Re: [PATCH] Generic dead function optimisation

From: Martin Mares (mj@suse.cz)
Date: Tue Apr 25 2000 - 07:51:59 EST

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Hello!

> Not only that, it violates longstanding C semantics.
>
> "static" => "can not be referenced outside this compilation unit"
> "EXPORT_SYMBOL" => "can be referenced outside this compilation unit"

If "referenced" means "referenced by its name" and not "called", then
yes. But the EXPORT_SYMBOL case is equivalent to making a non-static
data structure contain a pointer to your static function which is
perfectly normal C. For example:

        static void f(void)
        {
        }

void (*pf)(void) = f;

and then (in another compilation unit)

pf();

is obviously correct.

Have a nice fortnight

-- Martin `MJ' Mares <mj@ucw.cz> <mj@suse.cz> http://atrey.karlin.mff.cuni.cz/~mj/ "ADA -- A Dumb Acronym"

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