diff -up qhull-2003.1/src/poly.c.qh_gethash qhull-2003.1/src/poly.c

--- qhull-2003.1/src/poly.c.qh_gethash	2004-01-31 04:00:15.000000000 -0700

+++ qhull-2003.1/src/poly.c	2010-02-01 14:07:45.851966800 -0700

@@ -403,6 +403,7 @@ unsigned qh_gethash (int hashsize, setT 

   void **elemp= SETelemaddr_(set, firstindex, void);

   ptr_intT hash = 0, elem;

   int i;

+  unsigned result;

   switch (size-firstindex) {

   case 1:

@@ -441,9 +442,10 @@ unsigned qh_gethash (int hashsize, setT 

     }while(*elemp);

     break;

   }

-  hash %= (ptr_intT) hashsize;

-  /* hash= 0; for debugging purposes */

-  return hash;

+  result= (unsigned)hash;

+  result %= (unsigned)hashsize;

+  /* result= 0; for debugging purposes */

+  return result;

 } /* gethash */

 /*-