0	74	return out.substring(start, end);
aoqi@0	75	}
aoqi@0	76
aoqi@0	77	class TestHelper1 {
aoqi@0	78	void m() {
aoqi@0	79	Vector v = new Vector();
aoqi@0	80	Iterator iter = v.iterator();
aoqi@0	81	while (iter.hasNext()) {
aoqi@0	82	Object o = iter.next();
aoqi@0	83	Object o2 = o;
aoqi@0	84	}
aoqi@0	85	for (Object o: v) {
aoqi@0	86	Object o2 = o;
aoqi@0	87	}
aoqi@0	88	}
aoqi@0	89	}
aoqi@0	90
aoqi@0	91	class TestHelper2<X extends Number & Iterable<String>> {
aoqi@0	92	void test(X x) {
aoqi@0	93	for (String s : x) { }
aoqi@0	94	}
aoqi@0	95	}
aoqi@0	96
aoqi@0	97	interface Data extends Iterable<String> {}
aoqi@0	98
aoqi@0	99	class TestHelper3<X extends Number & Iterable<? extends Data>> {
aoqi@0	100	void test(X x) {
aoqi@0	101	for (Data s : x) { }
aoqi@0	102	}
aoqi@0	103	}
aoqi@0	104
aoqi@0	105	class TestHelper4 {
aoqi@0	106	void test(Iterable<? extends Data> t) {
aoqi@0	107	for(Object a: t.iterator().next());
aoqi@0	108	}
aoqi@0	109	}
aoqi@0	110	}