AMD OpenCL compiler crash test case

CrashTestCase.cl

__kernel void broken(__global double* _x,
                     __global double* _y,
                     __global int* debug,
                     int missing)
{
    int k = get_global_id(0);

    while (k < 100)
    {
        //double x = _x[k];

        if (missing == 0)
        {
            double z = sqrt(3.3);
            /*
            // I thought this was related, but it apparently isn't
            if (z != z)
            {
                //atom_inc(&debug[0]);
            }
            */
        }

        //k += get_local_size(0) * get_num_groups(0);
    }
//    _y[get_global_id(0)] = z;
}