Macro memoffset::raw_field_union
source · macro_rules! raw_field_union { ($base:expr, $parent:path, $field:tt) => { ... }; }
Expand description
Computes a const raw pointer to the given field of the given base pointer to the given parent tuple typle.
The base
pointer must not be dangling, but it may point to
uninitialized memory.
§Note
This macro is the same as raw_field
, except for a different Deref-coercion check that
supports unions.
Due to macro_rules limitations, this check will accept structs with a single field as well as unions.
This is not a stable guarantee, and future versions of this crate might fail
on any use of this macro with a struct, without a semver bump.