[Bug c++/58993] incorrectly accept access of protected member method from derived class template

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58993

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
   Last reconfirmed|2013-11-05 00:00:00         |2018-2-27

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Warning-free testcase:

class base {
private:
    void foo() { }
};

template <typename T>
struct bar : public base {
    void test() {
        (void) &base::foo;  // should be rejected
    }
};

template <>
struct bar<void> : public base {
    void test() {
        // &base::foo;  // correctly rejected
    }
};

int main() {
    bar<int>().test();
    bar<void>().test();
}

Still accepted by trunk.


Clang says:

58993.cc:9:23: error: 'foo' is a private member of 'base'
        (void) &base::foo;  // should be rejected
                      ^
58993.cc:3:10: note: declared private here
    void foo() { }
         ^
1 error generated.


and EDG says:

"58993.cc", line 9: error: function "base::foo" (declared at line 3) is
          inaccessible
          (void) &base::foo;  // should be rejected
                        ^
          detected during instantiation of "void bar<T>::test() [with T=int]"
                    at line 21

1 error detected in the compilation of "58993.cc".