1/* 2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 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 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24/* 25 * @test 26 * @bug 8051045 8166974 27 * @summary Test exceptions from invokedynamic and the bootstrap method 28 * @modules java.base/jdk.internal.org.objectweb.asm 29 * @run main BootstrapMethodErrorTest 30 */ 31 32import jdk.internal.org.objectweb.asm.ClassWriter; 33import jdk.internal.org.objectweb.asm.Handle; 34import jdk.internal.org.objectweb.asm.MethodVisitor; 35import jdk.internal.org.objectweb.asm.Opcodes; 36 37import java.lang.invoke.CallSite; 38import java.lang.invoke.ConstantCallSite; 39import java.lang.invoke.MethodHandle; 40import java.lang.invoke.MethodHandles; 41import java.lang.invoke.MethodType; 42import java.lang.invoke.WrongMethodTypeException; 43import java.lang.reflect.InvocationTargetException; 44import java.util.List; 45 46public class BootstrapMethodErrorTest { 47 48 static abstract class IndyClassloader extends ClassLoader implements Opcodes { 49 50 public IndyClassloader() { 51 super(BootstrapMethodErrorTest.class.getClassLoader()); 52 } 53 54 @Override 55 public Class findClass(String name) throws ClassNotFoundException { 56 byte[] b; 57 try { 58 b = loadClassData(name); 59 } 60 catch (Throwable th) { 61 throw new ClassNotFoundException("Loading error", th); 62 } 63 return defineClass(name, b, 0, b.length); 64 } 65 66 static final String BOOTSTRAP_METHOD_CLASS_NAME = "C"; 67 68 static final String BOOTSTRAP_METHOD_NAME = "bsm"; 69 70 static final String INDY_CALLER_CLASS_NAME = "Exec"; 71 72 static final String BOOTSTRAP_METHOD_DESC = MethodType.methodType( 73 Object.class, MethodHandles.Lookup.class, String.class, MethodType.class). 74 toMethodDescriptorString(); 75 76 private byte[] loadClassData(String name) throws Exception { 77 ClassWriter cw = new ClassWriter( 78 ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS); 79 if (name.equals(BOOTSTRAP_METHOD_CLASS_NAME)) { 80 defineIndyBootstrapMethodClass(cw); 81 return cw.toByteArray(); 82 } 83 else if (name.equals("Exec")) { 84 defineIndyCallingClass(cw); 85 return cw.toByteArray(); 86 } 87 return null; 88 } 89 90 void defineIndyCallingClass(ClassWriter cw) { 91 cw.visit(52, ACC_SUPER | ACC_PUBLIC, INDY_CALLER_CLASS_NAME, null, "java/lang/Object", null); 92 MethodVisitor mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, "invoke", "()V", null, null); 93 mv.visitCode(); 94 Handle h = new Handle(H_INVOKESTATIC, 95 BOOTSTRAP_METHOD_CLASS_NAME, BOOTSTRAP_METHOD_NAME, 96 BOOTSTRAP_METHOD_DESC, false); 97 mv.visitInvokeDynamicInsn(BOOTSTRAP_METHOD_CLASS_NAME, "()V", h); 98 mv.visitInsn(RETURN); 99 mv.visitMaxs(0, 0); 100 mv.visitEnd(); 101 cw.visitEnd(); 102 } 103 104 void defineIndyBootstrapMethodClass(ClassWriter cw) { 105 cw.visit(52, ACC_SUPER | ACC_PUBLIC, 106 BOOTSTRAP_METHOD_CLASS_NAME, null, "java/lang/Object", null); 107 MethodVisitor mv = cw.visitMethod(ACC_PUBLIC | ACC_STATIC, 108 BOOTSTRAP_METHOD_NAME, BOOTSTRAP_METHOD_DESC, null, null); 109 mv.visitCode(); 110 defineIndyBootstrapMethodBody(mv); 111 mv.visitMaxs(0, 0); 112 mv.visitEnd(); 113 } 114 115 void defineIndyBootstrapMethodBody(MethodVisitor mv) { 116 mv.visitInsn(ACONST_NULL); 117 mv.visitInsn(ARETURN); 118 } 119 120 void invoke() throws Exception { 121 Class.forName(BOOTSTRAP_METHOD_CLASS_NAME, true, this); 122 Class<?> exec = Class.forName(INDY_CALLER_CLASS_NAME, true, this); 123 exec.getMethod("invoke").invoke(null); 124 } 125 126 void test() throws Exception { 127 Class.forName(BOOTSTRAP_METHOD_CLASS_NAME, true, this); 128 Class<?> exec = Class.forName(INDY_CALLER_CLASS_NAME, true, this); 129 try { 130 exec.getMethod("invoke").invoke(null); 131 throw new RuntimeException("Expected InvocationTargetException but no exception at all was thrown"); 132 } catch (InvocationTargetException e) { 133 Throwable t = e.getCause(); 134 for (Class<? extends Throwable> etc : expectedThrowableClasses()) { 135 if (!etc.isInstance(t)) { 136 throw new RuntimeException( 137 "Expected " + etc.getName() + " but got another exception: " 138 + t.getClass().getName(), 139 t); 140 } 141 t = t.getCause(); 142 } 143 } 144 } 145 146 abstract List<Class<? extends Throwable>> expectedThrowableClasses(); 147 } 148 149 // Methods called by a bootstrap method 150 151 public static CallSite getCallSite() { 152 try { 153 MethodHandle mh = MethodHandles.lookup().findStatic( 154 BootstrapMethodErrorTest.class, 155 "target", 156 MethodType.methodType(Object.class, Object.class)); 157 return new ConstantCallSite(mh); 158 } catch (Exception e) { 159 throw new RuntimeException(e); 160 } 161 } 162 public static Object target(Object o) { 163 return null; 164 } 165 166 static class TestThrowable extends Throwable {} 167 public static void throwsTestThrowable() throws Throwable { 168 throw new TestThrowable(); 169 } 170 171 static class TestError extends Error {} 172 public static void throwsTestError() { 173 throw new TestError(); 174 } 175 176 static class TestRuntimeException extends RuntimeException {} 177 public static void throwsTestRuntimeException() { 178 throw new TestRuntimeException(); 179 } 180 181 static class TestCheckedException extends Exception {} 182 public static void throwsTestCheckedException() throws TestCheckedException { 183 throw new TestCheckedException(); 184 } 185 186 187 // Test classes 188 189 static class InaccessibleBootstrapMethod extends IndyClassloader { 190 191 void defineIndyBootstrapMethodClass(ClassWriter cw) { 192 cw.visit(52, ACC_SUPER | ACC_PUBLIC, 193 BOOTSTRAP_METHOD_CLASS_NAME, null, "java/lang/Object", null); 194 // Bootstrap method is declared to be private 195 MethodVisitor mv = cw.visitMethod(ACC_PRIVATE | ACC_STATIC, 196 BOOTSTRAP_METHOD_NAME, BOOTSTRAP_METHOD_DESC, null, null); 197 mv.visitCode(); 198 defineIndyBootstrapMethodBody(mv); 199 mv.visitMaxs(0, 0); 200 mv.visitEnd(); 201 } 202 203 @Override 204 List<Class<? extends Throwable>> expectedThrowableClasses() { 205 return List.of(IllegalAccessError.class); 206 } 207 } 208 209 static class BootstrapMethodDoesNotReturnCallSite extends IndyClassloader { 210 211 void defineIndyBootstrapMethodBody(MethodVisitor mv) { 212 // return null from the bootstrap method, 213 // which cannot be cast to CallSite 214 mv.visitInsn(ACONST_NULL); 215 mv.visitInsn(ARETURN); 216 } 217 218 @Override 219 List<Class<? extends Throwable>> expectedThrowableClasses() { 220 return List.of(BootstrapMethodError.class, ClassCastException.class); 221 } 222 } 223 224 static class BootstrapMethodCallSiteHasWrongTarget extends IndyClassloader { 225 226 @Override 227 void defineIndyBootstrapMethodBody(MethodVisitor mv) { 228 // Invoke the method BootstrapMethodErrorTest.getCallSite to obtain 229 // a CallSite instance whose target is different from that of 230 // the indy call site 231 mv.visitMethodInsn(INVOKESTATIC, "BootstrapMethodErrorTest", 232 "getCallSite", "()Ljava/lang/invoke/CallSite;", false); 233 mv.visitInsn(ARETURN); 234 } 235 236 @Override 237 List<Class<? extends Throwable>> expectedThrowableClasses() { 238 return List.of(BootstrapMethodError.class, WrongMethodTypeException.class); 239 } 240 } 241 242 abstract static class BootstrapMethodThrows extends IndyClassloader { 243 final String methodName; 244 245 public BootstrapMethodThrows(Class<? extends Throwable> t) { 246 this.methodName = "throws" + t.getSimpleName(); 247 } 248 249 @Override 250 void defineIndyBootstrapMethodBody(MethodVisitor mv) { 251 // Invoke the method whose name is methodName which will throw 252 // an exception 253 mv.visitMethodInsn(INVOKESTATIC, "BootstrapMethodErrorTest", 254 methodName, "()V", false); 255 mv.visitInsn(ACONST_NULL); 256 mv.visitInsn(ARETURN); 257 } 258 } 259 260 static class BootstrapMethodThrowsThrowable extends BootstrapMethodThrows { 261 262 public BootstrapMethodThrowsThrowable() { 263 super(TestThrowable.class); 264 } 265 266 @Override 267 List<Class<? extends Throwable>> expectedThrowableClasses() { 268 return List.of(BootstrapMethodError.class, TestThrowable.class); 269 } 270 } 271 272 static class BootstrapMethodThrowsError extends BootstrapMethodThrows { 273 274 public BootstrapMethodThrowsError() { 275 super(TestError.class); 276 } 277 278 @Override 279 List<Class<? extends Throwable>> expectedThrowableClasses() { 280 return List.of(TestError.class); 281 } 282 } 283 284 static class BootstrapMethodThrowsRuntimeException extends BootstrapMethodThrows { 285 286 public BootstrapMethodThrowsRuntimeException() { 287 super(TestRuntimeException.class); 288 } 289 290 @Override 291 List<Class<? extends Throwable>> expectedThrowableClasses() { 292 return List.of(BootstrapMethodError.class, TestRuntimeException.class); 293 } 294 } 295 296 static class BootstrapMethodThrowsCheckedException extends BootstrapMethodThrows { 297 298 public BootstrapMethodThrowsCheckedException() { 299 super(TestCheckedException.class); 300 } 301 302 @Override 303 List<Class<? extends Throwable>> expectedThrowableClasses() { 304 return List.of(BootstrapMethodError.class, TestCheckedException.class); 305 } 306 } 307 308 309 public static void main(String[] args) throws Exception { 310 new InaccessibleBootstrapMethod().test(); 311 new BootstrapMethodDoesNotReturnCallSite().test(); 312 new BootstrapMethodCallSiteHasWrongTarget().test(); 313 new BootstrapMethodThrowsThrowable().test(); 314 new BootstrapMethodThrowsError().test(); 315 new BootstrapMethodThrowsRuntimeException().test(); 316 new BootstrapMethodThrowsCheckedException().test(); 317 } 318} 319