What I&#39;m trying to do is something like below, except that #ifdef doesn&#39;t really work..<br><br>#ifdef __GLASGOW_HASKELL__<br>import GHC.Prim<br>unsafePtrEq = reallyUnsafePtrEquality#<br>#endif<br><br>#ifdef __HUGS__
<br>import Hugs.IOExts (unsafePtrEq)<br>#endif<br><br>Any help is greated appreciated!<br><br>Regards,<br>Paul Liu<br><br>