1 /* 2 * Copyright (c) 2013, 2015, 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 8019184 27 * @library /lib/testlibrary /lib/testlibrary/jsr292 28 * @summary MethodHandles.catchException() fails when methods have 8 args + varargs 29 * @run main TestCatchExceptionWithVarargs 30 */ 31 32 import com.oracle.testlibrary.jsr292.CodeCacheOverflowProcessor; 33 import java.util.*; 34 import java.lang.invoke.*; 35 36 public class TestCatchExceptionWithVarargs { 37 38 private static final Class<?> CLASS = TestCatchExceptionWithVarargs.class; 39 private static final int MAX_MH_ARITY = 254; 40 41 public static MethodHandle target; 42 public static MethodHandle handler; 43 44 private static Object firstArg; 45 46 static class MyException extends Exception { 47 } 48 49 public static Object target(Object... a) throws Exception { 50 if (a[0] != firstArg) { 51 throw new AssertionError("first argument different than expected: " + a[0] + " != " + firstArg); 52 } 53 throw new MyException(); 54 } 55 56 public static Object handler(Object... a) { 57 if (a[0] != firstArg) { 58 throw new AssertionError("first argument different than expected: " + a[0] + " != " + firstArg); 59 } 60 return a[0]; 61 } 62 63 static { 64 try { 65 MethodType mtype = MethodType.methodType(Object.class, Object[].class); 66 target = MethodHandles.lookup().findStatic(CLASS, "target", mtype); 67 handler = MethodHandles.lookup().findStatic(CLASS, "handler", mtype); 68 } catch (Exception e) { 69 throw new AssertionError(e); 70 } 71 } 72 73 public static void main(String[] args) throws Throwable { 74 CodeCacheOverflowProcessor 75 .runMHTest(TestCatchExceptionWithVarargs::test); 76 } 77 78 public static void test() throws Throwable { 79 List<Class<?>> ptypes = new LinkedList<>(); 80 ptypes.add(Object[].class); 81 82 // We use MAX_MH_ARITY - 1 here to account for the Object[] argument. 83 for (int i = 1; i < MAX_MH_ARITY - 1; i++) { 84 ptypes.add(0, Object.class); 85 86 MethodHandle targetWithArgs = target.asType(MethodType.methodType(Object.class, ptypes)); 87 MethodHandle handlerWithArgs = handler.asType(MethodType.methodType(Object.class, ptypes)); 88 handlerWithArgs = MethodHandles.dropArguments(handlerWithArgs, 0, MyException.class); 89 90 MethodHandle gwc1 = MethodHandles.catchException(targetWithArgs, MyException.class, handlerWithArgs); 91 92 // The next line throws an IllegalArgumentException if there is a bug. 93 MethodHandle gwc2 = MethodHandles.catchException(gwc1, MyException.class, handlerWithArgs); 94 95 // This is only to verify that the method handles can actually be invoked and do the right thing. 96 firstArg = new Object(); 97 Object o = gwc2.asSpreader(Object[].class, ptypes.size() - 1).invoke(firstArg, new Object[i]); 98 if (o != firstArg) { 99 throw new AssertionError("return value different than expected: " + o + " != " + firstArg); 100 } 101 } 102 } 103 }