1 /*
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  3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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  7  * published by the Free Software Foundation.
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 10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 12  * version 2 for more details (a copy is included in the LICENSE file that
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 17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 18  *
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 24 
 25 /**
 26  * @test
 27  * @bug 8291360
 28  * @summary Test getting a class's raw access flags using java.lang.Class API
 29  * @modules java.base/java.lang:open
 30  * @compile classAccessFlagsRaw.jcod
 31  * @run main/othervm ClassAccessFlagsRawTest
 32  */
 33 
 34 import java.lang.reflect.*;
 35 import java.util.Set;
 36 
 37 public class ClassAccessFlagsRawTest {
 38 
 39     static Method m;
 40 
 41     public static void testIt(String className, int expectedResult) throws Exception {
 42         Class<?> testClass = Class.forName(className);
 43         int flags = (int)m.invoke(testClass);
 44         if (flags != expectedResult) {
 45             throw new RuntimeException(
 46                 "expected 0x" + Integer.toHexString(expectedResult) + ", got 0x" + Integer.toHexString(flags) + " for class " + className);
 47         }
 48     }
 49 
 50     public static void main(String argv[]) throws Throwable {
 51         Class<?> cl = java.lang.Class.class;
 52         m = cl.getDeclaredMethod("getClassFileAccessFlags", new Class[0]);
 53         m.setAccessible(true);
 54 
 55         testIt("SUPERset", 0x21);  // ACC_SUPER 0x20 + ACC_PUBLIC 0x1
 56         testIt("SUPERnotset", Modifier.PUBLIC);
 57 
 58         // Test that primitive should return ACC_ABSTRACT | ACC_FINAL | ACC_PUBLIC.
 59         int[] arr = new int[3];
 60         if (!arr.getClass().getComponentType().isPrimitive()) {
 61             throw new RuntimeException("not primitive");
 62         }
 63         int flags = (int)m.invoke(arr.getClass().getComponentType());
 64         if (flags != (Modifier.ABSTRACT | Modifier.FINAL | Modifier.PUBLIC)) {
 65             throw new RuntimeException(
 66                 "expected 0x411, got 0x" + Integer.toHexString(flags) + " for primitive type");
 67         }
 68 
 69         // Test that primitive array raw access flags return 0.
 70         flags = (int)m.invoke(arr.getClass());
 71         if (flags != 0) {
 72             throw new RuntimeException(
 73                 "expected 0x0 got 0x" + Integer.toHexString(flags) + " for primitive array");
 74         }
 75 
 76         // Test that the modifier flags return element type flags.
 77         flags = (int)arr.getClass().getModifiers();
 78         if (flags != (Modifier.ABSTRACT | Modifier.FINAL | Modifier.PUBLIC)) {
 79             throw new RuntimeException(
 80                 "expected 0x411, got 0x" + Integer.toHexString(flags) + " for primitive type");
 81         }
 82 
 83         // Test that AccessFlags set will return element type access flags.
 84         Set<AccessFlag> aacc = arr.getClass().accessFlags();
 85         if (!aacc.containsAll(Set.of(AccessFlag.FINAL, AccessFlag.ABSTRACT, AccessFlag.PUBLIC))) {
 86             throw new RuntimeException(
 87                 "AccessFlags should contain FINAL, ABSTRACT and PUBLIC for primitive type");
 88         }
 89 
 90         // Test object array.  Raw access flags are 0 for arrays.
 91         flags = (int)m.invoke((new SUPERnotset[2]).getClass());
 92         if (flags != 0) {
 93             throw new RuntimeException(
 94                 "expected 0x0, got 0x" + Integer.toHexString(flags) + " for object array");
 95         }
 96 
 97         // Test object array component type.
 98         flags = (int)m.invoke((new SUPERnotset[2]).getClass().getComponentType());
 99         if (flags != Modifier.PUBLIC) {
100             throw new RuntimeException(
101                 "expected 0x1, got 0x" + Integer.toHexString(flags) + " for object array");
102         }
103     }
104 }