#vulnerable code 
                                void computeOutputSoftmax() {
        computeOutputSoftmax(hidden_, output_);
    } 
                            #location 2 
                            #vulnerability type THREAD_SAFETY_VIOLATION
#fixed code
                                Model(Matrix wi,
          Matrix wo,
          Args args,
          int seed) {
        hidden_ = new Vector(args.dim);
        output_ = new Vector(wo.m_);
        grad_ = new Vector(args.dim);
        random = new Random(seed);
        wi_ = wi;
        wo_ = wo;
        args_ = args;
        isz_ = wi.m_;
        osz_ = wo.m_;
        hsz_ = args.dim;
        negpos = 0;
        loss_ = 0.0f;
        nexamples_ = 1;
    }