From adb4ef6fb828baea8947d8e2d82c8f5a88b9ba82 Mon Sep 17 00:00:00 2001
From: emaste <emaste@FreeBSD.org>
Date: Tue, 13 Feb 2018 19:17:48 +0000
Subject: [PATCH] libkern: use nul for terminating char rather than 0

Akin to the change made in r188080 for lib/libc/string/.

Reported by:	bde
Sponsored by:	The FreeBSD Foundation
---
 sys/libkern/strcmp.c  | 2 +-
 sys/libkern/strncat.c | 4 ++--
 sys/libkern/strncpy.c | 4 ++--
 sys/libkern/strsep.c  | 6 +++---
 sys/libkern/strstr.c  | 2 +-
 5 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/sys/libkern/strcmp.c b/sys/libkern/strcmp.c
index 2eb2c8232c24..fadbd30779ad 100644
--- a/sys/libkern/strcmp.c
+++ b/sys/libkern/strcmp.c
@@ -44,7 +44,7 @@ int
 strcmp(const char *s1, const char *s2)
 {
 	while (*s1 == *s2++)
-		if (*s1++ == 0)
+		if (*s1++ == '\0')
 			return (0);
 	return (*(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1));
 }
diff --git a/sys/libkern/strncat.c b/sys/libkern/strncat.c
index 95d0ef963bdd..af73248ad5fe 100644
--- a/sys/libkern/strncat.c
+++ b/sys/libkern/strncat.c
@@ -53,11 +53,11 @@ strncat(char *dst, const char *src, size_t n)
 		while (*d != 0)
 			d++;
 		do {
-			if ((*d = *s++) == 0)
+			if ((*d = *s++) == '\0')
 				break;
 			d++;
 		} while (--n != 0);
-		*d = 0;
+		*d = '\0';
 	}
 	return (dst);
 }
diff --git a/sys/libkern/strncpy.c b/sys/libkern/strncpy.c
index db1eafbf8f26..9c73cb69ffcb 100644
--- a/sys/libkern/strncpy.c
+++ b/sys/libkern/strncpy.c
@@ -49,10 +49,10 @@ strncpy(char * __restrict dst, const char * __restrict src, size_t n)
 		const char *s = src;
 
 		do {
-			if ((*d++ = *s++) == 0) {
+			if ((*d++ = *s++) == '\0') {
 				/* NUL pad the remaining n-1 bytes */
 				while (--n != 0)
-					*d++ = 0;
+					*d++ = '\0';
 				break;
 			}
 		} while (--n != 0);
diff --git a/sys/libkern/strsep.c b/sys/libkern/strsep.c
index fcc62a4ddd4f..bf44858c329f 100644
--- a/sys/libkern/strsep.c
+++ b/sys/libkern/strsep.c
@@ -64,14 +64,14 @@ strsep(char **stringp, const char *delim)
 		spanp = delim;
 		do {
 			if ((sc = *spanp++) == c) {
-				if (c == 0)
+				if (c == '\0')
 					s = NULL;
 				else
-					s[-1] = 0;
+					s[-1] = '\0';
 				*stringp = s;
 				return (tok);
 			}
-		} while (sc != 0);
+		} while (sc != '\0');
 	}
 	/* NOTREACHED */
 }
diff --git a/sys/libkern/strstr.c b/sys/libkern/strstr.c
index 1454fbe0c705..4a9bafd1edeb 100644
--- a/sys/libkern/strstr.c
+++ b/sys/libkern/strstr.c
@@ -51,7 +51,7 @@ strstr(const char *s, const char *find)
 		len = strlen(find);
 		do {
 			do {
-				if ((sc = *s++) == 0)
+				if ((sc = *s++) == '\0')
 					return (NULL);
 			} while (sc != c);
 		} while (strncmp(s, find, len) != 0);