declaring routines which return function pointers

[Robert Viduya]

> I have a routine which resembles the following:
> 
> 	int (*f)();
> 	int fa(), fb();
> 
> 	fa() {
> 		f = fb;
> 		return(f);
> 	}
> 
> 	fb() {
> 	}
> 
> The problem with the above is that lint complains about an illegal combin-
> ation of a pointer with an integer in the 'return' statement.  I have tried
> various casts and function declarations to try to satisfy lint, but none of
> them have worked.  Does anybody know what I should do to keep lint happy?
> 

I played around with the code for about 30 minutes and the only thing I
accomplished was to make lint core dump twice.  I only see one way of
doing it and C apparently doesn't support it.  That way is to declare
fa() as:

    int ((*fa)())();

This is broken down from:

    int  (*x)();	/* x is a pointer to a function returning an int */
    int ((*y)())();	/* y is function returning a ptr to a func returning an int */

However, both lint and cc complain with 'function returns illegal type'.

May I suggest using casts?

				robert
-- 
Robert Viduya
Office of Computing Services
Georgia Institute of Technology, Atlanta GA 30332
Phone:  (404) 894-4669

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