1 /*
 2  * Copyright (c) 2023, 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  * @enablePreview
27  * @library ../
28  * @requires jdk.foreign.linker != "UNSUPPORTED"
29  * @modules java.base/jdk.internal.foreign
30  * @run testng/othervm --enable-native-access=ALL-UNNAMED TestLargeStub
31  */
32 
33 import org.testng.annotations.Test;
34 
35 import java.lang.foreign.FunctionDescriptor;
36 import java.lang.foreign.Linker;
37 import java.lang.foreign.MemoryLayout;
38 import java.util.stream.Stream;
39 
40 public class TestLargeStub extends NativeTestHelper {
41     @Test
42     public void testDowncall() {
43         // Link a handle with a large number of arguments, to try and overflow the code buffer
44         Linker.nativeLinker().downcallHandle(
45                 FunctionDescriptor.of(C_LONG_LONG,
46                         Stream.generate(() -> C_DOUBLE).limit(50).toArray(MemoryLayout[]::new)),
47                 Linker.Option.captureCallState("errno"));
48     }
49 
50     @Test
51     public void testUpcall() {
52         // Link a handle with a large number of arguments, to try and overflow the code buffer
53         Linker.nativeLinker().downcallHandle(
54                 FunctionDescriptor.of(C_LONG_LONG,
55                         Stream.generate(() -> C_DOUBLE).limit(50).toArray(MemoryLayout[]::new)));
56     }
57 }