Re: [Boost-users] Date-Time gregorian::date construction question

From: Jeff Garland (jeff_at_[hidden])
Date: 2005-01-26 22:37:43

On Wed, 26 Jan 2005 17:20:40 +0100, Wolfgang Fertsak wrote
> If a date object is constructed from an invalid date(e.g. Feb 29th, 
> 2005) and the values are specified in the constructor, an exception 
> is thrown. If the object is constructed from a string representation 
> with from_string(), no exception is thrown and the object has the 
> next valid date (in this case Mar 1st, 2005).
> 
> Is this a bug or a feature?

That would be a bug.  Note that the only invalid dates that will do this are
non-leap year Feb 29 dates.  That is, strDate("2005-02-30") will throw the
exception.  

I'm afraid I can't check in a fix just at the moment, but it's a one line fix
if you want to patch it:

Change line 146 of boost/date_time/date_parsing.hpp from 

<       return date_type(ymd);

to

>       return date_type(ymd.year, ymd.month, ymd.day);

With this change you'll get the exception for the feb 29th's as well.  Thanks
for the report.

Jeff