Subject: Re: [boost] [variant] Heads-up!
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2019-04-29 18:51:56
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://listarchives.boost.org/Archives/boost/2013/02/200744.php
In Christ,
Steven Watanabe