mcimadamore@716: /*
ohair@962:  * Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
mcimadamore@716:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
mcimadamore@716:  *
mcimadamore@716:  * This code is free software; you can redistribute it and/or modify it
mcimadamore@716:  * under the terms of the GNU General Public License version 2 only, as
mcimadamore@716:  * published by the Free Software Foundation.
mcimadamore@716:  *
mcimadamore@716:  * This code is distributed in the hope that it will be useful, but WITHOUT
mcimadamore@716:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
mcimadamore@716:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
mcimadamore@716:  * version 2 for more details (a copy is included in the LICENSE file that
mcimadamore@716:  * accompanied this code).
mcimadamore@716:  *
mcimadamore@716:  * You should have received a copy of the GNU General Public License version
mcimadamore@716:  * 2 along with this work; if not, write to the Free Software Foundation,
mcimadamore@716:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
mcimadamore@716:  *
mcimadamore@716:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
mcimadamore@716:  * or visit www.oracle.com if you need additional information or have any
mcimadamore@716:  * questions.
mcimadamore@716:  */
mcimadamore@716: 
mcimadamore@716: /*
mcimadamore@716:  * @test
mcimadamore@716:  * @bug 6991980
mcimadamore@716:  * @summary  polymorphic signature calls don't share the same CP entries
mcimadamore@716:  * @run main TestCP
mcimadamore@716:  */
mcimadamore@716: 
mcimadamore@716: import com.sun.tools.classfile.Instruction;
mcimadamore@716: import com.sun.tools.classfile.Attribute;
mcimadamore@716: import com.sun.tools.classfile.ClassFile;
mcimadamore@716: import com.sun.tools.classfile.Code_attribute;
mcimadamore@716: import com.sun.tools.classfile.ConstantPool.*;
mcimadamore@716: import com.sun.tools.classfile.Method;
mcimadamore@716: 
ksrini@957: import java.lang.invoke.*;
mcimadamore@716: import java.io.*;
mcimadamore@716: 
mcimadamore@716: public class TestCP {
mcimadamore@716: 
mcimadamore@716:     static class TestClass {
mcimadamore@716:         void test(MethodHandle mh) throws Throwable {
mcimadamore@820:             Number n = (Number)mh.invokeExact("daddy",1,'n');
mcimadamore@716:             n = (Number)mh.invokeExact("bunny",1,'d');
mcimadamore@820:             n = (Number)(mh.invokeExact("foo",1,'d'));
mcimadamore@820:             n = (Number)((mh.invokeExact("bar",1,'d')));
mcimadamore@716:         }
mcimadamore@716:     }
mcimadamore@716: 
mcimadamore@716:     static final String PS_TYPE = "(Ljava/lang/String;IC)Ljava/lang/Number;";
mcimadamore@820:     static final int PS_CALLS_COUNT = 4;
mcimadamore@716:     static final String SUBTEST_NAME = TestClass.class.getName() + ".class";
mcimadamore@716:     static final String TEST_METHOD_NAME = "test";
mcimadamore@716: 
mcimadamore@716:     public static void main(String... args) throws Exception {
mcimadamore@716:         new TestCP().run();
mcimadamore@716:     }
mcimadamore@716: 
mcimadamore@716:     public void run() throws Exception {
mcimadamore@716:         String workDir = System.getProperty("test.classes");
mcimadamore@716:         File compiledTest = new File(workDir, SUBTEST_NAME);
mcimadamore@716:         verifyMethodHandleInvocationDescriptors(compiledTest);
mcimadamore@716:     }
mcimadamore@716: 
mcimadamore@716:     void verifyMethodHandleInvocationDescriptors(File f) {
mcimadamore@716:         System.err.println("verify: " + f);
mcimadamore@716:         try {
mcimadamore@716:             int count = 0;
mcimadamore@716:             ClassFile cf = ClassFile.read(f);
mcimadamore@716:             Method testMethod = null;
mcimadamore@716:             for (Method m : cf.methods) {
mcimadamore@716:                 if (m.getName(cf.constant_pool).equals(TEST_METHOD_NAME)) {
mcimadamore@716:                     testMethod = m;
mcimadamore@716:                     break;
mcimadamore@716:                 }
mcimadamore@716:             }
mcimadamore@716:             if (testMethod == null) {
mcimadamore@716:                 throw new Error("Test method not found");
mcimadamore@716:             }
mcimadamore@716:             Code_attribute ea = (Code_attribute)testMethod.attributes.get(Attribute.Code);
mcimadamore@716:             if (testMethod == null) {
mcimadamore@716:                 throw new Error("Code attribute for test() method not found");
mcimadamore@716:             }
mcimadamore@716:             int instr_count = 0;
mcimadamore@716:             int cp_entry = -1;
mcimadamore@716: 
mcimadamore@716:             for (Instruction i : ea.getInstructions()) {
mcimadamore@716:                 if (i.getMnemonic().equals("invokevirtual")) {
mcimadamore@716:                     instr_count++;
mcimadamore@716:                     if (cp_entry == -1) {
mcimadamore@716:                         cp_entry = i.getUnsignedShort(1);
mcimadamore@716:                     } else if (cp_entry != i.getUnsignedShort(1)) {
mcimadamore@716:                         throw new Error("Unexpected CP entry in polymorphic signature call");
mcimadamore@716:                     }
mcimadamore@716:                     CONSTANT_Methodref_info methRef =
mcimadamore@716:                             (CONSTANT_Methodref_info)cf.constant_pool.get(cp_entry);
mcimadamore@716:                     String type = methRef.getNameAndTypeInfo().getType();
mcimadamore@716:                     if (!type.equals(PS_TYPE)) {
mcimadamore@716:                         throw new Error("Unexpected type in polymorphic signature call: " + type);
mcimadamore@716:                     }
mcimadamore@716:                 }
mcimadamore@716:             }
mcimadamore@716:             if (instr_count != PS_CALLS_COUNT) {
mcimadamore@716:                 throw new Error("Wrong number of polymorphic signature call found: " + instr_count);
mcimadamore@716:             }
mcimadamore@716:         } catch (Exception e) {
mcimadamore@716:             e.printStackTrace();
mcimadamore@716:             throw new Error("error reading " + f +": " + e);
mcimadamore@716:         }
mcimadamore@716:     }
mcimadamore@716: }