1 /* 2 * Copyright (c) 2021, Alibaba Group Holding Limited. All Rights Reserved. 3 * Copyright (c) 2026, Oracle and/or its affiliates. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26 /* 27 * @test 28 * @author Yi Yang 29 * @summary Canonicalizes Foo.class.getModifiers() with interpreter mode 30 * @modules java.base/jdk.internal.misc 31 * @library /test/lib 32 * @enablePreview 33 * @run main/othervm -Xint 34 * -XX:CompileCommand=compileonly,*CanonicalizeGetModifiers.test 35 * compiler.c1.CanonicalizeGetModifiers 36 */ 37 38 /* 39 * @test 40 * @author Yi Yang 41 * @summary Canonicalizes Foo.class.getModifiers() with C1 mode 42 * @modules java.base/jdk.internal.misc 43 * @requires vm.compiler1.enabled 44 * @library /test/lib 45 * @enablePreview 46 * @run main/othervm -XX:TieredStopAtLevel=1 -XX:+TieredCompilation 47 * -XX:CompileCommand=compileonly,*CanonicalizeGetModifiers.test 48 * compiler.c1.CanonicalizeGetModifiers 49 */ 50 51 /* 52 * @test 53 * @author Yi Yang 54 * @summary Canonicalizes Foo.class.getModifiers() with C2 mode 55 * @modules java.base/jdk.internal.misc 56 * @requires vm.compiler2.enabled 57 * @library /test/lib 58 * @enablePreview 59 * @run main/othervm -XX:-TieredCompilation 60 * -XX:CompileCommand=compileonly,*CanonicalizeGetModifiers.test 61 * compiler.c1.CanonicalizeGetModifiers 62 */ 63 64 package compiler.c1; 65 66 import java.lang.classfile.ClassFile; 67 import java.lang.reflect.Modifier; 68 import java.lang.reflect.AccessFlag; 69 70 import jdk.test.lib.Asserts; 71 import jdk.internal.misc.PreviewFeatures; 72 73 public class CanonicalizeGetModifiers { 74 public static class T1 { 75 } 76 77 public static final class T2 { 78 } 79 80 private static class T3 { 81 } 82 83 protected static class T4 { 84 } 85 86 class T5 { 87 } 88 89 interface T6 { 90 } 91 92 static void test(Class poison) { 93 Asserts.assertEQ(CanonicalizeGetModifiers.class.getModifiers(), Modifier.PUBLIC | ClassFile.ACC_IDENTITY); 94 Asserts.assertEQ(T1.class.getModifiers(), Modifier.PUBLIC | Modifier.STATIC | ClassFile.ACC_IDENTITY); 95 Asserts.assertEQ(T2.class.getModifiers(), Modifier.PUBLIC | Modifier.FINAL | Modifier.STATIC | ClassFile.ACC_IDENTITY); 96 Asserts.assertEQ(T3.class.getModifiers(), Modifier.PRIVATE | Modifier.STATIC | ClassFile.ACC_IDENTITY); 97 Asserts.assertEQ(T4.class.getModifiers(), Modifier.PROTECTED | Modifier.STATIC | ClassFile.ACC_IDENTITY); 98 Asserts.assertEQ(new CanonicalizeGetModifiers().new T5().getClass().getModifiers(), 0/* NONE */ | ClassFile.ACC_IDENTITY); 99 Asserts.assertEQ(T6.class.getModifiers(), Modifier.ABSTRACT | Modifier.STATIC | Modifier.INTERFACE); 100 101 Asserts.assertEQ(int.class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL); 102 Asserts.assertEQ(long.class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL); 103 Asserts.assertEQ(double.class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL); 104 Asserts.assertEQ(float.class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL); 105 Asserts.assertEQ(char.class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL); 106 Asserts.assertEQ(byte.class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL); 107 Asserts.assertEQ(short.class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL); 108 Asserts.assertEQ(void.class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL); 109 Asserts.assertEQ(int[].class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL | (PreviewFeatures.isEnabled() ? ClassFile.ACC_IDENTITY : 0)); 110 Asserts.assertEQ(long[].class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL | (PreviewFeatures.isEnabled() ? ClassFile.ACC_IDENTITY : 0)); 111 Asserts.assertEQ(double[].class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL | (PreviewFeatures.isEnabled() ? ClassFile.ACC_IDENTITY : 0)); 112 Asserts.assertEQ(float[].class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL | (PreviewFeatures.isEnabled() ? ClassFile.ACC_IDENTITY : 0)); 113 Asserts.assertEQ(char[].class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL | (PreviewFeatures.isEnabled() ? ClassFile.ACC_IDENTITY : 0)); 114 Asserts.assertEQ(byte[].class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL | (PreviewFeatures.isEnabled() ? ClassFile.ACC_IDENTITY : 0)); 115 Asserts.assertEQ(short[].class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL | (PreviewFeatures.isEnabled() ? ClassFile.ACC_IDENTITY : 0)); 116 Asserts.assertEQ(Object[].class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL | (PreviewFeatures.isEnabled() ? ClassFile.ACC_IDENTITY : 0)); 117 Asserts.assertEQ(CanonicalizeGetModifiers[].class.getModifiers(), Modifier.PUBLIC | Modifier.ABSTRACT | Modifier.FINAL | (PreviewFeatures.isEnabled() ? ClassFile.ACC_IDENTITY : 0)); 118 119 Asserts.assertEQ(new CanonicalizeGetModifiers().getClass().getModifiers(), Modifier.PUBLIC | ClassFile.ACC_IDENTITY); 120 Asserts.assertEQ(new T1().getClass().getModifiers(), Modifier.PUBLIC | Modifier.STATIC | ClassFile.ACC_IDENTITY); 121 Asserts.assertEQ(new T2().getClass().getModifiers(), Modifier.PUBLIC | Modifier.FINAL | Modifier.STATIC | ClassFile.ACC_IDENTITY); 122 Asserts.assertEQ(new T3().getClass().getModifiers(), Modifier.PRIVATE | Modifier.STATIC | ClassFile.ACC_IDENTITY); 123 Asserts.assertEQ(new T4().getClass().getModifiers(), Modifier.PROTECTED | Modifier.STATIC | ClassFile.ACC_IDENTITY); 124 try { 125 // null_check 126 poison.getModifiers(); 127 } catch(NullPointerException npe) { 128 // got it! 129 } 130 } 131 132 public static void main(String... args) { 133 for (int i = 0; i < 10_000; i++) { 134 test(i == 9999 ? null : CanonicalizeGetModifiers.class); 135 } 136 } 137 } --- EOF ---