Doxygen missing @param warnings bug test

CPosition.h

/**
 * @file CPosition.h file
 */

/**
 * @brief nonclassfunc
 */
void nonclassfunc(int x, int y);

/**
 * @brief nonclassfunc
 * @param x xparam
 */
void nonclassfunc2(int x, int y);

/**
 * nonclassfunc
 */
void nonclassfunc3(int x, int y);

/**
 * @brief nonclassfunc
 */
int nonclassfunc4(int x, int y);

/**
 * @brief nonclassfunc
 * @return returns 0
 */
int nonclassfunc5(int x, int y);

class CPosition{
public:

   /**
    * @brief Constructor 1
    */
   CPosition(int x);

   /**
    * Constructor 2
    */
   CPosition(CPosition &a);

   /**
    * @brief Constructor 2
    * @param x first param
    */
   CPosition(int x, int y);

   /**
    * @brief This is a testfunc
    * @param abc
    */
   void testfunc(int abc, int xyz){
   }

   /**
    * @brief This is a testfunc2
    */
   void testfunc2(int abc, int xyz){
   }

   /**
    * This is a testfunc3
    */
   void testfunc3(int abc, int xyz);


   /**
    * This is a testfunc4
    */
   int testfunc4(int abc, int xyz);
   
   /**
    * @brief This is a testfunc5
    */
   int testfunc5(int abc, int xyz);

};