Better c++ design to avoid leaks in case of exceptions

diff --git a/src/Radio/radio.cxx b/src/Radio/radio.cxx
index acb3ce1955cb5f52819a14f02120d694cc5904ae..0b36a659d639f2d629f181e82064d22ad5835f9b 100644 (file)
--- a/src/Radio/radio.cxx
+++ b/src/Radio/radio.cxx
@@ -29,6 +29,7 @@
 #include "radio.hxx"
 #include <simgear/scene/material/mat.hxx>
 #include <Scenery/scenery.hxx>
+#include <boost/scoped_array.hpp>
 
 #define WITH_POINT_TO_POINT 1
 #include "itm.cpp"
@@ -382,8 +383,7 @@ double FGRadioTransmission::ITM_calculate_attenuation(SGGeod pos, double freq, i
        elevations.push_front(num_points -1);
 
        int size = elevations.size();
-       double *itm_elev;
-       itm_elev = new double[size];
+        boost::scoped_array<double> itm_elev( new double[size] );
 
        for(int i=0;i<size;i++) {
                itm_elev[i]=elevations[i];
@@ -391,18 +391,18 @@ double FGRadioTransmission::ITM_calculate_attenuation(SGGeod pos, double freq, i
        
        if((transmission_type == 3) || (transmission_type == 4)) {
                // the sender and receiver roles are switched
-               ITM::point_to_point(itm_elev, receiver_height, transmitter_height,
+               ITM::point_to_point(itm_elev.get(), receiver_height, transmitter_height,
                        eps_dielect, sgm_conductivity, eno, frq_mhz, radio_climate,
                        pol, conf, rel, dbloss, strmode, p_mode, horizons, errnum);
                if( _root_node->getBoolValue( "use-clutter-attenuation", false ) )
-                       calculate_clutter_loss(frq_mhz, itm_elev, materials, receiver_height, transmitter_height, p_mode, horizons, clutter_loss);
+                       calculate_clutter_loss(frq_mhz, itm_elev.get(), materials, receiver_height, transmitter_height, p_mode, horizons, clutter_loss);
        }
        else {
-               ITM::point_to_point(itm_elev, transmitter_height, receiver_height,
+               ITM::point_to_point(itm_elev.get(), transmitter_height, receiver_height,
                        eps_dielect, sgm_conductivity, eno, frq_mhz, radio_climate,
                        pol, conf, rel, dbloss, strmode, p_mode, horizons, errnum);
                if( _root_node->getBoolValue( "use-clutter-attenuation", false ) )
-                       calculate_clutter_loss(frq_mhz, itm_elev, materials, transmitter_height, receiver_height, p_mode, horizons, clutter_loss);
+                       calculate_clutter_loss(frq_mhz, itm_elev.get(), materials, transmitter_height, receiver_height, p_mode, horizons, clutter_loss);
        }
        
        double pol_loss = 0.0;
@@ -457,7 +457,6 @@ double FGRadioTransmission::ITM_calculate_attenuation(SGGeod pos, double freq, i
        //_root_node->setDoubleValue("station[0]/tx-pattern-gain", tx_pattern_gain);
        //_root_node->setDoubleValue("station[0]/rx-pattern-gain", rx_pattern_gain);
 
-       delete[] itm_elev;
        for (unsigned i =0; i < materials.size(); i++) {
                delete materials[i];
        }