--- ray/src/rt/srcobstr.c	2011/02/14 20:13:38	2.16
+++ ray/src/rt/srcobstr.c	2013/08/07 05:10:09	2.17
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char RCSid[] = "$Id: srcobstr.c,v 2.16 2011/02/14 20:13:38 greg Exp $";
+static const char RCSid[] = "$Id: srcobstr.c,v 2.17 2013/08/07 05:10:09 greg Exp $";
 #endif
 /*
  * Source occlusion caching routines
@@ -63,7 +63,7 @@ initobscache(int sn)
 	FVECT		rorg, rdir;
 	RREAL		d;
 	int		i, j, k;
-	int		ax, ax1, ax2;
+	int		ax=0, ax1=1, ax2=2;
 
 	if (srcp->sflags & (SSKIP|SPROX|SSPOT|SVIRTUAL))
 		return;			/* don't cache these */
@@ -200,7 +200,7 @@ srcobstructp(register RAY *r)
 		initobscache(r->rsrc);
 					/* compute cache index */
 	if (srcp->sflags & SDISTANT) {
-		int     ax, ax1, ax2;
+		int     ax=0, ax1=1, ax2=2;
 		double  t;
 		ax = srcp->obscache->p.d.ax;
 		if ((ax1 = ax+1) >= 3) ax1 -= 3;