--- ray/src/px/protate.c	1989/09/12 13:04:27	1.2
+++ ray/src/px/protate.c	1990/01/18 23:58:15	1.3
@@ -86,7 +86,8 @@ FILE	*fp;
 				exit(1);
 			}
 			for (inx = 0; inx < nrows && xoff+inx < xres; inx++)
-				bcopy(inline[xoff+inx], scanbar[inx*yres+iny],
+				bcopy((char *)inline[xoff+inx],
+						(char *)scanbar[inx*yres+iny],
 						sizeof(COLR));
 		}
 		for (inx = 0; inx < nrows && xoff+inx < xres; inx++)