Function nf_struct_new 

#[unsafe(no_mangle)]
pub(crate) unsafe extern "C" fn nf_struct_new(
    ty: &'static TypeDesc,
    fields: *const Slot,
) -> Slot

A struct of type ty whose fields are taken, in order, from fields.

Safety

ty is a struct type and fields points to one slot per field, of the field’s type.