114 lines
4.3 KiB
Java
114 lines
4.3 KiB
Java
/*
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* Copyright (c) 2010, 2011, 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 6991980
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* @summary polymorphic signature calls don't share the same CP entries
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* @run main TestCP
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*/
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import com.sun.tools.classfile.Instruction;
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import com.sun.tools.classfile.Attribute;
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import com.sun.tools.classfile.ClassFile;
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import com.sun.tools.classfile.Code_attribute;
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import com.sun.tools.classfile.ConstantPool.*;
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import com.sun.tools.classfile.Method;
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import java.lang.invoke.*;
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import java.io.*;
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public class TestCP {
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static class TestClass {
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void test(MethodHandle mh) throws Throwable {
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Number n = (Number)mh.invokeExact("daddy",1,'n');
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n = (Number)mh.invokeExact("bunny",1,'d');
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n = (Number)(mh.invokeExact("foo",1,'d'));
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n = (Number)((mh.invokeExact("bar",1,'d')));
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}
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}
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static final String PS_TYPE = "(Ljava/lang/String;IC)Ljava/lang/Number;";
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static final int PS_CALLS_COUNT = 4;
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static final String SUBTEST_NAME = TestClass.class.getName() + ".class";
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static final String TEST_METHOD_NAME = "test";
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public static void main(String... args) throws Exception {
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new TestCP().run();
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}
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public void run() throws Exception {
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String workDir = System.getProperty("test.classes");
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File compiledTest = new File(workDir, SUBTEST_NAME);
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verifyMethodHandleInvocationDescriptors(compiledTest);
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}
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void verifyMethodHandleInvocationDescriptors(File f) {
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System.err.println("verify: " + f);
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try {
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int count = 0;
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ClassFile cf = ClassFile.read(f);
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Method testMethod = null;
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for (Method m : cf.methods) {
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if (m.getName(cf.constant_pool).equals(TEST_METHOD_NAME)) {
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testMethod = m;
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break;
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}
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}
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if (testMethod == null) {
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throw new Error("Test method not found");
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}
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Code_attribute ea = (Code_attribute)testMethod.attributes.get(Attribute.Code);
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if (testMethod == null) {
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throw new Error("Code attribute for test() method not found");
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}
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int instr_count = 0;
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int cp_entry = -1;
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for (Instruction i : ea.getInstructions()) {
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if (i.getMnemonic().equals("invokevirtual")) {
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instr_count++;
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if (cp_entry == -1) {
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cp_entry = i.getUnsignedShort(1);
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} else if (cp_entry != i.getUnsignedShort(1)) {
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throw new Error("Unexpected CP entry in polymorphic signature call");
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}
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CONSTANT_Methodref_info methRef =
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(CONSTANT_Methodref_info)cf.constant_pool.get(cp_entry);
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String type = methRef.getNameAndTypeInfo().getType();
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if (!type.equals(PS_TYPE)) {
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throw new Error("Unexpected type in polymorphic signature call: " + type);
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}
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}
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}
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if (instr_count != PS_CALLS_COUNT) {
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throw new Error("Wrong number of polymorphic signature call found: " + instr_count);
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}
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} catch (Exception e) {
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e.printStackTrace();
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throw new Error("error reading " + f +": " + e);
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}
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}
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}
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