104 lines
3.8 KiB
Java
104 lines
3.8 KiB
Java
/*
|
|
* Copyright (c) 2020, 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 8255757
|
|
* @summary Javac shouldn't emit duplicate pool entries on array::clone
|
|
* @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 T8255757
|
|
*/
|
|
|
|
import java.nio.file.Path;
|
|
|
|
import com.sun.tools.classfile.ClassFile;
|
|
import com.sun.tools.classfile.ConstantPool;
|
|
import com.sun.tools.classfile.ConstantPool.*;
|
|
|
|
import toolbox.JavacTask;
|
|
import toolbox.ToolBox;
|
|
import toolbox.TestRunner;
|
|
|
|
public class T8255757 extends TestRunner {
|
|
ToolBox tb;
|
|
|
|
T8255757() {
|
|
super(System.err);
|
|
tb = new ToolBox();
|
|
}
|
|
|
|
public static void main(String[] args) throws Exception {
|
|
T8255757 t = new T8255757();
|
|
t.runTests();
|
|
}
|
|
|
|
@Test
|
|
public void testDuplicatePoolEntries() throws Exception {
|
|
String code = """
|
|
public class Test {
|
|
void test(Object[] o) {
|
|
o.clone();
|
|
o.clone();
|
|
}
|
|
void test2(Object[] o) {
|
|
o.clone();
|
|
o.clone();
|
|
}
|
|
}""";
|
|
Path curPath = Path.of(".");
|
|
new JavacTask(tb)
|
|
.sources(code)
|
|
.outdir(curPath)
|
|
.run();
|
|
|
|
ClassFile cf = ClassFile.read(curPath.resolve("Test.class"));
|
|
ConstantPool cp = cf.constant_pool;
|
|
int num = 0;
|
|
for (CPInfo cpInfo : cp.entries()) {
|
|
if (cpInfo instanceof CONSTANT_Methodref_info) {
|
|
int class_index = ((CONSTANT_Methodref_info) cpInfo).class_index;
|
|
int name_and_type_index = ((CONSTANT_Methodref_info) cpInfo).name_and_type_index;
|
|
int class_name_index = ((CONSTANT_Class_info)
|
|
cp.getClassInfo(class_index)).name_index;
|
|
int method_name_index = ((CONSTANT_NameAndType_info)
|
|
cp.getNameAndTypeInfo(name_and_type_index)).name_index;
|
|
int method_type_name_index = ((CONSTANT_NameAndType_info)
|
|
cp.getNameAndTypeInfo(name_and_type_index)).type_index;
|
|
if ("[Ljava/lang/Object;".equals(cp.getUTF8Value(class_name_index)) &&
|
|
"clone".equals(cp.getUTF8Value(method_name_index)) &&
|
|
"()Ljava/lang/Object;".equals(cp.getUTF8Value(method_type_name_index))) {
|
|
++num;
|
|
}
|
|
}
|
|
}
|
|
if (num != 1) {
|
|
throw new AssertionError("The number of the pool entries on array::clone is not right. " +
|
|
"Expected number: 1, actual number: " + num);
|
|
}
|
|
}
|
|
}
|