Re: [Boost-Users] Another bug in boost.lexical_cast 1.30

From: Terje Slettebų (tslettebo_at_[hidden])
Date: 2003-03-28 21:08:15

>From: "Black Ice" <yg-boost-users_at_[hidden]>

> lexical_cast.hpp line 145:
>             bool operator<<(const Source &input)
>             {
>                 return stream << input;
>             }
> Convert basic_stringstream & to bool?

Yes. :)

basic_stringstream has a user-defined conversion to void *, which then
converts to bool, giving the stream state. It has been suggested on the
Boost list to change this to a more explicit test, though (also to remove a
warning for this conversion), such as:

            bool operator<<(const Source &input)
            {
                return !(stream << input).fail();
            }

Regards,

Terje