error: forward declaration of `struct bit::bitObject'

error: forward declaration of `struct bit::bitObject'

[Roel Bindels]

Dear Listers,

I posted this question on the GCC-help list but maybe someone here can give
me some advice on how to proceed also.

I am working on a VC++ to gcc conversion, and I'm facing some problems that
I cannot find the answers for. I'm working on a Windows XP machine with
cygwin installed and as IDE I'm using Ecplipse. The GCC complier I am
working with is:

>gcc (GCC) 3.4.4 (cygming special) (gdc 0.12, using dmd 0.125) Copyright 
>(C) 2004 Free Software Foundation, Inc. This is free software; see the 
>source for copying conditions.  There is NO warranty; not even for 
>MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

I'm getting the error message: error: forward declaration of `struct
bit::bitObject' and I cannot find the problem.

I hope that someone can point me in the correct direction.

With best regards,

Roel Bindels



//--------------------------------------------------------------------------
// Forward declarations
//--------------------------------------------------------------------------

class bitObject;

// Some other classes using proObject
....
....
....

//--------------------------------------------------------------------------
// Class	bitObject
// Base	none
//
// The bitObject base class defines an object that
// can be serialized in an archive
//
//--------------------------------------------------------------------------

class bitObject
{
public:

	// Virtual default destructor for all derived classes
	virtual ~bitObject() {}

	// Read the instance data from the archive and
	// indicate whether successful
	virtual bool Load(bitInputArchive& a_Archive) 
	{ 
		return true;		// No data for base
	}

	// Write the instance data to the archive and
	// indicate whether successful
	virtual bool Store(bitOutputArchive& a_Archive) 
	{ 
		return true;		// No data for base
	}
};

Re: error: forward declaration of `struct bit::bitObject'

[Florian Weimer]

* Roel Bindels:

> I posted this question on the GCC-help list but maybe someone here
> can give me some advice on how to proceed also.

The advice you'll get here is exactly the same: post a small example
which reproduces the error message which troubles you.

(Please continue the discussion on gcc-help; that list is the correct
one.)