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 12:22:58

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 :)

Thanks for the help!