This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 114a. See http://www.open-std.org/jtc1/sc22/wg21/ for the official list.
2024-04-18
The following line in the example in 11.8.5 [class.protected] paragraph 1 is no longer allowed following the change from issue 1873:
class B {
protected:
int i;
static int j;
};
// ...
class D2 : public B {
friend void fr(B*, D1*, D2*);
void mem(B*, D1*);
};
void fr(B* pb, D1* p1, D2* p2) {
// ...
p2->B::i = 4; // OK (access through a D2, even though naming class is B)
// ...
}
The example line ought to work, but none of the bullets in 11.8.3 [class.access.base] paragraph 5 apply:
A member m is accessible at the point R when named in class N if
- m as a member of N is public, or
- m as a member of N is private, and R occurs in a direct member or friend of class N, or
- m as a member of N is protected, and R occurs in a direct member or friend of class N, or in a member of a class P derived from N, where m as a member of P is public, private, or protected, or
- there exists a base class B of N that is accessible at R, and m is accessible at R when named in class B.
One aproach might be that 11.8.3 [class.access.base] bullet 5.3 should also consider friends of a class P derived from N where P is the type of the object expression (if any) or a base class thereof, and m as a member of P is public, protected, or private.