🚀 go-pugleaf

// gcc -Woverloaded-virtual issues
// y.cc:29: conflicting specification deriving virtual function `void  curspage::home ()'
// y.cc:55: no `home' member function declared in class
// which is not true.
// This error is dependent on the sequence of the declarations, see comment
// below at >>>>>
extern "C"
{
#include <stdio.h>
}

class listpage
{
public:
	virtual	~listpage();
};

class Mondisp
{
public:
	virtual	~Mondisp();
	virtual	void home(int);
};

// >>>> Moving this declaration above Mondisp makes the error disappear.
class curspage : public listpage
{
public:
	virtual void home();
};

class Cursdisp : public Mondisp
{
public:		
	virtual void home(int);
};

listpage::~listpage() {}
Mondisp::~Mondisp() {}

void
Mondisp::home(int i)
{
	printf("Mondisp %d\n", i);
}

void
Cursdisp::home(int i)
{
	printf("Cursdisp %d\n", i);
}

void
curspage::home()
{
	printf("curspage\n");
}

main()
{
	curspage c;
	Mondisp M;
	Cursdisp C;

	c.home();
	M.home(1);
	C.home(2);
}
// Peter Schauer			pes@regent.e-technik.tu-muenchen.de