gcc-3.3 issues

[LLeweLLyn Reese]

"Jacques A. Vidrine" <nectar at freebsd.org> writes:

> [For some reason I haven't seen Alexander's post yet, so I'm mixing
>  replies here.]
> 
> On Fri, Jul 18, 2003 at 06:12:10PM +0200, Michael Nottebrock wrote:
> > On Friday 18 July 2003 17:37, Alexander Kabaev wrote:
> > > On Fri, 18 Jul 2003 10:33:58 -0500
> > >
> > > "Jacques A. Vidrine" <nectar at FreeBSD.org> wrote:
> > > > I also recall lots of missing `typename's in the system headers that
> > > > were resolved in the actual GCC distribution.
> > > >
> > > > Alexander, do the STL headers et. al. get updated with the rest of the
> > > > compiler chain?
> > >
> > > Yes. But libstdc++ itself lags a bit behind GCC features. The reason why
> > > GCC ports are not reporting any errors is because by default GCC
> > > suppresses warnings from system headers, and C++ headers are considered
> > > system. We disable this suppression in imported compiler.
[snip]

Curiosity: Why does this suppression get disabled in the imported compiler?