1 /*
 2  *  Copyright (c) 2021, 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  * @requires ((os.arch == "amd64" | os.arch == "x86_64") & sun.arch.data.model == "64") | os.arch == "aarch64"
27  * @modules jdk.incubator.foreign
28  * @run testng/othervm
29  *     --enable-native-access=ALL-UNNAMED
30  *     TestNULLAddress
31  */
32 
33 import jdk.incubator.foreign.Addressable;
34 import jdk.incubator.foreign.CLinker;
35 import jdk.incubator.foreign.FunctionDescriptor;
36 import jdk.incubator.foreign.MemoryAddress;
37 import org.testng.annotations.Test;
38 
39 import java.lang.invoke.MethodHandle;
40 import java.lang.invoke.MethodType;
41 import java.nio.charset.Charset;
42 
43 public class TestNULLAddress {
44 
45     static final CLinker LINKER = CLinker.getInstance();
46 
47     @Test(expectedExceptions = IllegalArgumentException.class)
48     public void testNULLLinking() {
49         LINKER.downcallHandle(
50                 MemoryAddress.NULL,
51                 MethodType.methodType(void.class),
52                 FunctionDescriptor.ofVoid());
53     }
54 
55     @Test(expectedExceptions = IllegalArgumentException.class)
56     public void testNULLVirtual() throws Throwable {
57         MethodHandle mh = LINKER.downcallHandle(
58                 MethodType.methodType(void.class),
59                 FunctionDescriptor.ofVoid());
60         mh.invokeExact((Addressable) MemoryAddress.NULL);
61     }
62 
63     @Test(expectedExceptions = IllegalArgumentException.class)
64     public void testNULLtoJavaString() {
65         CLinker.toJavaString(MemoryAddress.NULL);
66     }
67 
68     @Test(expectedExceptions = IllegalArgumentException.class)
69     public void testNULLfreeMemory() {
70         CLinker.freeMemory(MemoryAddress.NULL);
71     }
72 }