Use libc MAX() and MIN()

glibc, musl, FreeBSD, and OpenBSD define the MAX() and MIN()
macros in <sys/param.h> with the same definition that we use.
Let's not redefine it here and use the system one, as it's
effectively the same as we define (modulo whitespace).

See:

shadow (previously):

alx@asus5775:~/src/shadow/shadow$ grepc -ktm MAX
./lib/defines.h:318:#define MAX(x,y) (((x) > (y)) ? (x) : (y))

glibc:

alx@asus5775:~/src/gnu/glibc$ grepc -ktm -x 'sys/param.h$' MAX
./misc/sys/param.h:103:#define MAX(a,b) (((a)>(b))?(a):(b))

musl:

alx@asus5775:~/src/musl/musl$ grepc -ktm -x 'sys/param.h$' MAX
./include/sys/param.h:19:#define MAX(a,b) (((a)>(b))?(a):(b))

OpenBSD:

alx@asus5775:~/src/bsd/openbsd/src$ grepc -ktm -x 'sys/param.h$' MAX
./sys/sys/param.h:193:#define	MAX(a,b) (((a)>(b))?(a):(b))

FreeBSD:

alx@asus5775:~/src/bsd/freebsd/freebsd-src$ grepc -ktm -x 'sys/param.h$' MAX
./sys/sys/param.h:333:#define	MAX(a,b) (((a)>(b))?(a):(b))

Signed-off-by: Alejandro Colomar <alx@kernel.org>
This commit is contained in:
Alejandro Colomar 2022-09-28 23:19:37 +02:00 committed by Serge Hallyn
parent 0d9799de04
commit 3dc1754e50
2 changed files with 1 additions and 8 deletions

View File

@ -310,14 +310,6 @@ extern char *strerror ();
# define format_attr(type, index, check)
#endif
/* ! Arguments evaluated twice ! */
#ifndef MIN
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
#endif
#ifndef MAX
#define MAX(x,y) (((x) > (y)) ? (x) : (y))
#endif
/* Maximum length of usernames */
#ifdef HAVE_UTMPX_H
# include <utmpx.h>

View File

@ -19,6 +19,7 @@
#endif
#include <assert.h>
#include <sys/param.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>