1 /* 2 * Copyright (c) 2013, 2017, 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 /java/lang/invoke/common 28 * @summary MethodHandles.catchException() fails when methods have 8 args + varargs 29 * @run main TestCatchExceptionWithVarargs 30 */ 31 32 import test.java.lang.invoke.lib.CodeCacheOverflowProcessor; 33 34 import java.lang.invoke.MethodHandle; 35 import java.lang.invoke.MethodHandles; 36 import java.lang.invoke.MethodType; 37 import java.util.LinkedList; 38 import java.util.List; 39 40 public class TestCatchExceptionWithVarargs { 41 42 private static final Class<?> CLASS = TestCatchExceptionWithVarargs.class; 43 private static final int MAX_MH_ARITY = 254; 44 45 public static MethodHandle target; 46 public static MethodHandle handler; 47 48 private static Object firstArg; 49 50 static class MyException extends Exception { 51 } 52 53 public static Object target(Object... a) throws Exception { 54 if (a[0] != firstArg) { 55 throw new AssertionError("first argument different than expected: " 56 + a[0] + " != " + firstArg); 57 } 58 throw new MyException(); 59 } 60 61 public static Object handler(Object... a) { 62 if (a[0] != firstArg) { 63 throw new AssertionError("first argument different than expected: " 64 + a[0] + " != " + firstArg); 65 } 66 return a[0]; 67 } 68 69 static { 70 try { 71 MethodType mtype = MethodType.methodType(Object.class, Object[].class); 72 target = MethodHandles.lookup().findStatic(CLASS, "target", mtype); 73 handler = MethodHandles.lookup().findStatic(CLASS, "handler", mtype); 74 } catch (Exception e) { 75 throw new AssertionError(e); 76 } 77 } 78 79 public static void main(String[] args) throws Throwable { 80 CodeCacheOverflowProcessor 81 .runMHTest(TestCatchExceptionWithVarargs::test); 82 } 83 84 public static void test() throws Throwable { 85 List<Class<?>> ptypes = new LinkedList<>(); 86 ptypes.add(Object[].class); 87 88 // We use MAX_MH_ARITY - 1 here to account for the Object[] argument. 89 for (int i = 1; i < MAX_MH_ARITY - 1; i++) { 90 ptypes.add(0, Object.class); 91 92 MethodHandle targetWithArgs = target.asType( 93 MethodType.methodType(Object.class, ptypes)); 94 MethodHandle handlerWithArgs = handler.asType( 95 MethodType.methodType(Object.class, ptypes)); 96 handlerWithArgs = MethodHandles.dropArguments( 97 handlerWithArgs, 0, MyException.class); 98 99 MethodHandle gwc1 = MethodHandles.catchException( 100 targetWithArgs, MyException.class, handlerWithArgs); 101 102 // The next line throws an IllegalArgumentException if there is a bug. 103 MethodHandle gwc2 = MethodHandles.catchException( 104 gwc1, MyException.class, handlerWithArgs); 105 106 // This is only to verify that the method handles can actually be invoked and do the right thing. 107 firstArg = new Object(); 108 Object o = gwc2.asSpreader(Object[].class, ptypes.size() - 1) 109 .invoke(firstArg, new Object[i]); 110 if (o != firstArg) { 111 throw new AssertionError("return value different than expected: " 112 + o + " != " + firstArg); 113 } 114 } 115 } 116 }