1 /* 2 * Copyright (c) 2011 SAP SE. 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 SpreadNullArg 26 * @bug 7141637 27 * @summary verifies that the MethodHandle spread adapter can gracefully handle null arguments. 28 * @run main SpreadNullArg 29 * @author volker.simonis@gmail.com 30 */ 31 32 import java.lang.invoke.MethodHandle; 33 import java.lang.invoke.MethodHandles; 34 import java.lang.invoke.MethodType; 35 36 public class SpreadNullArg { 37 38 public static void main(String args[]) { 39 40 MethodType mt_ref_arg = MethodType.methodType(int.class, Integer.class); 41 MethodHandle mh_spreadInvoker = MethodHandles.spreadInvoker(mt_ref_arg, 0); 42 MethodHandle mh_spread_target; 43 int result = 42; 44 45 try { 46 mh_spread_target = 47 MethodHandles.lookup().findStatic(SpreadNullArg.class, "target_spread_arg", mt_ref_arg); 48 result = (int) mh_spreadInvoker.invokeExact(mh_spread_target, (Object[]) null); 49 throw new Error("Expected IllegalArgumentException was not thrown"); 50 } catch (IllegalArgumentException e) { 51 System.out.println("Expected exception : " + e); 52 } catch (Throwable e) { 53 throw new Error(e); 54 } 55 56 if (result != 42) { 57 throw new Error("result [" + result 58 + "] != 42 : Expected IllegalArgumentException was not thrown?"); 59 } 60 } 61 62 public static int target_spread_arg(Integer i1) { 63 return i1.intValue(); 64 } 65 66 }