jdk8-mips64-public/hotspot: test/compiler/7141637/SpreadNullArg.java@5dcfeb396fed

     1 /*

     2  * Copyright 2011 SAP AG.  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  */

    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  */

    32 import java.lang.invoke.MethodHandle;

    33 import java.lang.invoke.MethodHandles;

    34 import java.lang.invoke.MethodType;

    36 public class SpreadNullArg {

    38   public static void main(String args[]) {

    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;

    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     } catch(NullPointerException e) {

    50       // Expected exception - do nothing!

    51     } catch(Throwable e) {

    52       throw new Error(e);

    53     }

    55     if (result != 42) throw new Error("Expected NullPointerException was not thrown");

    56   }

    58   public static int target_spread_arg(Integer i1) {

    59     return i1.intValue();

    60   }

    62 }

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