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