Use unions to represent unions

[Invisible-Rabbit-Hunter]

As rust has unions since 1.19, shouldn't the API use them, instead of structs?

[retep998]

winapi 0.3 supports Rust 1.6 and therefore is unable to use the newer union language feature. winapi 0.4 will upgrade the minimum Rust version and take advantage of new language features such as that.

[MSxDOS]

winapi 0.4 will upgrade the minimum Rust version and take advantage of new language features such as that.

Can't wait, but that's not happening any time soon, am I right? It will take awhile for even untagged unions to reach stable Rust.

[Eh2406]

They are stable in 1.19

[MSxDOS]

Hmm, I mistook it for unions with non-Copy field then which currently require #![feature(untagged_unions)]

[retep998]

Everything in winapi is Copy so that's not a blocker.

[benpye]

@retep998 Is there a timeline for 0.4 as unions have been in for some time now, nearly 2 years...

[MSxDOS]

There are\were other blockers for 0.4 like procedural macros and const fn, and if rust-lang/rust#58713 is one of them then we may as well have to wait for another 2 years.