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

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? Best regards, Wolfgang #include <iostream> #include using namespace boost::gregorian; using namespace std; int main() { try { // throws exception date Date1(2005,2,29); string strDate("2005-02-29"); // throws no exception date Date2 = from_string(strDate); // output is 2005-03-01 cout << to_iso_extended_string(Date2) << endl; } catch(std::exception&e) { cout << e.what() << endl; } return 0; }