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/**
 * @test
 * @bug 8381063
 * @summary Verify that null is passed for jobject parameter to JVMTI SampledObjectAlloc event callbacks.
 * @requires vm.jvmti
 *
 * @enablePreview
 * @run main/othervm/native -agentlib:SampledObjectAllocValue SampledObjectAllocValue
 */

public class SampledObjectAllocValue {

    private static value class ValueClass {
        public long x;
        public long y;

        public ValueClass(long arg1, long arg2) {
          x = arg1; y = arg2;
        }
    }

    private static ValueClass[] tmp = new ValueClass[100];

    private static native void enableEvents(Thread thread, Class testedClass);

    public static void main(String[] args) throws Exception {
        enableEvents(Thread.currentThread(), ValueClass.class);
        // Allocate value objects to trigger JVMTI SampledObjectAlloc events.
        // Here we assume that flat array layout is not used for ValueClass objects.
        for (int i = 0; i < tmp.length; i++) {
            tmp[i] = new ValueClass(i, i + 100);
        }
    }
}