From: Tom Howard (tomhoward_at_[hidden])
Date: 2002-08-20 10:21:44
> > > gcc fails to compile following code:
> > >
> > > // ****************** start ******************
> > > template<typename FPT, typename ToleranceSource>
> > > inline bool
> > > compare_and_continue_impl( FPT left, FPT right, ToleranceSource
> > > tolerance_src )
> > > {
> > > close_at_tolerance<FPT> pred( tolerance_src );
> > > }
> > > // ****************** end ******************
> > >
> > > Here an error:
> > > a.cpp: In function `bool compare_and_continue_impl(FPT, FPT,
> > > ToleranceSource)':
> > > a.cpp:6: parse error before `>' token
> > >
> > > Does it correct?
> >
> > "Is it correct?" Quite possibly. If that's the whole translation unit,
>
> then
>
> > yes, it's quite correct. There's no definition for close_at_tolerance.
>
> But compare_and_continue_impl is not called. and should not be instantiated
> accordingly, isn't it?
I'm pretty new to boost and I haven't don't a lot of template programming. I
might be completely wrong but replacing
close_at_tolerance<FPT> pred( tolerance_src );
with
template close_at_tolerance<FPT> pred( tolerance_src );
may solve the problem. I remember coming across a very similar problem in
code I was working on a few months ago and I think this is how I solved it.
I might be completely wrong
>From my understanding, gcc isn't actually instatiating the
compare_and_continue_impl template, it's just in the process of parsing the
code itself when it produces the parse error.
Hope the above helps.
Cheers,
Tom Howard