Conference turris::c_plus_plus

3597.0. "template" by BARNA::DSMAIL () Tue Jun 03 1997 11:01

  Hi people:

  I have a customer that tries to compile with C++.
  Files are below described.
  Problem is described below.

  Helps are welcome
  
  Thanks in advanced 


*******************************************
file pru.cc
******************************************

#include "pru.hh"

int main()
{
	Asociacion<int, int> a;
}


********************************************
file pru.cxx

********************************************
// -------

template<class T>
Lista<T>::Lista()
{
}

template<class T>
Lista<T>::~Lista()
{
}

// -------

template<class T1, class T2>
Vinculo2<T1, T2>::Vinculo2()
{
}

template<class T1, class T2>
Vinculo2<T1, T2>::~Vinculo2()
{
}

// -------

template<class T1, class T2>
Asociacion<T1, T2>::Asociacion()
{
}

template<class T1, class T2>
Asociacion<T1, T2>::~Asociacion()
{
}


***************************************
file pru.hh 
***************************************

#ifndef _PRU_
#define _PRU_

template<class T>
class Lista
{
	private:
		T _data;

	public:
		Lista();
		~Lista();
};

template<class T1, class T2>
class Vinculo2
{
	private:
		T1 _data1;
		T1 _data2;

	public:
		Vinculo2();
		~Vinculo2();
};

template<class T1, class T2>
class Asociacion
{
	private:

/*
****************	Code gets problem ******************************
*/
		Lista<Vinculo2<T1, T2> *> _data;

/*
*****************        If replaces following sentence ******************	

		Lista<Vinculo2<T1, T2> *> _data;

**************************       by this **********************************	

		Lista<Vinculo2<T1, T2> > _data;

*****************************	no problem *********************************
*/

	public:

		Asociacion();
		~Asociacion();
};

#include "pru.cxx"

#endif



OSF1 dirak V4.0 564 alpha
cxx  (cxx)
DEC C++ V5.5-004 on Digital UNIX (Alpha)

# cxx -o test pru.cc         
cxx: Error: ./cxx_repository/Lista__TP13Vinculo2__Tii.cxx, line 2: In this declaration, "Vinculo2" does not name a type.
typedef Lista<Vinculo2* > __dummy_;
--------------^
ld:
Unresolved:
Lista<Vinculo2<int, int>*>::Lista<Vinculo2<int, int>*>(void)
Lista<Vinculo2<int, int>*>::~Lista<Vinculo2<int, int>*>(void)

    

Thanks for your report.
I have reproduced your problem with DEC C++ V5.5-004, and comfirmed
that it has been fixed in our V5.6 DEC C++ compiler.

    
    	Thanks Kao.
    
    	Sorry,I have another question that customer asks me.
        
        Customer says that when uses a compiler gnu ++ in a pc 
        is more fast that in ALPHA system with UNIX.
    
        is there any option of compiler to increase performance?
        or any program to debug?
    
        Thanks in advanced
    
        Francesc
       
    

There are too many elements that have to be considered.
Generally, a pc is a single user environment, it functions differently from
a multi-users environment.
Please sent us a test case with the performance data you have, and we'll 
be glad to look into it and see if there is any thing that we or you can do.

Shi-Jung