Problem with time_period

From: Alejandro Escalante Medina alejandro_escalante_medina_at_[hidden])
Date: 2003-02-26 19:55:40

The following simple code doesn't compile:

----------------------------------------------
#define DATE_TIME_INLINE

#include <boost/date_time/gregorian/gregorian.hpp>
#include <boost/date_time/posix_time/posix_time.hpp>

using namespace boost;
using namespace boost::posix_time; 
using namespace boost::gregorian; 

...

time_period p(ptime(date(2003, 03, 25)), ptime(date(2003, 04, 
25)));    
date_duration duration(days(1));
p.shift(duration);
----------------------------------------------------

the compiler (VC++ 7.0) gives the following:

 error C2664: 'boost::date_time::period<class 
boost::posix_time::ptime,class 
boost::posix_time::time_duration>::shift' : cannot convert parameter 
1 from 'boost::gregorian::date_duration' to 'const 
boost::posix_time::time_duration &'
        Reason: cannot convert from 'boost::gregorian::date_duration' 
to 'const boost::posix_time::time_duration'
        No constructor could take the source type, or constructor 
overload resolution was ambiguous

I think this should work out of the box, since I've been doing lots 
of other things with date_time and they work fine.

Any ideas?

Thanks in advance,
Alex