--- ray/src/px/pcompos.c	2003/06/05 19:29:34	2.22
+++ ray/src/px/pcompos.c	2003/10/27 10:24:51	2.25
@@ -1,5 +1,5 @@
 #ifndef lint
-static const char	RCSid[] = "$Id: pcompos.c,v 2.22 2003/06/05 19:29:34 schorsch Exp $";
+static const char	RCSid[] = "$Id: pcompos.c,v 2.25 2003/10/27 10:24:51 schorsch Exp $";
 #endif
 /*
  *  pcompos.c - program to composite pictures.
@@ -10,10 +10,12 @@ static const char	RCSid[] = "$Id: pcompos.c,v 2.22 200
 #include  <stdio.h>
 #include  <math.h>
 #include  <time.h>
+#include  <string.h>
 
 #include "copyright.h"
 
 #include  "platform.h"
+#include  "rtprocess.h"
 #include  "color.h"
 #include  "resolu.h"
 
@@ -380,7 +382,7 @@ register COLR  c1, c2;
 
 	j = 4;				/* check exponents first! */
 	while (j--)
-		if (i = c1[j] - c2[j])
+		if ( (i = c1[j] - c2[j]) )
 			return(i);
 	return(0);
 }