Mercurial > jdk8-mips64-public > langtools / file comparison
comparison: test/tools/javac/8009170/RedundantByteCodeInArrayTest.java
test/tools/javac/8009170/RedundantByteCodeInArrayTest.java
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| 1 /* | |
| 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. | |
| 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
| 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| 20 * or visit www.oracle.com if you need additional information or have any | |
| 21 * questions. | |
| 22 */ | |
| 23 | |
| 24 /* | |
| 25 * @test | |
| 26 * @bug 8009170 | |
| 27 * @summary Regression: javac generates redundant bytecode in assignop involving | |
| 28 * arrays | |
| 29 * @run main RedundantByteCodeInArrayTest | |
| 30 */ | |
| 31 | |
| 32 import java.io.File; | |
| 33 import java.io.IOException; | |
| 34 | |
| 35 import com.sun.tools.classfile.Attribute; | |
| 36 import com.sun.tools.classfile.ClassFile; | |
| 37 import com.sun.tools.classfile.Code_attribute; | |
| 38 import com.sun.tools.classfile.Code_attribute.InvalidIndex; | |
| 39 import com.sun.tools.classfile.ConstantPool; | |
| 40 import com.sun.tools.classfile.ConstantPoolException; | |
| 41 import com.sun.tools.classfile.Descriptor.InvalidDescriptor; | |
| 42 import com.sun.tools.classfile.Method; | |
| 43 | |
| 44 public class RedundantByteCodeInArrayTest { | |
| 45 public static void main(String[] args) | |
| 46 throws IOException, ConstantPoolException, InvalidDescriptor, InvalidIndex { | |
| 47 new RedundantByteCodeInArrayTest() | |
| 48 .checkClassFile(new File(System.getProperty("test.classes", "."), | |
| 49 RedundantByteCodeInArrayTest.class.getName() + ".class")); | |
| 50 } | |
| 51 | |
| 52 void arrMethod(int[] array, int p, int inc) { | |
| 53 array[p] += inc; | |
| 54 } | |
| 55 | |
| 56 void checkClassFile(File file) | |
| 57 throws IOException, ConstantPoolException, InvalidDescriptor, InvalidIndex { | |
| 58 ClassFile classFile = ClassFile.read(file); | |
| 59 ConstantPool constantPool = classFile.constant_pool; | |
| 60 | |
| 61 //lets get all the methods in the class file. | |
| 62 for (Method method : classFile.methods) { | |
| 63 if (method.getName(constantPool).equals("arrMethod")) { | |
| 64 Code_attribute code = (Code_attribute) method.attributes | |
| 65 .get(Attribute.Code); | |
| 66 if (code.max_locals > 4) | |
| 67 throw new AssertionError("Too many locals for method arrMethod"); | |
| 68 } | |
| 69 } | |
| 70 } | |
| 71 } |
