32ac72c3d3
Co-authored-by: Maurizio Cimadamore <mcimadamore@openjdk.org> Co-authored-by: Jorn Vernee <jvernee@openjdk.org> Co-authored-by: Per Minborg <pminborg@openjdk.org> Reviewed-by: dholmes, psandoz, mcimadamore, alanb
80 lines
2.8 KiB
Java
80 lines
2.8 KiB
Java
/*
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* Copyright (c) 2021, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @run testng/othervm
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* --enable-native-access=ALL-UNNAMED
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* TestNULLAddress
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*/
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import org.testng.annotations.Test;
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import java.lang.foreign.Linker;
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import java.lang.foreign.FunctionDescriptor;
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import java.lang.foreign.MemorySegment;
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import java.lang.foreign.SymbolLookup;
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import java.lang.foreign.ValueLayout;
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import java.lang.invoke.MethodHandle;
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import static org.testng.Assert.*;
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public class TestNULLAddress {
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static {
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System.loadLibrary("Null");
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}
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static final Linker LINKER = Linker.nativeLinker();
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@Test(expectedExceptions = IllegalArgumentException.class)
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public void testNULLLinking() {
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LINKER.downcallHandle(
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MemorySegment.NULL,
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FunctionDescriptor.ofVoid());
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}
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@Test(expectedExceptions = IllegalArgumentException.class)
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public void testNULLVirtual() throws Throwable {
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MethodHandle mh = LINKER.downcallHandle(
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FunctionDescriptor.ofVoid());
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mh.invokeExact(MemorySegment.NULL);
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}
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@Test
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public void testNULLReturn_target() throws Throwable {
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MethodHandle mh = LINKER.downcallHandle(SymbolLookup.loaderLookup().find("get_null").get(),
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FunctionDescriptor.of(ValueLayout.ADDRESS.withTargetLayout(ValueLayout.JAVA_INT)));
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MemorySegment ret = (MemorySegment)mh.invokeExact();
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assertTrue(ret.equals(MemorySegment.NULL));
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}
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@Test
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public void testNULLReturn_plain() throws Throwable {
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MethodHandle mh = LINKER.downcallHandle(SymbolLookup.loaderLookup().find("get_null").get(),
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FunctionDescriptor.of(ValueLayout.ADDRESS));
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MemorySegment ret = (MemorySegment)mh.invokeExact();
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assertTrue(ret.equals(MemorySegment.NULL));
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}
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}
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