Re: pfCylAroundSegs API

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Lance R. Marrou (marrou++at++vsl.ist.ucf.edu)
Thu, 22 Dec 1994 09:50:52 -0500 (EST)

On Thu, 22 Dec 1994 lelkins++at++relay.nswc.navy.mil wrote:

...
> The man page for pfCylAroundSegs says that it has the following prototype:
>
> void pfCylAroundSegs(pfCylinder *dst, pfSeg **segs, long nseg);

However, the actual prototype is:

extern void pfCylAroundSegs(pfCylinder* _dst,
                                const pfSeg** _segs, long _nseg);

...
>
> What am I missing? Probably something horribly simple in the typecasting,
> but I'm at a loss to see it at the moment.
...

Not horribly simple at all. The following will work though:
    pfCylAroundSegs(&dst, (const pfSeg**)&(vol_segset.segs), cursegment);

I think the problem lies in the cc compiler. You can use (correctly) a
simple typecast of (pfSeg **), ignoring the const declaration if you
compile with CC. With cc, you need the const. Either way, you need the
pfSeg**.

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