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[Caml-list] void/unit in C calls
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Date: 2004-02-20 (19:44)
From: Shawn Wagner <shawnw@s...>
Subject: Re: [Caml-list] void/unit in C calls
On Fri, Feb 20, 2004 at 02:26:05PM -0500, Michael Furr wrote:
> I realize this is somewhat of a pedantic question but, what is the proper
> prototype for a C function which has a parameter of type unit?
> ie:
>  external foo : unit -> unit = "foo_c"
> should foo_c be declared
>  void foo_c(void);
> or
>  value foo_c(value);

This one.

> Would it ever cause a problem on any architecture if one used the wrong
> form?

Yup. I've had problems with the bytecode runtime not liking C functions that
don't return anything when they should be returning a Val_unit.

Shawn Wagner

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