Re: C++17

[Murray Cumming <murrayc murrayc com>]

On Thu, 2018-04-12 at 21:10 +0100, Jonathan Wakely wrote:
> On 12 April 2018 at 21:02, Murray Cumming wrote:
> > I've just released a version of libsigc++-3.0 (currently unstable)
> > that
> > requires C++17. This means that gtkmm-4.0 (currently unstable)
> > requires
> > C++17 too. I should have mentioned it first, but I think this is
> > fine.
>
> What are you using from C++17?

Nothing major. Just some constexpr if, std::apply() and std::invoke():
https://github.com/libsigcplusplus/libsigcplusplus/commits/master

> GCC's C++17 implementation is not stable yet, so there are still ABI
> changes possible between GCC 8 and GCC 9.
>
> IIRC we've already introduced some (minor) incompatibilities between
> the std::variant in GCC 7 and GCC 8.

gtkmm-4.0 is itself unstable, so that's not a problem. And I see no 
sign that GTK+ 4.0 will become stable any time soon.

-- 
Murray Cumming
murrayc murrayc com
www.murrayc.com