Richard Levitte - VMS Whacker wrote:
> The easiest way to avoid the conversions noted above is to have a
> union like this:
>
> union foo {
> void *simple;
> int (*fn)();
> };
>
> and use it internally. You put whatever char * you want to convert to
> a functino pointer into simple and pull out the function pointer from
> fn, and vice versa.
That assumes that the conversion the compiler is attempting to prevent
can actually be done, which is not, of course, a valid assumption. The
only way to do this validly is to make the functions actually take a foo
* as their argument, surely? And yes, then you may end up with a memory
management problem (though often not, coz I'll bet in most cases you can
make the foo static).
Cheers,
Ben.
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