TestNULLTarget.java

/*
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 *  DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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/*
 * @test
 * @requires ((os.arch == "amd64" | os.arch == "x86_64") & sun.arch.data.model == "64") | os.arch == "aarch64"
 * @modules jdk.incubator.foreign
 * @run testng/othervm
 *     --enable-native-access=ALL-UNNAMED
 *     TestNULLTarget
 */

import jdk.incubator.foreign.Addressable;
import jdk.incubator.foreign.CLinker;
import jdk.incubator.foreign.FunctionDescriptor;
import jdk.incubator.foreign.MemoryAddress;
import org.testng.annotations.Test;

import java.lang.invoke.MethodHandle;
import java.lang.invoke.MethodType;

public class TestNULLTarget {

    static final CLinker LINKER = CLinker.getInstance();

    @Test(expectedExceptions = IllegalArgumentException.class)
    public void testNULLLinking() {
        LINKER.downcallHandle(
                MemoryAddress.NULL,
                MethodType.methodType(void.class),
                FunctionDescriptor.ofVoid());
    }

    @Test(expectedExceptions = IllegalArgumentException.class)
    public void testNULLVirtual() throws Throwable {
        MethodHandle mh = LINKER.downcallHandle(
                MethodType.methodType(void.class),
                FunctionDescriptor.ofVoid());
        mh.invokeExact((Addressable) MemoryAddress.NULL);
    }
}