std::bind throws and error while binding a member function

I am trying to give a function pointer as parameter to a clustering operation.

pcl::ConditionalEuclideanClustering<pcl::PointXYZINormal> cec;
cec.setInputCloud(ss_cloud);

//Conditions
if (m_config.condition == EuclideanCondition::pass) {
    //Next line gives an error
    cec.setConditionFunction(std::bind(&Rules::passThrough, this, _1, _2, _3));
}
else if (m_config.condition == EuclideanCondition::curvature) {
    //cec.setConditionFunction(&passThrough);
}
else if (m_config.condition == EuclideanCondition::normals) {
    //cec.setConditionFunction(&normalRule);
}

cec.setClusterTolerance(m_config.tolerance);
cec.setMinClusterSize(m_config.minSize);
cec.setMaxClusterSize(m_config.maxSize);

Than I have a member function of class Rules defined here

bool Rules::passThrough(
    const pcl::PointXYZINormal& p1, 
    const pcl::PointXYZINormal& p2, 
    float squared_distance) {
    return true;
}

The function (passThrough()) used to be a friend function to the class containing the pcl::ConditionalEuclideanClustering code and everything worked just fine. But now I need to access a few class variables in it without passing the class as parameter to passThrough() (standard for friend functions).

In other words the pcl::ConditionalEuclideanClustering expects

const pcl::PointXYZINormal& p1,
const pcl::PointXYZINormal& p2, 
float squared_distance

format that I need to respect.

I decided to make a class Rules and put all my condition functions in there. If you think there is a better idea please let me know.

The error message I get is the following:

Error C2440 'return': cannot convert from 'std::_Unforced' to 'bool'

      inline void
      setConditionFunction (bool (*condition_function) (const PointT&, const PointT&, float)) 
      {
        condition_function_ = condition_function;
      }

      /** \brief Set the condition that needs to hold for neighboring points to be considered part of the same cluster.
        * This is an overloaded function provided for convenience. See the documentation for setConditionFunction(). */
      inline void
      setConditionFunction (boost::function<bool (const PointT&, const PointT&, float)> condition_function)
      {
        condition_function_ = condition_function;
      }