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From: labc-1ia@web-3g.berkeley.edu (Andrew M. Choi)
Newsgroups: comp.lang.c
Subject: Static Function Invocation Thru Pointer
Message-ID: <1991Mar3.002250.26164@agate.berkeley.edu>
Date: 3 Mar 91 00:22:50 GMT
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Organization: University of California, Berkeley
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Hi.  This article is about the question of invoking a static
function in another file through the use of pointer to
function.  Please consider the following:

/* In file "foo.c" */

int (*function_pointer)();

static int function()
{
	printf("This is from function\n");
}

setFunctionPointer()
{
	function_pointer = function;
}

/* In file "bar.c" */

main()
{
	extern int (*function_pointer)();

	setFunctionPointer();
	(*function_pointer)();	/* Is this legal?  Note that "function" */
				/* is a static function .. unknown to */
				/* "bar.c" */
}

Personally, I think the above is *ALWAYS* legal (can't think of any
reason why this will fail).  Is this true for all machine
architectures?

I thank you in advance for your help.


Name:  Andrew Choi	Internet Addr:  achoi@cory.berkeley.edu
Tel:   (415)848-5658
#include <std/disclaimer.h>