In this block of code, on 10th line (i = ii) is yellow warning, "The assigned value is never used", but it is wrong:

        int[] arr = new int[] {1, 2, 3, 4};
        int di = 0;
        do {
            int i = di;
            do {
                int ii = arr[i];                
                if (ii == 4) {
                    break;                    
                } else {
                    i = ii;
                }
            } while(true);
        } while(++di < 4);