/*
* Copyright (c) 2013, 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
*
* @modules java.base/jdk.internal.org.objectweb.asm:+open java.base/jdk.internal.org.objectweb.asm.util:+open
* @library /vmTestbase /test/lib
*
* @comment build retransform.jar in current dir
* @run driver vm.runtime.defmeth.shared.BuildJar
*
* @run driver jdk.test.lib.FileInstaller . .
* @run main/othervm/native
* -agentlib:redefineClasses
* -javaagent:retransform.jar
* vm.runtime.defmeth.AccessibilityFlagsTest
*/
package vm.runtime.defmeth;
import java.util.Set;
import vm.runtime.defmeth.shared.DefMethTest;
import vm.runtime.defmeth.shared.data.*;
import vm.runtime.defmeth.shared.data.method.body.EmptyBody;
import vm.runtime.defmeth.shared.builder.TestBuilder;
import static jdk.internal.org.objectweb.asm.Opcodes.*;
import static vm.runtime.defmeth.shared.ExecutionMode.*;
/*
* Test allowed combinations of access flags on methods in interfaces.
* Based on assertions from JVMS.
*/
public class AccessibilityFlagsTest extends DefMethTest {
public static void main(String[] args) {
DefMethTest.runTest(AccessibilityFlagsTest.class,
/* majorVer */ Set.of(MAX_MAJOR_VER),
/* flags */ Set.of(0, ACC_SYNCHRONIZED),
/* redefine */ Set.of(false, true),
/* execMode */ Set.of(DIRECT, REFLECTION, INVOKE_EXACT, INVOKE_GENERIC, INVOKE_WITH_ARGS, INDY));
}
/* ====================================================================== */
// Methods of interfaces may set any of the flags in Table 4.5 except
// ACC_PROTECTED, ACC_FINAL, ACC_NATIVE, and ACC_SYNCHRONIZED (9.4);
/**
* interface I { protected void m(); }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
*/
public void testProtectedMethodAbstract() {
expectClassFormatError(
createAbstractMethodInterface(ACC_PROTECTED));
expectClassFormatError(
createAbstractMethodInterface(ACC_PROTECTED | ACC_PUBLIC));
expectClassFormatError(
createAbstractMethodInterface(ACC_PROTECTED | ACC_PRIVATE));
}
/**
* interface I { protected void m() default {}; }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
*/
public void testProtectedMethodDefault() {
expectClassFormatError(
createDefaultMethodInterface(ACC_PROTECTED));
expectClassFormatError(
createDefaultMethodInterface(ACC_PROTECTED | ACC_PUBLIC));
expectClassFormatError(
createDefaultMethodInterface(ACC_PROTECTED | ACC_PRIVATE));
}
/**
* interface I { final void m() default {}; }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
*/
public void testFinalMethodDefault() {
expectClassFormatError(
createDefaultMethodInterface(ACC_FINAL));
expectClassFormatError(
createDefaultMethodInterface(ACC_FINAL | ACC_PUBLIC));
expectClassFormatError(
createDefaultMethodInterface(ACC_FINAL | ACC_PRIVATE));
}
/**
* interface I { native void m() default {}; }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
*/
public void testNativeMethodDefault() {
expectClassFormatError(
createDefaultMethodInterface(ACC_NATIVE));
expectClassFormatError(
createDefaultMethodInterface(ACC_NATIVE | ACC_PUBLIC));
expectClassFormatError(
createDefaultMethodInterface(ACC_NATIVE | ACC_PRIVATE));
}
/**
* interface I { synchronized void m(); }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
*/
public void testSynchronizedMethodAbstract() {
expectClassFormatError(
createAbstractMethodInterface(ACC_SYNCHRONIZED));
expectClassFormatError(
createAbstractMethodInterface(ACC_SYNCHRONIZED | ACC_PUBLIC));
expectClassFormatError(
createAbstractMethodInterface(ACC_SYNCHRONIZED | ACC_PRIVATE));
}
/**
* interface I { synchronized void m() default {}; }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
*/
public void testSynchronizedMethodDefault() {
expectClassFormatError(
createDefaultMethodInterface(ACC_SYNCHRONIZED));
expectClassFormatError(
createDefaultMethodInterface(ACC_SYNCHRONIZED | ACC_PUBLIC));
expectClassFormatError(
createDefaultMethodInterface(ACC_SYNCHRONIZED | ACC_PRIVATE));
}
/* ===================================================================== */
// [methods of interfaces] must have exactly one of the ACC_PUBLIC or ACC_PRIVATE flags set.
/**
* interface I { private void m() default {}; }
*
* TEST: ClassLoader.loadClass("I") == succeeds
*/
public void testPrivateMethodDefault() {
loadClass(
createDefaultMethodInterface(ACC_PRIVATE));
}
/**
* interface I { public void m(); }
*
* TEST: ClassLoader.loadClass("I") == succeeds
*/
public void testPublicMethodAbstract() {
loadClass(
createAbstractMethodInterface(ACC_PUBLIC));
}
/**
* interface I { public void m() default {}; }
*
*/
public void testPublicMethodDefault() {
loadClass(
createDefaultMethodInterface(ACC_PUBLIC));
}
/**
* interface I { private public void m(); }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
*/
public void testPrivatePublicMethodAbstract() {
expectClassFormatError(
createAbstractMethodInterface(ACC_PUBLIC | ACC_PRIVATE));
}
/**
* interface I { private public void m() default {}; }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
*/
public void testPrivatePublicMethodDefault() {
expectClassFormatError(
createDefaultMethodInterface(ACC_PUBLIC | ACC_PRIVATE));
}
/* ===================================================================== */
// Methods of classes may set any of the flags in Table 4.5 except
// ACC_PROTECTED, ACC_FINAL, ACC_NATIVE, and ACC_SYNCHRONIZED (9.4);
// they must have exactly one of the ACC_PUBLIC or ACC_PRIVATE flags set.
//
// The following flags are allowed:
// ACC_PUBLIC 0x0001 Declared public; may be accessed from outside its package.
// ACC_PRIVATE 0x0002 Declared private; accessible only within the defining class.
// ACC_STATIC 0x0008 Declared static.
// ACC_BRIDGE 0x0040 A bridge method, generated by the compiler.
// ACC_VARARGS 0x0080 Declared with variable number of arguments.
// ACC_SYNTHETIC 0x1000 Declared synthetic; not present in the source code.
/**
* interface I { static void m() default {}; }
*
* TEST: ClassLoader.loadClass("I") == succeeds
*/
public void testStaticMethodDefault() {
loadClass(
createDefaultMethodInterface(ACC_STATIC | ACC_PUBLIC));
loadClass(
createDefaultMethodInterface(ACC_STATIC | ACC_PRIVATE));
}
/* =============================================================================== */
// If a specific method of a class or interface has its ACC_ABSTRACT flag set,
// it must not have any of its ACC_FINAL, ACC_NATIVE, ACC_PRIVATE, ACC_STATIC,
// or ACC_SYNCHRONIZED flags set (8.4.3.1, 8.4.3.3, 8.4.3.4).
/**
* interface I { final void m(); }
* abstract class C { abstract final void m(); }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
* TEST: ClassLoader.loadClass("C") ==> ClassFormatError
*/
public void testFinalMethodAbstract() {
/* interface I */
expectClassFormatError(
createAbstractMethodInterface(ACC_FINAL));
expectClassFormatError(
createAbstractMethodInterface(ACC_FINAL | ACC_PUBLIC));
/* abstract class C */
expectClassFormatError(
createAbstractMethodClass(ACC_FINAL));
}
/**
* interface I { native void m(); }
* interface K { native void m() default {}; }
* abstract class C { abstract native m(); }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
* TEST: ClassLoader.loadClass("K") ==> ClassFormatError
* TEST: ClassLoader.loadClass("C") ==> ClassFormatError
*/
public void testNativeMethodAbstract() {
/* interface I */
expectClassFormatError(
createDefaultMethodInterface(ACC_NATIVE));
expectClassFormatError(
createDefaultMethodInterface(ACC_NATIVE | ACC_PUBLIC));
/* interface K */
expectClassFormatError(
createAbstractMethodInterface(ACC_NATIVE));
expectClassFormatError(
createAbstractMethodInterface(ACC_NATIVE | ACC_PUBLIC));
/* abstract class C */
expectClassFormatError(
createAbstractMethodClass(ACC_NATIVE));
}
/**
* interface I { private void m(); }
* abstract class C { abstract private void m(); }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
* TEST: ClassLoader.loadClass("C") ==> ClassFormatError
*/
public void testPrivateMethodAbstract() {
/* interface I */
expectClassFormatError(
createAbstractMethodInterface(ACC_PRIVATE));
/* abstract class C */
expectClassFormatError(
createAbstractMethodClass(ACC_PRIVATE));
}
/**
* interface I { static void m(); }
* abstract class C { abstract static void m(); }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
* TEST: ClassLoader.loadClass("C") ==> ClassFormatError
*/
public void testStaticMethodAbstract() {
/* interface I */
expectClassFormatError(
createAbstractMethodInterface(ACC_STATIC));
expectClassFormatError(
createAbstractMethodInterface(ACC_STATIC | ACC_PUBLIC));
/* abstract class C */
expectClassFormatError(
createAbstractMethodClass(ACC_STATIC));
}
/* =============================================================================== */
/**
* interface I { abstract void m() default {}; }
*
* TEST: ClassLoader.loadClass("I") ==> ClassFormatError
*/
public void testAbstractMethodDefault() {
expectClassFormatError(
createDefaultMethodInterface(ACC_ABSTRACT));
}
/* ====================================================================== */
// Helper methods
private Interface createAbstractMethodInterface(int acc) {
return factory.getBuilder()
.intf("I")
.abstractMethod("m", "()V").flags(acc)
.build()
.build();
}
private Clazz createAbstractMethodClass(int acc) {
return factory.getBuilder()
.clazz("I")
.abstractMethod("m", "()V").flags(acc)
.build()
.build();
}
private Interface createDefaultMethodInterface(int acc) {
return factory.getBuilder()
.intf("I")
.defaultMethod("m", "()V").flags(acc)
.body(new EmptyBody())
.build()
.build();
}
private void expectException(Clazz clz, Class<? extends Throwable> exc) {
TestBuilder b = factory.getBuilder()
.register(clz);
b.test().loadClass(clz).throws_(exc).done()
.run();
}
private void loadClass(Clazz clz) {
TestBuilder b = factory.getBuilder()
.register(clz);
b.test().loadClass(clz).ignoreResult().done()
.run();
}
private void expectClassFormatError(Clazz clz) {
expectException(clz, ClassFormatError.class);
}
}