https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98660
--- Comment #2 from Gašper Ažman <gasper.azman at gmail dot com> --- Ivan: indeed, you could use a static cast, or a macro - you're literally just changing the value category of the expression to its original one. The cast is safe. The reason Niebler and friends (including me) are using the c-style cast is purely because it's short, concise, unambiguous, and fast to compile. `static_cast<decltype(x)>(x)` is a lot longer than `(T&&)x`. When you have 6 or 10 of these expressions (often with `...`s) in a function declaration (please see the `tag_invoke` definition linked), the noise starts to matter.
