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.