C++ PATCH: PR 20599 (1/3)

[Richard Guenther]

On 9/14/06, Douglas Gregor <doug.gregor@gmail.com> wrote:
> This patch addresses PR c++/20599 by introducing support for variadic
> templates:
>
>         http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20599
>
> Several of the facilities in the C++ Library TR1 just can't be
> implemented well without variadic templates. Our current
> implementation uses some disgusting, barely-maintainable preprocessor
> metaprogramming to give a poor approximation of these libraries.
> Variadic templates will help us improve compile times, simplify the
> code, and provide a more flexible TR1 implementation than any other
> compiler can.

I think to get this into the 4.3 release (which will probably happen
before C++-0x happens) you need to add a standards variant that
is default-off, so the 0x features can be enabled by something like
-std=c++-0x

Also it would be nice to have this (and patches for rvalue references
and concepts) on a branch together with possibly pending library
work to give people an easier way to play with the new features.

Thanks for all this work!
Richard.