--- Libc/Libc-1725.40.4/include/_ctermid.h
+++ Libc/Libc-1698.140.3/include/_ctermid.h
@@ -27,15 +27,13 @@
 #include <sys/cdefs.h>
 #include <_bounds.h>
 
-#ifndef _LIBC_COUNT__L_CTERMID
-#define _LIBC_COUNT__L_CTERMID _LIBC_UNSAFE_INDEXABLE
-#endif /* _LIBC_COUNT__L_CTERMID */
-
 _LIBC_SINGLE_BY_DEFAULT()
 
 __BEGIN_DECLS
 
-char *_LIBC_CSTR	ctermid(char *_LIBC_COUNT__L_CTERMID);
+#define	L_ctermid	1024	/* size for ctermid(); PATH_MAX */
+
+char *_LIBC_CSTR	ctermid(char *_LIBC_COUNT_OR_NULL(L_ctermid));
 
 __END_DECLS