[commit: packages/unix] master: Fix assumption that RLIM_INFINITY is a simple number (b092e35)

Bryan O'Sullivan bos at serpentine.com
Mon Oct 14 04:07:01 UTC 2013

On Sun, Oct 13, 2013 at 12:20 AM, Herbert Valerio Riedel <hvr at gnu.org>wrote:

> >  unpackRLimit :: CRLim -> ResourceLimit
> >  unpackRLimit (#const RLIM_INFINITY)  = ResourceLimitInfinity
> [...]
> I wonder though, how could that even have compiled in the past on OSX if
> the expanded RLIM_INFINITY macro #define in the LHS pattern wouldn't
> result in a simple number?

You'll want to take a look at what hsc2hs actually does here to really
understand :-)

In short, a constant C-level expression is fine if used in a #const
construct, regardless of it containing embedded casts and whatnot.
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