Re: -isystem and C++ headers

[Matt Austern <austern at apple dot com>]

On May 11, 2004, at 4:46 PM, Zack Weinberg wrote:

> Daniel Jacobowitz <drow@false.org> writes:
>
> > c-opts.c says this:
> >
> >     case OPT_isystem:
> >       add_path (xstrdup (arg), SYSTEM, 0);
> >       break;
> >
> > Is there a particular reason the third argument, cxx_aware, is not 
> > set?
> > This means that anything included via -isystem will be marked with 
> > extern
> > "C" by g++.
>
> Show of hands please: Who needs this implicit-extern-C crap anymore?

Darwin still does.  I hope it won't for much longer.

The biggest issue for this getting fixed in Darwin, actually, is 
convincing ourselves that it has been fixed.  There are *many* headers, 
and it's impractical to hand-inspect every one to prove that it's 
C++-safe.  So far we haven't come up with an automated way of checking 
headers.  Suggestions would be welcome.

			--Matt