Appears to be 16 bytes on Windows (larger of the two variants): https://github.com/rust-lang/rust/blob/master/library/std/src/sys/windows/c.rs#L598 https://gith

Appears to be 16 bytes on Windows (larger of the two variants): https://github.com/rust-lang/rust/blob/master/library/std/src/sys/windows/c.rs#L598 https://github.com/rust-lang/rust/blob/master/library/std/sr...