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

AMDG On 4/29/19 11:30 AM, Antony Polukhin via Boost wrote:

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!

We've had this discussion before: https://lists.boost.org/Archives/boost/2013/02/200744.php In Christ, Steven Watanabe