/*
* Copyright 2011 SAP AG. 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
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*/
/*
* @test SpreadNullArg
* @bug 7141637
* @summary verifies that the MethodHandle spread adapter can gracefully handle null arguments.
* @run main SpreadNullArg
* @author volker.simonis@gmail.com
*/
import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodHandles;
import java.lang.invoke.MethodType;
public class SpreadNullArg {
public static void main(String args[]) {
MethodType mt_ref_arg = MethodType.methodType(int.class, Integer.class);
MethodHandle mh_spreadInvoker = MethodHandles.spreadInvoker(mt_ref_arg, 0);
MethodHandle mh_spread_target;
int result = 42;
try {
mh_spread_target =
MethodHandles.lookup().findStatic(SpreadNullArg.class, "target_spread_arg", mt_ref_arg);
result = (int) mh_spreadInvoker.invokeExact(mh_spread_target, (Object[]) null);
} catch(NullPointerException e) {
// Expected exception - do nothing!
} catch(Throwable e) {
throw new Error(e);
}
if (result != 42) throw new Error("Expected NullPointerException was not thrown");
}
public static int target_spread_arg(Integer i1) {
return i1.intValue();
}
}