In Chapter 12 of the O'Reilly book on Ocaml, section "Creating and modifying
Objective CAML values from C", this example code is given for wrapping a
heap-allocated chunk of memory in an Ocaml value:

value create (value s)
{
  value block ;
  block = alloc_final (2, finalize_it,Int_val(s)*sizeof(IntTab),100000) ;
  Field(block,1) = (value) alloc_it(Int_val(s)) ;
  return block ;
}

This code uses a "value" local, but doesn't declare it with one of the
CAMLlocalN variables, as the Ocaml Manual says is necessary (Ocaml Manual,
"Interfacing C with Objective Caml", Section 18.5.1, Rule 2). Is this code
above correct?

Thanks in advance,

Neil

P.S. I'm aware that custom blocks are now available, but alloc_final does
everything I need...

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