| /* |
| * Copyright (c) 2013, 2015, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8019184 |
| * @library /lib/testlibrary /lib/testlibrary/jsr292 |
| * @summary MethodHandles.catchException() fails when methods have 8 args + varargs |
| * @run main TestCatchExceptionWithVarargs |
| */ |
| |
| import com.oracle.testlibrary.jsr292.CodeCacheOverflowProcessor; |
| import java.util.*; |
| import java.lang.invoke.*; |
| |
| public class TestCatchExceptionWithVarargs { |
| |
| private static final Class<?> CLASS = TestCatchExceptionWithVarargs.class; |
| private static final int MAX_MH_ARITY = 254; |
| |
| public static MethodHandle target; |
| public static MethodHandle handler; |
| |
| private static Object firstArg; |
| |
| static class MyException extends Exception { |
| } |
| |
| public static Object target(Object... a) throws Exception { |
| if (a[0] != firstArg) { |
| throw new AssertionError("first argument different than expected: " + a[0] + " != " + firstArg); |
| } |
| throw new MyException(); |
| } |
| |
| public static Object handler(Object... a) { |
| if (a[0] != firstArg) { |
| throw new AssertionError("first argument different than expected: " + a[0] + " != " + firstArg); |
| } |
| return a[0]; |
| } |
| |
| static { |
| try { |
| MethodType mtype = MethodType.methodType(Object.class, Object[].class); |
| target = MethodHandles.lookup().findStatic(CLASS, "target", mtype); |
| handler = MethodHandles.lookup().findStatic(CLASS, "handler", mtype); |
| } catch (Exception e) { |
| throw new AssertionError(e); |
| } |
| } |
| |
| public static void main(String[] args) throws Throwable { |
| CodeCacheOverflowProcessor |
| .runMHTest(TestCatchExceptionWithVarargs::test); |
| } |
| |
| public static void test() throws Throwable { |
| List<Class<?>> ptypes = new LinkedList<>(); |
| ptypes.add(Object[].class); |
| |
| // We use MAX_MH_ARITY - 1 here to account for the Object[] argument. |
| for (int i = 1; i < MAX_MH_ARITY - 1; i++) { |
| ptypes.add(0, Object.class); |
| |
| MethodHandle targetWithArgs = target.asType(MethodType.methodType(Object.class, ptypes)); |
| MethodHandle handlerWithArgs = handler.asType(MethodType.methodType(Object.class, ptypes)); |
| handlerWithArgs = MethodHandles.dropArguments(handlerWithArgs, 0, MyException.class); |
| |
| MethodHandle gwc1 = MethodHandles.catchException(targetWithArgs, MyException.class, handlerWithArgs); |
| |
| // The next line throws an IllegalArgumentException if there is a bug. |
| MethodHandle gwc2 = MethodHandles.catchException(gwc1, MyException.class, handlerWithArgs); |
| |
| // This is only to verify that the method handles can actually be invoked and do the right thing. |
| firstArg = new Object(); |
| Object o = gwc2.asSpreader(Object[].class, ptypes.size() - 1).invoke(firstArg, new Object[i]); |
| if (o != firstArg) { |
| throw new AssertionError("return value different than expected: " + o + " != " + firstArg); |
| } |
| } |
| } |
| } |