109 lines
4.1 KiB
Java
109 lines
4.1 KiB
Java
|
/*
|
||
|
|
* Copyright (c) 2021, 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 8263642
|
||
|
|
* @summary javac should not emit duplicate checkcast for first bound of intersection type in cast
|
||
|
|
* @library /tools/lib
|
||
|
|
* @modules jdk.compiler/com.sun.tools.javac.api
|
||
|
|
* jdk.compiler/com.sun.tools.javac.main
|
||
|
|
* jdk.jdeps/com.sun.tools.classfile
|
||
|
|
* @build toolbox.ToolBox toolbox.JavacTask
|
||
|
|
* @run main DuplicatedCheckcastTest
|
||
|
|
*/
|
||
|
|
|
||
|
|
import java.nio.file.Path;
|
||
|
|
import java.util.ArrayList;
|
||
|
|
|
||
|
|
import com.sun.tools.classfile.ClassFile;
|
||
|
|
import com.sun.tools.classfile.Method;
|
||
|
|
import com.sun.tools.classfile.Attribute;
|
||
|
|
import com.sun.tools.classfile.Code_attribute;
|
||
|
|
import com.sun.tools.classfile.Instruction;
|
||
|
|
import com.sun.tools.classfile.ConstantPool.CONSTANT_Class_info;
|
||
|
|
|
||
|
|
import toolbox.JavacTask;
|
||
|
|
import toolbox.TestRunner;
|
||
|
|
import toolbox.ToolBox;
|
||
|
|
|
||
|
|
public class DuplicatedCheckcastTest extends TestRunner {
|
||
|
|
ToolBox tb;
|
||
|
|
ClassFile cf;
|
||
|
|
|
||
|
|
public DuplicatedCheckcastTest() {
|
||
|
|
super(System.err);
|
||
|
|
tb = new ToolBox();
|
||
|
|
}
|
||
|
|
|
||
|
|
public static void main(String[] args) throws Exception {
|
||
|
|
DuplicatedCheckcastTest t = new DuplicatedCheckcastTest();
|
||
|
|
t.runTests();
|
||
|
|
}
|
||
|
|
|
||
|
|
@Test
|
||
|
|
public void testDuplicatedCheckcast() throws Exception {
|
||
|
|
String code = """
|
||
|
|
class IntersectionTypeTest {
|
||
|
|
interface I1 { }
|
||
|
|
static class C1 { }
|
||
|
|
static Object test(Object o) {
|
||
|
|
return (C1 & I1) o;
|
||
|
|
}
|
||
|
|
}""";
|
||
|
|
Path curPath = Path.of(".");
|
||
|
|
new JavacTask(tb)
|
||
|
|
.sources(code)
|
||
|
|
.outdir(curPath)
|
||
|
|
.run();
|
||
|
|
cf = ClassFile.read(curPath.resolve("IntersectionTypeTest.class"));
|
||
|
|
ArrayList<Instruction> checkCastList = new ArrayList<>();
|
||
|
|
for (Method method : cf.methods) {
|
||
|
|
if ("test".equals(method.getName(cf.constant_pool))) {
|
||
|
|
Code_attribute code_attribute = (Code_attribute) method.attributes.get(Attribute.Code);
|
||
|
|
for (Instruction instruction : code_attribute.getInstructions()) {
|
||
|
|
if ("checkcast".equals(instruction.getMnemonic())) {
|
||
|
|
checkCastList.add(instruction);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (checkCastList.size() != 2) {
|
||
|
|
throw new AssertionError("The number of the instruction 'checkcast' is not right. " +
|
||
|
|
"Expected number: 2, actual number: " + checkCastList.size());
|
||
|
|
}
|
||
|
|
checkClassName(checkCastList.get(0), "IntersectionTypeTest$I1");
|
||
|
|
checkClassName(checkCastList.get(1), "IntersectionTypeTest$C1");
|
||
|
|
}
|
||
|
|
|
||
|
|
public void checkClassName(Instruction ins, String expected) throws Exception {
|
||
|
|
int classIndex = ins.getUnsignedShort(1);
|
||
|
|
CONSTANT_Class_info classInfo = cf.constant_pool.getClassInfo(classIndex);
|
||
|
|
String className = classInfo.getName();
|
||
|
|
if (!expected.equals(className)) {
|
||
|
|
throw new AssertionError("The type of the 'checkcast' is not right. Expected: " +
|
||
|
|
expected + ", actual: " + className);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|