Re: [boost] [variant] Heads-up!

On Thu, May 2, 2019 at 12:36 AM Antony Polukhin via Boost < boost@lists.boost.org> wrote:

On Mon, Apr 29, 2019, 20:30 Antony Polukhin wrote:

...

Hi,

I've merged a very cool optimization by Nikita Kniazev into the master branch. From now on boost::variant does pointer stealing for recursive variants.

This significantly improves the performance of the variants move constructors.

However if you use a variant variable after the std::move for anything except destruction and assignment then you're getting an UB. Beware!

Reverted in develop. Master will be reverted soon.

Thank you!