diff --git a/lib/libc/gen/nlist.c b/lib/libc/gen/nlist.c
index 9e6d52fc8929..612576257569 100644
--- a/lib/libc/gen/nlist.c
+++ b/lib/libc/gen/nlist.c
@@ -251,7 +251,6 @@ __elf_fdnlist(fd, list)
 	Elf_Ehdr ehdr;
 	char *strtab = NULL;
 	Elf_Shdr *shdr = NULL;
-	Elf_Shdr *sh;
 	Elf_Word shdr_size;
 	void *base;
 	struct stat st;
diff --git a/lib/libc/locale/utf8.c b/lib/libc/locale/utf8.c
index 590bd4334c01..c22d3d6750de 100644
--- a/lib/libc/locale/utf8.c
+++ b/lib/libc/locale/utf8.c
@@ -50,7 +50,7 @@ _UTF8_init(_RuneLocale *rl)
 rune_t
 _UTF8_sgetrune(const char *string, size_t n, const char **result)
 {
-	int ch, len, mask, siglen;
+	int ch, len, mask;
 	rune_t lbound, wch;
 
 	if (n < 1) {
diff --git a/lib/libc/net/ns_name.c b/lib/libc/net/ns_name.c
index ae238b0e8353..5422875cc0c6 100644
--- a/lib/libc/net/ns_name.c
+++ b/lib/libc/net/ns_name.c
@@ -243,7 +243,7 @@ ns_name_unpack(const u_char *msg, const u_char *eom, const u_char *src,
 {
 	const u_char *srcp, *dstlim;
 	u_char *dstp;
-	int n, c, len, checked;
+	int n, len, checked;
 
 	len = -1;
 	checked = 0;
diff --git a/lib/libc/net/ns_ttl.c b/lib/libc/net/ns_ttl.c
index 1ad4cafb19c8..79083b2e618c 100644
--- a/lib/libc/net/ns_ttl.c
+++ b/lib/libc/net/ns_ttl.c
@@ -43,7 +43,7 @@ int
 ns_format_ttl(u_long src, char *dst, size_t dstlen) {
 	char *odst = dst;
 	int secs, mins, hours, days, weeks, x;
-	char tmp[50], *p;
+	char *p;
 
 	secs = src % 60;   src /= 60;
 	mins = src % 60;   src /= 60;
diff --git a/lib/libc/net/rcmd.c b/lib/libc/net/rcmd.c
index fea38879ab9f..fcdd639dfa80 100644
--- a/lib/libc/net/rcmd.c
+++ b/lib/libc/net/rcmd.c
@@ -344,7 +344,7 @@ int
 rresvport_af(alport, family)
 	int *alport, family;
 {
-	int i, s, len, err;
+	int s;
 	struct sockaddr_storage ss;
 	u_short *sport;
 
@@ -609,7 +609,6 @@ __ivaliduser_sa(hostf, raddr, salen, luser, ruser)
 	char hname[MAXHOSTNAMELEN];
 	/* Presumed guilty until proven innocent. */
 	int userok = 0, hostok = 0;
-	int h_error;
 #ifdef YP
 	char *ypdomain;
 
diff --git a/lib/libc/net/res_debug.c b/lib/libc/net/res_debug.c
index 22805aca626e..3481419b5ab1 100644
--- a/lib/libc/net/res_debug.c
+++ b/lib/libc/net/res_debug.c
@@ -205,7 +205,7 @@ fp_query(const u_char *msg, FILE *file) {
 void
 fp_nquery(const u_char *msg, int len, FILE *file) {
 	ns_msg handle;
-	int n, qdcount, ancount, nscount, arcount;
+	int qdcount, ancount, nscount, arcount;
 	u_int opcode, rcode, id;
 
 	if ((_res.options & RES_INIT) == 0 && res_init() == -1)
diff --git a/lib/libc/net/res_mkupdate.c b/lib/libc/net/res_mkupdate.c
index 6e0807d3bc27..67513389de30 100644
--- a/lib/libc/net/res_mkupdate.c
+++ b/lib/libc/net/res_mkupdate.c
@@ -62,9 +62,9 @@ int
 res_mkupdate(ns_updrec *rrecp_in, u_char *buf, int buflen) {
 	ns_updrec *rrecp_start = rrecp_in;
 	HEADER *hp;
-	u_char c, *cp, *cp1, *sp1, *sp2, *startp, *endp;
-	int n, i, j, found, soanum, multiline;
-	ns_updrec *rrecp, *tmprrecp, *recptr = NULL;
+	u_char *cp, *sp1, *sp2, *startp, *endp;
+	int n, i, soanum, multiline;
+	ns_updrec *rrecp;
 	struct in_addr ina;
         char buf2[MAXDNAME];
 	int section, numrrs = 0, counts[ns_s_max];
@@ -348,7 +348,6 @@ static int
 getnum_str(u_char **startpp, u_char *endp) {
         int c, n;
         int seendigit = 0;
-        int seendecimal = 0;
         int m = 0;
 
         for (n = 0; *startpp <= endp; ) {
diff --git a/lib/libc/posix1e/mac.c b/lib/libc/posix1e/mac.c
index ebea67b1881c..3c08e47fef22 100644
--- a/lib/libc/posix1e/mac.c
+++ b/lib/libc/posix1e/mac.c
@@ -97,9 +97,7 @@ mac_init_internal(void)
 		return (0);
 
 	while (fgets(line, LINE_MAX, file)) {
-		char *argv[ARG_MAX];
-		char *arg, *parse, *statement, *policyname, *modulename;
-		int argc;
+		char *arg, *parse, *statement;
 
 		if (line[strlen(line)-1] == '\n')
 			line[strlen(line)-1] = '\0';
@@ -206,7 +204,6 @@ mac_reload(void)
 int
 mac_free(struct mac *mac)
 {
-	int error;
 
 	if (mac->m_string != NULL)
 		free(mac->m_string);
@@ -218,9 +215,6 @@ mac_free(struct mac *mac)
 int
 mac_from_text(struct mac **mac, const char *text)
 {
-	struct mac *temp;
-	char *dup, *element, *search;
-	int count, error;
 
 	*mac = (struct mac *) malloc(sizeof(**mac));
 	if (*mac == NULL)
@@ -251,7 +245,6 @@ mac_to_text(struct mac *mac, char **text)
 int
 mac_prepare(struct mac **mac, char *elements)
 {
-	struct mac *temp;
 
 	if (strlen(elements) >= MAC_MAX_LABEL_BUF_LEN)
 		return (EINVAL);