TestC1ArrayCopyNPE.java

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/* @test TestC1ArrayCopyNPE
 * @summary test C1 arraycopy intrinsic
 * @requires vm.gc.Shenandoah
 * @run main/othervm -XX:TieredStopAtLevel=1 -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=aggressive TestC1ArrayCopyNPE
 */

public class TestC1ArrayCopyNPE {

    private static final int NUM_RUNS = 10000;
    private static final int ARRAY_SIZE = 10000;
    private static int[] a;
    private static int[] b;

    public static void main(String[] args) {
        a = null;
        b = new int[ARRAY_SIZE];
        for (int i = 0; i < NUM_RUNS; i++) {
            test();
        }
        a = new int[ARRAY_SIZE];
        b = null;
        for (int i = 0; i < NUM_RUNS; i++) {
            test();
        }
    }

    private static void test() {
        try {
            System.arraycopy(a, 0, b, 0, ARRAY_SIZE);
            throw new RuntimeException("test failed");
        } catch (NullPointerException ex) {
            // Ok
        }
    }
}