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test/tools/javac/T5053846/MethodRefDupInConstantPoolTest.java@fa24eba012bd (annotated)

test/tools/javac/T5053846/MethodRefDupInConstantPoolTest.java

Fri, 15 Mar 2013 09:02:26 +0000

author

vromero

date

Fri, 15 Mar 2013 09:02:26 +0000

changeset 1640

fa24eba012bd

child 1687

a4be2c2fe0a1

permissions

-rw-r--r--

5053846: javac: MethodRef entries are duplicated in the constant pool
Reviewed-by: mcimadamore

vromero@1640	1	/*
vromero@1640	2	* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
vromero@1640	3	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
vromero@1640	4	*
vromero@1640	5	* This code is free software; you can redistribute it and/or modify it
vromero@1640	6	* under the terms of the GNU General Public License version 2 only, as
vromero@1640	7	* published by the Free Software Foundation.
vromero@1640	8	*
vromero@1640	9	* This code is distributed in the hope that it will be useful, but WITHOUT
vromero@1640	10	* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
vromero@1640	11	* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
vromero@1640	12	* version 2 for more details (a copy is included in the LICENSE file that
vromero@1640	13	* accompanied this code).
vromero@1640	14	*
vromero@1640	15	* You should have received a copy of the GNU General Public License version
vromero@1640	16	* 2 along with this work; if not, write to the Free Software Foundation,
vromero@1640	17	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
vromero@1640	18	*
vromero@1640	19	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
vromero@1640	20	* or visit www.oracle.com if you need additional information or have any
vromero@1640	21	* questions.
vromero@1640	22	*/
vromero@1640	23
vromero@1640	24	/*
vromero@1640	25	* @test
vromero@1640	26	* @bug 5053846
vromero@1640	27	* @summary javac: MethodRef entries are duplicated in the constant pool
vromero@1640	28	*/
vromero@1640	29
vromero@1640	30	import java.io.PrintWriter;
vromero@1640	31	import java.io.StringWriter;
vromero@1640	32	import java.nio.file.Paths;
vromero@1640	33	import java.util.*;
vromero@1640	34
vromero@1640	35	public class MethodRefDupInConstantPoolTest {
vromero@1640	36
vromero@1640	37	private static final String methodToLookFor =
vromero@1640	38	"java/util/Vector.iterator:()Ljava/util/Iterator;";
vromero@1640	39
vromero@1640	40	public static void main(String[] args) {
vromero@1640	41	new MethodRefDupInConstantPoolTest().run();
vromero@1640	42	}
vromero@1640	43
vromero@1640	44	void run() {
vromero@1640	45	check("-v", Paths.get(System.getProperty("test.classes"),
vromero@1640	46	"TestHelper1.class").toString());
vromero@1640	47	check("-v", Paths.get(System.getProperty("test.classes"),
vromero@1640	48	"TestHelper2.class").toString());
vromero@1640	49	}
vromero@1640	50
vromero@1640	51	void check(String... params) {
vromero@1640	52	StringWriter s;
vromero@1640	53	String out;
vromero@1640	54	try (PrintWriter pw = new PrintWriter(s = new StringWriter())) {
vromero@1640	55	com.sun.tools.javap.Main.run(params, pw);
vromero@1640	56	out = s.toString();
vromero@1640	57	}
vromero@1640	58	String constantPool = getConstantPool(out);
vromero@1640	59	if (constantPool.indexOf(methodToLookFor) !=
vromero@1640	60	constantPool.lastIndexOf(methodToLookFor)) {
vromero@1640	61	throw new AssertionError("There is more than one entry for the method seek " +
vromero@1640	62	methodToLookFor);
vromero@1640	63	}
vromero@1640	64	}
vromero@1640	65
vromero@1640	66	String getConstantPool(String out) {
vromero@1640	67	int start = out.indexOf("Constant pool:");
vromero@1640	68	int end = out.indexOf("{");
vromero@1640	69	return out.substring(start, end);
vromero@1640	70	}
vromero@1640	71	}
vromero@1640	72
vromero@1640	73	class TestHelper1 {
vromero@1640	74	void m() {
vromero@1640	75	Vector v = new Vector();
vromero@1640	76	Iterator iter = v.iterator();
vromero@1640	77	while (iter.hasNext()) {
vromero@1640	78	Object o = iter.next();
vromero@1640	79	Object o2 = o;
vromero@1640	80	}
vromero@1640	81	for (Object o: v) {
vromero@1640	82	Object o2 = o;
vromero@1640	83	}
vromero@1640	84	}
vromero@1640	85	}
vromero@1640	86
vromero@1640	87	class TestHelper2<X extends Number & Iterable<String>> {
vromero@1640	88	void test(X x) {
vromero@1640	89	for (String s : x) { }
vromero@1640	90	}
vromero@1640	91	}