98 lines
3.3 KiB
Java
98 lines
3.3 KiB
Java
/*
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* Copyright (c) 2020, 2021, 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 8255757
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* @summary Javac shouldn't emit duplicate pool entries on array::clone
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* @library /tools/lib
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* @enablePreview
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* @modules jdk.compiler/com.sun.tools.javac.api
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* jdk.compiler/com.sun.tools.javac.main
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* java.base/jdk.internal.classfile.impl
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* @build toolbox.ToolBox toolbox.JavacTask
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* @run main T8255757
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*/
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import java.nio.file.Path;
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import java.lang.classfile.*;
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import java.lang.classfile.constantpool.*;
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import toolbox.JavacTask;
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import toolbox.ToolBox;
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import toolbox.TestRunner;
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public class T8255757 extends TestRunner {
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ToolBox tb;
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T8255757() {
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super(System.err);
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tb = new ToolBox();
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}
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public static void main(String[] args) throws Exception {
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T8255757 t = new T8255757();
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t.runTests();
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}
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@Test
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public void testDuplicatePoolEntries() throws Exception {
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String code = """
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public class Test {
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void test(Object[] o) {
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o.clone();
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o.clone();
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}
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void test2(Object[] o) {
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o.clone();
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o.clone();
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}
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}""";
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Path curPath = Path.of(".");
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new JavacTask(tb)
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.sources(code)
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.outdir(curPath)
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.run();
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ClassModel cf = ClassFile.of().parse(curPath.resolve("Test.class"));
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int num = 0;
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for (PoolEntry pe : cf.constantPool()) {
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if (pe instanceof MethodRefEntry methodRefEntry) {
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String class_name = methodRefEntry.owner().asInternalName();
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String method_name = methodRefEntry.name().stringValue();
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String method_type = methodRefEntry.type().stringValue();
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if ("[Ljava/lang/Object;".equals(class_name) &&
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"clone".equals(method_name) &&
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"()Ljava/lang/Object;".equals(method_type)) {
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++num;
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}
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}
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}
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if (num != 1) {
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throw new AssertionError("The number of the pool entries on array::clone is not right. " +
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"Expected number: 1, actual number: " + num);
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}
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}
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}
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