static int test1() {
        int[] src = new int[10];
        test_dummy = src;
        int[] dst = new int[10];
        src[1] = 0x42;
        System.arraycopy(src, 1, dst, 1, 9);
        return dst[1];
    }

generates a load from src[1] on the raw memory slice that can be reordered with the store to src[1]. Always fail on 8. Only fail on 9 & 10 if we're unlucky with load scheduling.