--- bc-1.06/lib/number.c.orig	2000-10-03 22:34:25 +0400
+++ bc-1.06/lib/number.c	2005-10-23 22:31:41 +0400
@@ -34,6 +34,7 @@
 #include <number.h>
 #include <assert.h>
 #include <stdlib.h>
+#include <string.h>
 #include <ctype.h>/* Prototypes needed for external utility routines. */
 
 #define bc_rt_warn rt_warn