From: Alejandro Colomar <alx@kernel.org>
Date: Thu, 22 Dec 2022 12:51:20 +0000 (+0100)
Subject: Add NITEMS(arr) to get the number of elements of an array
X-Git-Tag: 4.14.0-rc1~239
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=eb164165f66e5785f5a5f8e0af650f4ff5d9ae95;p=thirdparty%2Fshadow.git

Add NITEMS(arr) to get the number of elements of an array

Signed-off-by: Alejandro Colomar <alx@kernel.org>
---

diff --git a/lib/defines.h b/lib/defines.h
index b2185793f..1a25e5807 100644
--- a/lib/defines.h
+++ b/lib/defines.h
@@ -171,6 +171,8 @@ static inline void memzero(void *ptr, size_t size)
 #define SCALE DAY
 #endif
 
+#define NITEMS(arr)  (sizeof((arr)) / sizeof((arr)[0]))
+
 /* Copy string pointed by B to array A with size checking.  It was originally
    in lmain.c but is _very_ useful elsewhere.  Some setuid root programs with
    very sloppy coding used to assume that BUFSIZ will always be enough...  */