Macro ocaml_interop::ocaml_alloc_tagged_block

macro_rules! ocaml_alloc_tagged_block {
    ($cr:ident, $tag:expr, $($field:ident : $ocaml_typ:ty),+ $(,)?) => { ... };
}

Allocates an OCaml memory block tagged with the specified value.

It is used internally to allocate OCaml variants, its direct use is not recommended.