visibility20.c

来自「this is a gcc file, you can download it 」· C语言 代码 · 共 37 行

// Build don't link: 
// GROUPS passed visibility
// visibility file
// From: [e-mail] (Douglas Scott)
// Date:     Tue, 10 Aug 93 10:06:33 PDT
// Subject:  G++ 2.4.5 allows access to protected base members
// Message-ID: <[e-mail]>

class Base {
protected:
      void protectedBaseFunction() {} // ERROR - protected
public:
    Base() {}
};


class Derived : public Base {
public:
    Derived() {}
    void noticeThisFunction(Base *);
};


void
Derived::noticeThisFunction(Base *b) {
    b->protectedBaseFunction(); // ARM says this is not allowed// ERROR - .*
                                // since it is not called on 'this'
}

int main() {
    Base b;
    Derived d;
    d.noticeThisFunction(&b);
    printf("gpptest run\n");// ERROR - .*
}