Shriramana Sharma wrote:
> class Integer
> {
> public :
> Integer ( int i ) : i_ ( i ) {}
> private :
> int i_ ;
> } ;
> int main ( void )
> {
> Integer a ( 1 ) ;
> Integer c ( a ) ;
> }
>
> I do: g++ -c and then run nm -C on the object file. I get only:
>
> 00000000 W Integer::Integer(int)
> U __gxx_personality_v0
> 00000000 T main
>
> Why do I not see the signature of the copy constructor
> Integer::Integer(const Integer&) in the symbols list even though it is
> automatically created?
Because it's inlined. The default copy constructor just copies the raw
data.
> Also, why do I not see i_, a and c and the name of the class Integer
> itself? Are they not also symbols?
a and c are automatic variables, which are created on the stack
whenever the function is called and destroyed when it returns. They
don't exist within the executable.
i_ is a structure field; it doesn't have an existence separate from
the object to which it belongs.
--
Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx>
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