1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/tools/javac/meth/TestCP.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,113 @@
1.4 +/*
1.5 + * Copyright (c) 2010, 2011, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation.
1.11 + *
1.12 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.13 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.14 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.15 + * version 2 for more details (a copy is included in the LICENSE file that
1.16 + * accompanied this code).
1.17 + *
1.18 + * You should have received a copy of the GNU General Public License version
1.19 + * 2 along with this work; if not, write to the Free Software Foundation,
1.20 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.21 + *
1.22 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.23 + * or visit www.oracle.com if you need additional information or have any
1.24 + * questions.
1.25 + */
1.26 +
1.27 +/*
1.28 + * @test
1.29 + * @bug 6991980
1.30 + * @summary polymorphic signature calls don't share the same CP entries
1.31 + * @run main TestCP
1.32 + */
1.33 +
1.34 +import com.sun.tools.classfile.Instruction;
1.35 +import com.sun.tools.classfile.Attribute;
1.36 +import com.sun.tools.classfile.ClassFile;
1.37 +import com.sun.tools.classfile.Code_attribute;
1.38 +import com.sun.tools.classfile.ConstantPool.*;
1.39 +import com.sun.tools.classfile.Method;
1.40 +
1.41 +import java.lang.invoke.*;
1.42 +import java.io.*;
1.43 +
1.44 +public class TestCP {
1.45 +
1.46 + static class TestClass {
1.47 + void test(MethodHandle mh) throws Throwable {
1.48 + Number n = (Number)mh.invokeExact("daddy",1,'n');
1.49 + n = (Number)mh.invokeExact("bunny",1,'d');
1.50 + n = (Number)(mh.invokeExact("foo",1,'d'));
1.51 + n = (Number)((mh.invokeExact("bar",1,'d')));
1.52 + }
1.53 + }
1.54 +
1.55 + static final String PS_TYPE = "(Ljava/lang/String;IC)Ljava/lang/Number;";
1.56 + static final int PS_CALLS_COUNT = 4;
1.57 + static final String SUBTEST_NAME = TestClass.class.getName() + ".class";
1.58 + static final String TEST_METHOD_NAME = "test";
1.59 +
1.60 + public static void main(String... args) throws Exception {
1.61 + new TestCP().run();
1.62 + }
1.63 +
1.64 + public void run() throws Exception {
1.65 + String workDir = System.getProperty("test.classes");
1.66 + File compiledTest = new File(workDir, SUBTEST_NAME);
1.67 + verifyMethodHandleInvocationDescriptors(compiledTest);
1.68 + }
1.69 +
1.70 + void verifyMethodHandleInvocationDescriptors(File f) {
1.71 + System.err.println("verify: " + f);
1.72 + try {
1.73 + int count = 0;
1.74 + ClassFile cf = ClassFile.read(f);
1.75 + Method testMethod = null;
1.76 + for (Method m : cf.methods) {
1.77 + if (m.getName(cf.constant_pool).equals(TEST_METHOD_NAME)) {
1.78 + testMethod = m;
1.79 + break;
1.80 + }
1.81 + }
1.82 + if (testMethod == null) {
1.83 + throw new Error("Test method not found");
1.84 + }
1.85 + Code_attribute ea = (Code_attribute)testMethod.attributes.get(Attribute.Code);
1.86 + if (testMethod == null) {
1.87 + throw new Error("Code attribute for test() method not found");
1.88 + }
1.89 + int instr_count = 0;
1.90 + int cp_entry = -1;
1.91 +
1.92 + for (Instruction i : ea.getInstructions()) {
1.93 + if (i.getMnemonic().equals("invokevirtual")) {
1.94 + instr_count++;
1.95 + if (cp_entry == -1) {
1.96 + cp_entry = i.getUnsignedShort(1);
1.97 + } else if (cp_entry != i.getUnsignedShort(1)) {
1.98 + throw new Error("Unexpected CP entry in polymorphic signature call");
1.99 + }
1.100 + CONSTANT_Methodref_info methRef =
1.101 + (CONSTANT_Methodref_info)cf.constant_pool.get(cp_entry);
1.102 + String type = methRef.getNameAndTypeInfo().getType();
1.103 + if (!type.equals(PS_TYPE)) {
1.104 + throw new Error("Unexpected type in polymorphic signature call: " + type);
1.105 + }
1.106 + }
1.107 + }
1.108 + if (instr_count != PS_CALLS_COUNT) {
1.109 + throw new Error("Wrong number of polymorphic signature call found: " + instr_count);
1.110 + }
1.111 + } catch (Exception e) {
1.112 + e.printStackTrace();
1.113 + throw new Error("error reading " + f +": " + e);
1.114 + }
1.115 + }
1.116 +}
