author | alanb |
Thu, 01 Dec 2016 08:57:53 +0000 | |
changeset 42338 | a60f280f803c |
parent 40962 | 2c005ed3d294 |
child 44423 | 306c020eb154 |
permissions | -rw-r--r-- |
40962 | 1 |
/* |
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* Copyright (c) 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 6822627 |
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* @summary Test that ReferenceType.constantPool does not produce an NPE |
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* |
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* @author Egor Ushakov |
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* |
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42338
a60f280f803c
8169069: Module system implementation refresh (11/2016)
alanb
parents:
40962
diff
changeset
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* @modules jdk.jdi/com.sun.tools.jdi:+open |
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* @run build TestScaffold VMConnection |
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* @run compile -g ConstantPoolInfoGC.java |
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* @run main/othervm ConstantPoolInfoGC |
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*/ |
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import com.sun.jdi.ReferenceType; |
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import com.sun.tools.jdi.ReferenceTypeImpl; |
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import java.lang.ref.Reference; |
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import java.lang.reflect.Field; |
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import java.util.Arrays; |
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/********** target program **********/ |
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class ConstantPoolGCTarg { |
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public static void main(String[] args){ |
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System.out.println("Anything"); |
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} |
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} |
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/********** test program **********/ |
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public class ConstantPoolInfoGC extends TestScaffold { |
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ReferenceType targetClass; |
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ConstantPoolInfoGC(String args[]) { |
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super(args); |
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} |
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public static void main(String[] args) throws Exception { |
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new ConstantPoolInfoGC(args).startTests(); |
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} |
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/********** test core **********/ |
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protected void runTests() throws Exception { |
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targetClass = startToMain("ConstantPoolGCTarg").location().declaringType(); |
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if (vm().canGetConstantPool()) { |
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byte[] cpbytes = targetClass.constantPool(); |
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// imitate SoftReference cleared |
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Field constantPoolBytesRef = ReferenceTypeImpl.class.getDeclaredField("constantPoolBytesRef"); |
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constantPoolBytesRef.setAccessible(true); |
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Reference softRef = (Reference) constantPoolBytesRef.get(targetClass); |
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softRef.clear(); |
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byte[] cpbytes2 = targetClass.constantPool(); |
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if (!Arrays.equals(cpbytes, cpbytes2)) { |
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failure("Consequent constantPool results vary, first was : " + cpbytes + ", now: " + cpbytes2); |
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}; |
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} else { |
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System.out.println("can get constant pool version not supported"); |
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} |
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/* |
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* resume until end |
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*/ |
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listenUntilVMDisconnect(); |
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/* |
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* deal with results of test |
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* if anything has called failure("foo") testFailed will be true |
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*/ |
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if (!testFailed) { |
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println("ConstantPoolInfoGC: passed"); |
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} else { |
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throw new Exception("ConstantPoolInfoGC: failed"); |
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} |
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} |
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} |