113 lines
3.8 KiB
Java
113 lines
3.8 KiB
Java
/*
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* Copyright (c) 2013, 2016, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 5053846 8011432
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* @summary javac: MethodRef entries are duplicated in the constant pool
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* @summary javac, compiler regression iterable + captured type
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* @modules jdk.compiler
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* jdk.jdeps/com.sun.tools.javap
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*/
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import java.io.PrintWriter;
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import java.io.StringWriter;
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import java.nio.file.Paths;
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import java.util.*;
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public class MethodRefDupInConstantPoolTest {
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private static final String methodToLookFor =
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"java/util/Vector.iterator:()Ljava/util/Iterator;";
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public static void main(String[] args) {
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new MethodRefDupInConstantPoolTest().run();
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}
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void run() {
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check("-v", Paths.get(System.getProperty("test.classes"),
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this.getClass().getSimpleName() + "$TestHelper1.class").toString());
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check("-v", Paths.get(System.getProperty("test.classes"),
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this.getClass().getSimpleName() + "$TestHelper2.class").toString());
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check("-v", Paths.get(System.getProperty("test.classes"),
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this.getClass().getSimpleName() + "$TestHelper3.class").toString());
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check("-v", Paths.get(System.getProperty("test.classes"),
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this.getClass().getSimpleName() + "$TestHelper4.class").toString());
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}
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void check(String... params) {
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StringWriter s;
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String out;
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try (PrintWriter pw = new PrintWriter(s = new StringWriter())) {
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com.sun.tools.javap.Main.run(params, pw);
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out = s.toString();
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}
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String constantPool = getConstantPool(out);
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if (constantPool.indexOf(methodToLookFor) !=
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constantPool.lastIndexOf(methodToLookFor)) {
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throw new AssertionError("There is more than one entry for the method seek " +
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methodToLookFor);
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}
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}
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String getConstantPool(String out) {
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int start = out.indexOf("Constant pool:");
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int end = out.indexOf("{");
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return out.substring(start, end);
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}
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class TestHelper1 {
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void m() {
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Vector v = new Vector();
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Iterator iter = v.iterator();
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while (iter.hasNext()) {
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Object o = iter.next();
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Object o2 = o;
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}
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for (Object o: v) {
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Object o2 = o;
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}
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}
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}
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class TestHelper2<X extends Number & Iterable<String>> {
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void test(X x) {
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for (String s : x) { }
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}
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}
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interface Data extends Iterable<String> {}
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class TestHelper3<X extends Number & Iterable<? extends Data>> {
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void test(X x) {
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for (Data s : x) { }
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}
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}
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class TestHelper4 {
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void test(Iterable<? extends Data> t) {
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for(Object a: t.iterator().next());
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}
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}
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}
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