On 3/16/07, Pranabesh Dash <pranabesh.dash@xxxxxxxxx> wrote:
Hi,
The following piece of code compiles fine with 3.4.2, 4.0.0 but errors out on 4.1.0. Seems like a GCC bug. The friend function name is recognized if called as a function but does not work when used as a function pointer. An explicit function declaration (or definition reordered) is needed to get it to compile with 4.1.0.
Do you believe this is a bug or a feature???
--P.D
#include <iostream>
using namespace std;
class object;
typedef void (func_ptr)( object* );
class object {
public:
object() {}
~object() {}
void top_func();
void call_func_ptr(func_ptr);
protected:
friend void frnd_func(object*);
private:
int member;
};
//friend.cpp: In member function #void object::top_func()#:
//friend.cpp:27: error: #frnd_func# was not declared in this scope
// The following needs to be uncommented to get 4.1.0 to compile
//void frnd_func(object*) ;
void object::top_func() {
frnd_func(this); // Does not complain on this
call_func_ptr(frnd_func); // But complains on this !!!!!
}
void object::call_func_ptr(func_ptr fp) {
fp(this);
}
void frnd_func(object* obj) {
obj->member = 4;
}
main () {
object my_obj;
}
