--- sed-4.0.8/lib/regex_internal.h~	2003-10-14 12:28:56.000000000 -0500
+++ sed-4.0.8/lib/regex_internal.h	2003-12-19 12:08:45.913905000 -0600
@@ -36,6 +36,7 @@
 # include <locale.h>
 #endif
 #if defined HAVE_WCHAR_H || defined _LIBC
+# include <sys/_mbstate_t.h>
 # include <wchar.h>
 #endif /* HAVE_WCHAR_H || _LIBC */
 #if defined HAVE_WCTYPE_H || defined _LIBC