Thanks for the links, but I don't see any discussion of this particular idea there. Instead, they're discussing allocating the value on the heap or doubling the buffer.

вт, 28 окт. 2025 г. в 19:24, Bjorn Reese via Std-Proposals <std-proposals@lists.isocpp.org>:
On 10/28/25 15:07, Giuseppe D'Angelo via Std-Proposals wrote:

> This was extensively discussed. You may also want to read about the
> design of Boost.Variant2.
> https://www.boost.org/doc/libs/latest/libs/variant2/doc/html/variant2.html#design_rationale

And https://wg21.link/P0308

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