From: "David C. Hoos, Sr." <david.c.hoos.sr@ada95.com>
Subject: Re: Representation question (void *)
Date: 1999/11/16
Date: 1999-11-16T00:00:00+00:00 [thread overview]
Message-ID: <80t8er$23g$1@birch.prod.itd.earthlink.net> (raw)
In-Reply-To: 7E47A2C771ADD211AD3C00A0C960172D01269B57@ISCPORTSEX
Lipscomb, Kevin <KLipscomb@C2CEN.USCG.mil> wrote in message
news:7E47A2C771ADD211AD3C00A0C960172D01269B57@ISCPORTSEX...
> How would one represent the following C declaration in Ada 95?
>
> void *data;
>
> Is this just a placeholder for a pointer that should never be referenced?
>
No. A variable or function argument of type pointer to void means it can be
a pointer to an object of any type -- maybe the ultimate in type unsafeness.
As the return type of a function void (without the asterisk) means
a function that returns nothing -- the c equivalent of an Ada procedure.
void *some_function_name means that like the variable or function argument
case, the value returned by the function can point to any type of data.
next prev parent reply other threads:[~1999-11-16 0:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
1999-11-16 0:00 Representation question (void *) Lipscomb, Kevin
1999-11-16 0:00 ` David C. Hoos, Sr. [this message]
1999-11-17 0:00 ` Ehud Lamm
1999-11-16 0:00 ` Keith Thompson
1999-11-17 0:00 ` tmoran
1999-11-17 0:00 ` Matthew Heaney
1999-11-17 0:00 ` Robert Dewar
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