Re: [Boost-users] [lexical_cast][1.33.0] Changed behavior from 1.32.0?

From: Doug Gregor (dgregor_at_[hidden])
Date: 2005-11-18 16:41:30

On Nov 18, 2005, at 4:00 PM, john.wismar_at_[hidden] wrote:

>
> We've noticed some changed behavior in a module that's using 
> lexical_cast, having gone from 1.32.0 to 1.33.0.  I tracked it down to 
> this change:
> [snip
> It turns out that we are passing a string containing a number with a 
> trailing space.  The 1.32.0 version of lexical_cast did not mind the 
> trailing space, but the 1.33.0 version throws a bad_lexical_cast 
> exception.  I found that if I change this:
>                        stream.get() ==
> to this:
>                        (stream >> std::ws).get() ==
>
> that my issue goes away, but the workaround for compilers without the 
> eof() function still works....  Would it be possilbe to add this into 
> 1.34.0, or is this undesirable behavior?

This looks like a reasonably change to me; I hope that someone more 
involved in lexical_cast<> can give us more information, either 
rationale for the 1.33.0 behavior or confirmation that this is a bug. 
If it is a change that needs to be made, we'll put it in 1.33.1.

        Doug