--- src/memsize.c.~1~	Sat Nov 11 10:42:42 1995
+++ src/memsize.c	Sun Mar  1 00:24:59 1998
@@ -10,6 +10,7 @@
  */
 char	*id = "$Id: patch-af,v 1.1 1998/03/01 08:28:36 marc Exp $\n";
 
+#include <stdlib.h>
 #include "timing.c"
 
 #define	CHK(x)	if ((x) == -1) { perror("x"); exit(1); }