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[Caml-list] Question about register_global_root
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Date: -- (:)
From: Harry Chomsky <harry@c...>
Subject: Re: [Caml-list] Question about register_global_root
Damien Doligez wrote:
> On Sunday, June 1, 2003, at 12:50 PM, Maas-Maarten Zeeman wrote:
> > The manual explicitly tells that register_global_root should be called
> > before any valid value is stored in it for the first time, like
> > Val_unit. See Rule 4 of Interfacing C with Objective Caml in the
> > manual.
>
> I'm afraid Chris is right and the manual is wrong.
> [...]
> You must store a valid value before the first allocation that follows
> register_global_root.

I think that both Chris and the manual are right.  The manual actually
instructs the programmer to register a global root v "just before a valid
value is stored in v for the first time".  Key word: "just".  In other
words, as Damien says, no allocations are allowed between registration and
storing a value.

Apparently more than one reader of the manual has missed this detail.  Would
it be clearer to say "immediately before" instead of "just before"?

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