Miért warningol a fordító? Amúgy jól működik de mi a veszélyes ebben?

// main.cpp

# include <iostream>

# include <string.h>

typedef unsigned short ushort ;

using std::cout ;

using std::endl ;

using std::string ;

class cProba

{

public:

cProba():

x({14,82,8,4}) {} /*Itt miért kapom ezt a warningot: list-initializer for non-class type must not be parenthesized [enabled by default] */

short x[4] ;

protected:

private:

};

int main(void)

{

cProba obj ;

for(ushort i = 0; i < sizeof(obj.x) / sizeof(*obj.x); ++i)

cout << *(obj.x + i) << endl ;

return int(0) ;

}