Re: [boost] [bind] Error C4430 in bind.hpp

Subject: Re: [boost] [bind] Error C4430 in bind.hpp
From: Robert Dailey (rcdailey_at_[hidden])
Date: 2012-03-15 16:27:45

On Thu, Mar 15, 2012 at 3:16 PM, Darren Garvey <darren.garvey_at_[hidden]>wrote:

> On 15 March 2012 12:22, Robert Dailey <rcdailey_at_[hidden]> wrote:
>
> > On Thu, Mar 15, 2012 at 11:06 AM, Darren Garvey <darren.garvey_at_[hidden]
> > >wrote:
> >
> > > On 15 March 2012 11:59, Robert Dailey <rcdailey_at_[hidden]> wrote:
> > >
> > > > On Thu, Mar 15, 2012 at 9:25 AM, Lars Viklund <zao_at_[hidden]>
> wrote:
> > > >
> > > > > On Thu, Mar 15, 2012 at 08:25:54AM -0500, Robert Dailey wrote:
> > > > > > >> For some reason when I include <boost/bind.hpp> I get the
> > > following
> > > > > > >> errors:
> > > > > > >>
> > > > > > >>
> > > > >
> > > >
> > >
> >
> 1>c:\code\work\cmake-mds\build-vc9\third_party\boost\1.48.0\include\boost\bind\bind.hpp(1200)
> > > > > > >> : error C4430: missing type specifier - int assumed. Note: C++
> > > does
> > > > > not
> > > > > > >> support default-int
> > > >
> > > > > [snip]
> > > > >
> > > > > > >>
> > > > > > >> They point to this code in bind.hpp:
> > > > > > >>
> > > > > > >> BOOST_BIND_OPERATOR( ==, equal )
> > > > >
> > > > > [snip]
> > > >
> > > > Thanks for the help. I generated a preprocessed file for this
> > translation
> > > > unit (the one including bind.hpp) and I see the following generated
> > code:
> > > >
> > > > struct equal { template<class V, class > bool operator()(V const & v,
> > > >  const & w) const { return v == w; } }; template<class R, class F,
> > class
> > > L,
> > > > class A2> bind_t< bool, equal, list2< bind_t<R, F, L>, typename
> > > > add_value<A2>::type > > operator == (bind_t<R, F, L> const & f, A2
> a2)
> > {
> > > > typedef typename add_value<A2>::type B2; typedef list2< bind_t<R, F,
> > L>,
> > > > B2> list_type; return bind_t<bool, equal, list_type> ( equal(),
> > > > list_type(f, a2) ); }
> > > >
> > >
> > > Seems like the upper-case 'W' character is not being expanded properly.
> > I'm
> > > assuming you don't have anything crazy in your code base that defines
> 'W'
> > > to be nothing?
> >
> >
> > Oh man, good find. We are using the IBM Lotus Notes API and it defines W
> to
> > signify that we are on Windows. Kinda silly... I guess I'll #undef it for
> > now. Really annoying though. Maybe in a future update to boost the
> template
> > parameters could be given more unique names? Not that this is really
> > boost's problem :)
> >
>
> Better still, the standard could say that single characters shall not be
> macro defines. Common sense does already!
>
> Ah, the good old Notes API (or in fact anything Lotus Notes) - what a
> disaster. I once wrote a thin Boost.Python wrapper over most of the Notes
> C++ API; I laid it to rest on sourceforge (
> http://sourceforge.net/projects/notespy/) if you'd prefer to have a less
> painful interface to use. :)

+1 to your Python wrapper, that seems extremely useful. However, I have bad
news for you: They've deprecated the C++ Notes API and now only update the
C API. What a way to take a step backwards, eh?