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

From: john.wismar_at_[hidden]
Date: 2005-12-05 11:16:44

Doug Gregor <dgregor_at_[hidden]> wrote on 11/18/2005 03:41:30 PM:

> 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.

Looks like the change was not made in the RC....

--------------------------------
John Wismar
john.wismar_at_[hidden]