66 lines
2.4 KiB
Java
66 lines
2.4 KiB
Java
/*
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* Copyright (c) 2013, 2015, 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 8009170
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* @summary Regression: javac generates redundant bytecode in assignop involving
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* arrays
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* @enablePreview
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* @run main RedundantByteCodeInArrayTest
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*/
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import java.lang.classfile.*;
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import java.lang.classfile.attribute.CodeAttribute;
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import java.lang.classfile.constantpool.ConstantPool;
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import java.io.File;
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import java.io.IOException;
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public class RedundantByteCodeInArrayTest {
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public static void main(String[] args)
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throws IOException {
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new RedundantByteCodeInArrayTest()
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.checkClassFile(new File(System.getProperty("test.classes", "."),
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RedundantByteCodeInArrayTest.class.getName() + ".class"));
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}
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void arrMethod(int[] array, int p, int inc) {
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array[p] += inc;
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}
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void checkClassFile(File file)
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throws IOException {
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ClassModel classFile = ClassFile.of().parse(file.toPath());
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ConstantPool constantPool = classFile.constantPool();
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//lets get all the methods in the class file.
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for (MethodModel method : classFile.methods()) {
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if (method.methodName().equalsString("arrMethod")) {
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CodeAttribute code = method.findAttribute(Attributes.code()).orElse(null);
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assert code != null;
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if (code.maxLocals() > 4)
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throw new AssertionError("Too many locals for method arrMethod");
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}
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}
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}
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} |