*: add -Wunused-parameter; fix resulting breakage

function old new delta procps_scan 1265 1298 +33 aliascmd 278 283 +5 parse_file_cmd 116 120 +4 dname_enc 373 377 +4 setcmd 90 93 +3 execcmd 57 60 +3 count_lines 72 74 +2 process_command_subs 340 339 -1 test_main 409 407 -2 mknod_main 179 177 -2 handle_incoming_and_exit 2653 2651 -2 argstr 1312 1310 -2 shiftcmd 131 128 -3 exitcmd 46 43 -3 dotcmd 297 294 -3 breakcmd 86 83 -3 evalpipe 353 349 -4 evalcommand 1180 1176 -4 evalcmd 109 105 -4 send_tree 374 369 -5 mkfifo_main 82 77 -5 evalsubshell 152 147 -5 typecmd 75 69 -6 letcmd 61 55 -6 add_cmd 1190 1183 -7 main 891 883 -8 ash_main 1415 1407 -8 parse_stream 1377 1367 -10 alloc_procps_scan 55 - -55 ------------------------------------------------------------------------------ (add/remove: 0/1 grow/shrink: 7/21 up/down: 54/-148) Total: -94 bytes text data bss dec hex filename 797195 658 7428 805281 c49a1 busybox_old 797101 658 7428 805187 c4943 busybox_unstripped
author: Denis Vlasenko <vda.linux@googlemail.com> 2008-03-17 09:00:54 +0000
committer: Denis Vlasenko <vda.linux@googlemail.com> 2008-03-17 09:00:54 +0000
commit: 68404f13d4bf4826e3609703dad5375763db28ab (patch)
tree: b89ed41daeb3a761ac9416a6eed090023b23e7e2
parent: a55bd05f3cea6c7cbfb45d15009cb70570c2a43b (diff)
download: busybox-68404f13d4bf4826e3609703dad5375763db28ab.tar.gz
138 files changed, 352 insertions, 327 deletions
diff --git a/Makefile.flags b/Makefile.flags
index 26552222d..61bff4f66 100644
--- a/Makefile.flags
+++ b/Makefile.flags
@@ -20,6 +20,7 @@ CPPFLAGS += \
 # flag checks are grouped together to speed the checks up a bit..
 CFLAGS += $(call cc-option,-Wall -Wshadow -Wwrite-strings,)
 CFLAGS += $(call cc-option,-Wundef -Wstrict-prototypes,)
+CFLAGS += $(call cc-option,-Wunused -Wunused-parameter,)
 # If you want to add "-Wmissing-prototypes -Wmissing-declarations" above
 # (or anything else for that matter) make sure that it is still possible
 # to build bbox without warnings. Current offender: find.c:alloc_action().
diff --git a/archival/bbunzip.c b/archival/bbunzip.c
index b467f1b19..327b3cf2c 100644
--- a/archival/bbunzip.c
+++ b/archival/bbunzip.c
@@ -159,7 +159,7 @@ USE_DESKTOP(long long) int unpack_bunzip2(void)
 }
 
 int bunzip2_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int bunzip2_main(int argc, char **argv)
+int bunzip2_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	getopt32(argv, "cfvdt");
 	argv += optind;
@@ -257,7 +257,7 @@ USE_DESKTOP(long long) int unpack_gunzip(void)
 }
 
 int gunzip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int gunzip_main(int argc, char **argv)
+int gunzip_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	getopt32(argv, "cfvdt");
 	argv += optind;
@@ -295,7 +295,7 @@ USE_DESKTOP(long long) int unpack_unlzma(void)
 }
 
 int unlzma_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int unlzma_main(int argc, char **argv)
+int unlzma_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	getopt32(argv, "cf");
 	argv += optind;
@@ -337,7 +337,7 @@ USE_DESKTOP(long long) int unpack_uncompress(void)
 }
 
 int uncompress_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int uncompress_main(int argc, char **argv)
+int uncompress_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	getopt32(argv, "cf");
 	argv += optind;
diff --git a/archival/dpkg.c b/archival/dpkg.c
index e90e82b64..7693342f7 100644
--- a/archival/dpkg.c
+++ b/archival/dpkg.c
@@ -949,7 +949,7 @@ static int package_satisfies_dependency(int package, int depend_type)
 	return 0;
 }
 
-static int check_deps(deb_file_t **deb_file, int deb_start, int dep_max_count)
+static int check_deps(deb_file_t **deb_file, int deb_start /*, int dep_max_count - ?? */)
 {
 	int *conflicts = NULL;
 	int conflicts_num = 0;
@@ -1689,7 +1689,7 @@ int dpkg_main(int argc, char **argv)
 
 	/* Check that the deb file arguments are installable */
 	if (!(opt & OPT_force_ignore_depends)) {
-		if (!check_deps(deb_file, 0, deb_count)) {
+		if (!check_deps(deb_file, 0 /*, deb_count*/)) {
 			bb_error_msg_and_die("dependency check failed");
 		}
 	}
diff --git a/console-tools/clear.c b/console-tools/clear.c
index 769ce3121..0d94e35b8 100644
--- a/console-tools/clear.c
+++ b/console-tools/clear.c
@@ -13,7 +13,7 @@
 #include "libbb.h"
 
 int clear_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int clear_main(int argc, char **argv)
+int clear_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	return printf("\033[H\033[J") != 6;
 }
diff --git a/console-tools/loadfont.c b/console-tools/loadfont.c
index 882b8817a..843f4b035 100644
--- a/console-tools/loadfont.c
+++ b/console-tools/loadfont.c
@@ -167,7 +167,7 @@ static void loadnewfont(int fd)
 }
 
 int loadfont_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int loadfont_main(int argc, char **argv)
+int loadfont_main(int argc, char **argv ATTRIBUTE_UNUSED)
 {
 	int fd;
 
diff --git a/console-tools/loadkmap.c b/console-tools/loadkmap.c
index 40885ee0c..bea5a771f 100644
--- a/console-tools/loadkmap.c
+++ b/console-tools/loadkmap.c
@@ -26,7 +26,7 @@ struct kbentry {
 #define MAX_NR_KEYMAPS  256
 
 int loadkmap_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int loadkmap_main(int argc, char **argv)
+int loadkmap_main(int argc, char **argv ATTRIBUTE_UNUSED)
 {
 	struct kbentry ke;
 	int i, j, fd;
diff --git a/console-tools/reset.c b/console-tools/reset.c
index bc18cd050..f36ef544c 100644
--- a/console-tools/reset.c
+++ b/console-tools/reset.c
@@ -18,7 +18,7 @@ int stty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 #endif
 
 int reset_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int reset_main(int argc, char **argv)
+int reset_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	static const char *const args[] = {
 		"stty", "sane", NULL
diff --git a/console-tools/resize.c b/console-tools/resize.c
index 7f72b9a46..01b1442f6 100644
--- a/console-tools/resize.c
+++ b/console-tools/resize.c
@@ -21,10 +21,10 @@ onintr(int sig ATTRIBUTE_UNUSED)
 }
 
 int resize_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int resize_main(int argc, char **argv)
+int resize_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	struct termios new;
-	struct winsize w = { 0,0,0,0 };
+	struct winsize w = { 0, 0, 0, 0 };
 	int ret;
 
 	/* We use _stderr_ in order to make resize usable
diff --git a/coreutils/cat.c b/coreutils/cat.c
index 18a74b81d..181d96a2c 100644
--- a/coreutils/cat.c
+++ b/coreutils/cat.c
@@ -44,7 +44,7 @@ int bb_cat(char **argv)
 }
 
 int cat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int cat_main(int argc, char **argv)
+int cat_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	getopt32(argv, "u");
 	argv += optind;
diff --git a/coreutils/catv.c b/coreutils/catv.c
index 5f5f1bf86..a5ee534e2 100644
--- a/coreutils/catv.c
+++ b/coreutils/catv.c
@@ -13,7 +13,7 @@
 #include "libbb.h"
 
 int catv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int catv_main(int argc, char **argv)
+int catv_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int retval = EXIT_SUCCESS;
 	int fd;
diff --git a/coreutils/chmod.c b/coreutils/chmod.c
index a58e4f8e1..1bd0bd5c2 100644
--- a/coreutils/chmod.c
+++ b/coreutils/chmod.c
@@ -68,7 +68,7 @@ static int fileAction(const char *fileName, struct stat *statbuf, void* param, i
 }
 
 int chmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int chmod_main(int argc, char **argv)
+int chmod_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int retval = EXIT_SUCCESS;
 	char *arg, **argp;
diff --git a/coreutils/chown.c b/coreutils/chown.c
index df3b77dac..eaaefaf29 100644
--- a/coreutils/chown.c
+++ b/coreutils/chown.c
@@ -42,7 +42,7 @@ typedef int (*chown_fptr)(const char *, uid_t, gid_t);
 static struct bb_uidgid_t ugid = { -1, -1 };
 
 static int fileAction(const char *fileName, struct stat *statbuf,
-		void *cf, int depth)
+		void *cf, int depth ATTRIBUTE_UNUSED)
 {
 	uid_t u = (ugid.uid == (uid_t)-1) ? statbuf->st_uid : ugid.uid;
 	gid_t g = (ugid.gid == (gid_t)-1) ? statbuf->st_gid : ugid.gid;
@@ -62,7 +62,7 @@ static int fileAction(const char *fileName, struct stat *statbuf,
 }
 
 int chown_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int chown_main(int argc, char **argv)
+int chown_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int retval = EXIT_SUCCESS;
 	int flags;
diff --git a/coreutils/comm.c b/coreutils/comm.c
index 67088e06c..4dbc0d477 100644
--- a/coreutils/comm.c
+++ b/coreutils/comm.c
@@ -36,7 +36,7 @@ static void writeline(char *line, int class, int flags)
 }
 
 int comm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int comm_main(int argc, char **argv)
+int comm_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 #define LINE_LEN 100
 #define BB_EOF_0 0x1
diff --git a/coreutils/cut.c b/coreutils/cut.c
index 4f0bed3e7..ed6f8f608 100644
--- a/coreutils/cut.c
+++ b/coreutils/cut.c
@@ -162,7 +162,7 @@ static void cut_file(FILE *file, char delim)
 }
 
 int cut_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int cut_main(int argc, char **argv)
+int cut_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char delim = '\t';	/* delimiter, default is tab */
 	char *sopt, *ltok;
diff --git a/coreutils/du.c b/coreutils/du.c
index 3941151e1..7495f7a7b 100644
--- a/coreutils/du.c
+++ b/coreutils/du.c
@@ -141,7 +141,7 @@ static unsigned long du(const char *filename)
 }
 
 int du_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int du_main(int argc, char **argv)
+int du_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	unsigned long total;
 	int slink_depth_save;
diff --git a/coreutils/echo.c b/coreutils/echo.c
index 771f610b0..fd6c950ea 100644
--- a/coreutils/echo.c
+++ b/coreutils/echo.c
@@ -31,7 +31,7 @@
  * using call -> jump optimization */
 
 int echo_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int echo_main(int argc, char **argv)
+int echo_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	const char *arg;
 #if !ENABLE_FEATURE_FANCY_ECHO
diff --git a/coreutils/env.c b/coreutils/env.c
index 7273d39fc..f678565eb 100644
--- a/coreutils/env.c
+++ b/coreutils/env.c
@@ -40,7 +40,7 @@ static const char env_longopts[] ALIGN1 =
 #endif
 
 int env_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int env_main(int argc, char **argv)
+int env_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	/* cleanenv was static - why? */
 	char *cleanenv[1];
diff --git a/coreutils/expand.c b/coreutils/expand.c
index 96a74a336..c0133956f 100644
--- a/coreutils/expand.c
+++ b/coreutils/expand.c
@@ -126,7 +126,7 @@ static void unexpand(FILE *file, unsigned int tab_size, unsigned opt)
 #endif
 
 int expand_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int expand_main(int argc, char **argv)
+int expand_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	/* Default 8 spaces for 1 tab */
 	const char *opt_t = "8";
diff --git a/coreutils/id.c b/coreutils/id.c
index 7dba80284..9afb10088 100644
--- a/coreutils/id.c
+++ b/coreutils/id.c
@@ -37,7 +37,7 @@ static int printf_full(unsigned int id, const char *arg, const char prefix)
 }
 
 int id_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int id_main(int argc, char **argv)
+int id_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct passwd *p;
 	uid_t uid;
diff --git a/coreutils/libcoreutils/coreutils.h b/coreutils/libcoreutils/coreutils.h
index 687c7cc5c..c1796b381 100644
--- a/coreutils/libcoreutils/coreutils.h
+++ b/coreutils/libcoreutils/coreutils.h
@@ -11,6 +11,6 @@ typedef int (*stat_func)(const char *fn, struct stat *ps);
 int cp_mv_stat2(const char *fn, struct stat *fn_stat, stat_func sf);
 int cp_mv_stat(const char *fn, struct stat *fn_stat);
 
-mode_t getopt_mk_fifo_nod(int argc, char **argv);
+mode_t getopt_mk_fifo_nod(char **argv);
 
 #endif
diff --git a/coreutils/libcoreutils/getopt_mk_fifo_nod.c b/coreutils/libcoreutils/getopt_mk_fifo_nod.c
index 377621568..32e55a56b 100644
--- a/coreutils/libcoreutils/getopt_mk_fifo_nod.c
+++ b/coreutils/libcoreutils/getopt_mk_fifo_nod.c
@@ -23,7 +23,7 @@
 #include "libbb.h"
 #include "coreutils.h"
 
-mode_t getopt_mk_fifo_nod(int argc, char **argv)
+mode_t getopt_mk_fifo_nod(char **argv)
 {
 	mode_t mode = 0666;
 	char *smode = NULL;
diff --git a/coreutils/mkfifo.c b/coreutils/mkfifo.c
index d298adae0..d9261b96a 100644
--- a/coreutils/mkfifo.c
+++ b/coreutils/mkfifo.c
@@ -14,12 +14,12 @@
 #include "libcoreutils/coreutils.h"
 
 int mkfifo_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int mkfifo_main(int argc, char **argv)
+int mkfifo_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	mode_t mode;
 	int retval = EXIT_SUCCESS;
 
-	mode = getopt_mk_fifo_nod(argc, argv);
+	mode = getopt_mk_fifo_nod(argv);
 
 	argv += optind;
 	if (!*argv) {
diff --git a/coreutils/mknod.c b/coreutils/mknod.c
index 55f531033..0c694948e 100644
--- a/coreutils/mknod.c
+++ b/coreutils/mknod.c
@@ -24,7 +24,7 @@ int mknod_main(int argc, char **argv)
 	dev_t dev;
 	const char *name;
 
-	mode = getopt_mk_fifo_nod(argc, argv);
+	mode = getopt_mk_fifo_nod(argv);
 	argv += optind;
 	argc -= optind;
 
diff --git a/coreutils/pwd.c b/coreutils/pwd.c
index ac604db97..9279dbee6 100644
--- a/coreutils/pwd.c
+++ b/coreutils/pwd.c
@@ -12,7 +12,7 @@
 /* This is a NOFORK applet. Be very careful! */
 
 int pwd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int pwd_main(int argc, char **argv)
+int pwd_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	char *buf;
 
diff --git a/coreutils/readlink.c b/coreutils/readlink.c
index 1ab94595a..3f13a3660 100644
--- a/coreutils/readlink.c
+++ b/coreutils/readlink.c
@@ -11,7 +11,7 @@
 #include "libbb.h"
 
 int readlink_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int readlink_main(int argc, char **argv)
+int readlink_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *buf;
 	char *fname;
diff --git a/coreutils/rm.c b/coreutils/rm.c
index a123156d2..1774ce296 100644
--- a/coreutils/rm.c
+++ b/coreutils/rm.c
@@ -20,7 +20,7 @@
 /* This is a NOFORK applet. Be very careful! */
 
 int rm_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int rm_main(int argc, char **argv)
+int rm_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int status = 0;
 	int flags = 0;
diff --git a/coreutils/rmdir.c b/coreutils/rmdir.c
index 96bee231b..cb6046617 100644
--- a/coreutils/rmdir.c
+++ b/coreutils/rmdir.c
@@ -19,7 +19,7 @@
 #define IGNORE_NON_EMPTY 0x02
 
 int rmdir_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int rmdir_main(int argc, char **argv)
+int rmdir_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int status = EXIT_SUCCESS;
 	int flags;
diff --git a/coreutils/sort.c b/coreutils/sort.c
index d8df4c532..510f7a235 100644
--- a/coreutils/sort.c
+++ b/coreutils/sort.c
@@ -275,7 +275,7 @@ static unsigned str2u(char **str)
 #endif
 
 int sort_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int sort_main(int argc, char **argv)
+int sort_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	FILE *fp, *outfile = stdout;
 	char *line, **lines = NULL;
diff --git a/coreutils/split.c b/coreutils/split.c
index 895a04b06..cf26a9322 100644
--- a/coreutils/split.c
+++ b/coreutils/split.c
@@ -56,7 +56,7 @@ enum { READ_BUFFER_SIZE = COMMON_BUFSIZE - 1 };
 #define SPLIT_OPT_a (1<<2)
 
 int split_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int split_main(int argc, char **argv)
+int split_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	unsigned suffix_len = 2;
 	char *pfx;
diff --git a/coreutils/sync.c b/coreutils/sync.c
index 9dbdd98aa..5c9d0926f 100644
--- a/coreutils/sync.c
+++ b/coreutils/sync.c
@@ -14,8 +14,9 @@
 /* This is a NOFORK applet. Be very careful! */
 
 int sync_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int sync_main(int argc, char **argv)
+int sync_main(int argc, char **argv ATTRIBUTE_UNUSED)
 {
+	/* coreutils-6.9 compat */
 	bb_warn_ignoring_args(argc - 1);
 
 	sync();
diff --git a/coreutils/tac.c b/coreutils/tac.c
index 7951be255..ddadcc7bc 100644
--- a/coreutils/tac.c
+++ b/coreutils/tac.c
@@ -26,7 +26,7 @@ struct lstring {
 };
 
 int tac_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int tac_main(int argc, char **argv)
+int tac_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char **name;
 	FILE *f;
diff --git a/coreutils/touch.c b/coreutils/touch.c
index 3fe8b64ad..0b58179e7 100644
--- a/coreutils/touch.c
+++ b/coreutils/touch.c
@@ -22,7 +22,7 @@
 /* This is a NOFORK applet. Be very careful! */
 
 int touch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int touch_main(int argc, char **argv)
+int touch_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int fd;
 	int status = EXIT_SUCCESS;
diff --git a/coreutils/tr.c b/coreutils/tr.c
index a28ab465e..d0af63a36 100644
--- a/coreutils/tr.c
+++ b/coreutils/tr.c
@@ -174,7 +174,7 @@ static int complement(char *buffer, int buffer_len)
 }
 
 int tr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int tr_main(int argc, char **argv)
+int tr_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int output_length = 0, input_length;
 	int i;
diff --git a/coreutils/true.c b/coreutils/true.c
index 2b5919320..565e68b83 100644
--- a/coreutils/true.c
+++ b/coreutils/true.c
@@ -15,7 +15,7 @@
 /* This is a NOFORK applet. Be very careful! */
 
 int true_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int true_main(int argc, char **argv)
+int true_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	return EXIT_SUCCESS;
 }
diff --git a/coreutils/tty.c b/coreutils/tty.c
index b0a50ff61..48e15117c 100644
--- a/coreutils/tty.c
+++ b/coreutils/tty.c
@@ -13,7 +13,7 @@
 #include "libbb.h"
 
 int tty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int tty_main(int argc, char **argv)
+int tty_main(int argc, char **argv SKIP_INCLUDE_SUSv2(ATTRIBUTE_UNUSED))
 {
 	const char *s;
 	USE_INCLUDE_SUSv2(int silent;)	/* Note: No longer relevant in SUSv3. */
@@ -22,15 +22,17 @@ int tty_main(int argc, char **argv)
 	xfunc_error_retval = 2;	/* SUSv3 requires > 1 for error. */
 
 	USE_INCLUDE_SUSv2(silent = getopt32(argv, "s");)
+	USE_INCLUDE_SUSv2(argc -= optind;)
+	SKIP_INCLUDE_SUSv2(argc -= 1;)
 
 	/* gnu tty outputs a warning that it is ignoring all args. */
-	bb_warn_ignoring_args(argc - optind);
+	bb_warn_ignoring_args(argc);
 
 	retval = 0;
 
 	s = ttyname(0);
 	if (s == NULL) {
-	/* According to SUSv3, ttyname can on fail with EBADF or ENOTTY.
+	/* According to SUSv3, ttyname can fail with EBADF or ENOTTY.
 	 * We know the file descriptor is good, so failure means not a tty. */
 		s = "not a tty";
 		retval = 1;
diff --git a/coreutils/uniq.c b/coreutils/uniq.c
index cda1e61a9..d0729607c 100644
--- a/coreutils/uniq.c
+++ b/coreutils/uniq.c
@@ -28,7 +28,7 @@ static FILE *xgetoptfile_uniq_s(char **argv, int read0write2)
 }
 
 int uniq_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int uniq_main(int argc, char **argv)
+int uniq_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	FILE *in, *out;
 	unsigned long dups, skip_fields, skip_chars, i;
diff --git a/coreutils/uudecode.c b/coreutils/uudecode.c
index 46836624c..34a22398c 100644
--- a/coreutils/uudecode.c
+++ b/coreutils/uudecode.c
@@ -127,7 +127,7 @@ static void read_base64(FILE *src_stream, FILE *dst_stream)
 }
 
 int uudecode_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int uudecode_main(int argc, char **argv)
+int uudecode_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	FILE *src_stream = stdin;
 	char *outname = NULL;
diff --git a/coreutils/wc.c b/coreutils/wc.c
index 58ea1c7db..de3c895bd 100644
--- a/coreutils/wc.c
+++ b/coreutils/wc.c
@@ -69,7 +69,7 @@ enum {
 };
 
 int wc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int wc_main(int argc, char **argv)
+int wc_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	FILE *fp;
 	const char *s, *arg;
diff --git a/coreutils/who.c b/coreutils/who.c
index e6bd0afa8..a206ec54b 100644
--- a/coreutils/who.c
+++ b/coreutils/who.c
@@ -41,7 +41,7 @@ static void idle_string(char *str6, time_t t)
 }
 
 int who_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int who_main(int argc, char **argv)
+int who_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char str6[6];
 	struct utmp *ut;
diff --git a/coreutils/whoami.c b/coreutils/whoami.c
index e2fdfc955..d35572ece 100644
--- a/coreutils/whoami.c
+++ b/coreutils/whoami.c
@@ -14,7 +14,7 @@
 /* This is a NOFORK applet. Be very careful! */
 
 int whoami_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int whoami_main(int argc, char **argv)
+int whoami_main(int argc, char **argv ATTRIBUTE_UNUSED)
 {
 	if (argc > 1)
 		bb_show_usage();
diff --git a/debianutils/mktemp.c b/debianutils/mktemp.c
index 7ed624526..b011fc10c 100644
--- a/debianutils/mktemp.c
+++ b/debianutils/mktemp.c
@@ -12,7 +12,7 @@
 #include "libbb.h"
 
 int mktemp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int mktemp_main(int argc, char **argv)
+int mktemp_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	// -d      Make a directory instead of a file
 	// -q      Fail silently if an error occurs [bbox: ignored]
diff --git a/debianutils/pipe_progress.c b/debianutils/pipe_progress.c
index 4bfdf6aa4..cbdd38ff4 100644
--- a/debianutils/pipe_progress.c
+++ b/debianutils/pipe_progress.c
@@ -15,7 +15,7 @@
  * Activity is indicated by a '.' to stderr
  */
 int pipe_progress_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int pipe_progress_main(int argc, char **argv)
+int pipe_progress_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	RESERVE_CONFIG_BUFFER(buf, PIPE_PROGRESS_SIZE);
 	time_t t = time(NULL);
diff --git a/debianutils/run_parts.c b/debianutils/run_parts.c
index 20f8b3ab8..2adad026d 100644
--- a/debianutils/run_parts.c
+++ b/debianutils/run_parts.c
@@ -79,7 +79,7 @@ static int bb_alphasort(const void *p1, const void *p2)
 	return (option_mask32 & OPT_r) ? -r : r;
 }
 
-static int act(const char *file, struct stat *statbuf, void *args, int depth)
+static int act(const char *file, struct stat *statbuf, void *args ATTRIBUTE_UNUSED, int depth)
 {
 	if (depth == 1)
 		return TRUE;
@@ -113,7 +113,7 @@ static const char runparts_longopts[] ALIGN1 =
 #endif
 
 int run_parts_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int run_parts_main(int argc, char **argv)
+int run_parts_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	const char *umask_p = "22";
 	llist_t *arg_list = NULL;
diff --git a/e2fsprogs/chattr.c b/e2fsprogs/chattr.c
index 0f19af8e4..e783d3e89 100644
--- a/e2fsprogs/chattr.c
+++ b/e2fsprogs/chattr.c
@@ -125,7 +125,7 @@ static void change_attributes(const char *name, struct globals *gp)
 }
 
 int chattr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int chattr_main(int argc, char **argv)
+int chattr_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct globals g;
 	char *arg;
diff --git a/e2fsprogs/fsck.c b/e2fsprogs/fsck.c
index 6769a7237..178792f6f 100644
--- a/e2fsprogs/fsck.c
+++ b/e2fsprogs/fsck.c
@@ -1128,7 +1128,7 @@ static void signal_cancel(int sig ATTRIBUTE_UNUSED)
 }
 
 int fsck_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int fsck_main(int argc, char **argv)
+int fsck_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int i, status;
 	/*int interactive;*/
diff --git a/e2fsprogs/lsattr.c b/e2fsprogs/lsattr.c
index a11f2437b..c58948698 100644
--- a/e2fsprogs/lsattr.c
+++ b/e2fsprogs/lsattr.c
@@ -58,7 +58,7 @@ static void list_attributes(const char *name)
 }
 
 static int lsattr_dir_proc(const char *dir_name, struct dirent *de,
-			   void *private)
+			   void *private ATTRIBUTE_UNUSED)
 {
 	struct stat st;
 	char *path;
@@ -96,7 +96,7 @@ static void lsattr_args(const char *name)
 }
 
 int lsattr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int lsattr_main(int argc, char **argv)
+int lsattr_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	getopt32(argv, "Radlv");
 	argv += optind;
diff --git a/editors/cmp.c b/editors/cmp.c
index 6dfe0401b..9189b3150 100644
--- a/editors/cmp.c
+++ b/editors/cmp.c
@@ -43,7 +43,7 @@ static const char opt_chars[] ALIGN1 = "sl";
 #define CMP_OPT_l (1<<1)
 
 int cmp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int cmp_main(int argc, char **argv)
+int cmp_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	FILE *fp1, *fp2, *outfile = stdout;
 	const char *filename1, *filename2 = "-";
diff --git a/editors/diff.c b/editors/diff.c
index 1359af838..f9e82ba02 100644
--- a/editors/diff.c
+++ b/editors/diff.c
@@ -1205,7 +1205,7 @@ static void diffdir(char *p1, char *p2)
 
 
 int diff_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int diff_main(int argc, char **argv)
+int diff_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	bool gotstdin = 0;
 	char *U_opt;
diff --git a/editors/patch.c b/editors/patch.c
index 1b283a133..ff1a01d2e 100644
--- a/editors/patch.c
+++ b/editors/patch.c
@@ -78,7 +78,7 @@ static int file_doesnt_exist(const char *filename)
 }
 
 int patch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int patch_main(int argc, char **argv)
+int patch_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int patch_level = -1;
 	char *patch_line;
diff --git a/editors/sed.c b/editors/sed.c
index c2b9e94b6..a0994aec0 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -301,7 +301,7 @@ static int get_address(const char *my_str, int *linenum, regex_t ** regex)
 }
 
 /* Grab a filename.  Whitespace at start is skipped, then goes to EOL. */
-static int parse_file_cmd(sed_cmd_t *sed_cmd, const char *filecmdstr, char **retval)
+static int parse_file_cmd(/*sed_cmd_t *sed_cmd,*/ const char *filecmdstr, char **retval)
 {
 	int start = 0, idx, hack = 0;
 
@@ -375,7 +375,7 @@ static int parse_subst_cmd(sed_cmd_t *sed_cmd, const char *substr)
 		case 'w':
 		{
 			char *temp;
-			idx += parse_file_cmd(sed_cmd, substr+idx, &temp);
+			idx += parse_file_cmd(/*sed_cmd,*/ substr+idx, &temp);
 			break;
 		}
 		/* Ignore case (gnu exension) */
@@ -436,7 +436,7 @@ static const char *parse_cmd_args(sed_cmd_t *sed_cmd, const char *cmdstr)
 	} else if (strchr("rw", sed_cmd->cmd)) {
 		if (sed_cmd->end_line || sed_cmd->end_match)
 			bb_error_msg_and_die("command only uses one address");
-		cmdstr += parse_file_cmd(sed_cmd, cmdstr, &sed_cmd->string);
+		cmdstr += parse_file_cmd(/*sed_cmd,*/ cmdstr, &sed_cmd->string);
 		if (sed_cmd->cmd == 'w') {
 			sed_cmd->sw_file = xfopen(sed_cmd->string, "w");
 			sed_cmd->sw_last_char = '\n';
diff --git a/editors/vi.c b/editors/vi.c
index 572e04972..c2d4457e9 100644
--- a/editors/vi.c
+++ b/editors/vi.c
@@ -301,7 +301,7 @@ static void status_line_bold(const char *, ...);
 static void not_implemented(const char *); // display "Not implemented" message
 static int format_edit_status(void);	// format file status on status line
 static void redraw(int);	// force a full screen refresh
-static char* format_line(char*, int);
+static char* format_line(char* /*, int*/);
 static void refresh(int);	// update the terminal from screen[]
 
 static void Indicate_Error(void);       // use flash or beep to indicate error
@@ -2764,7 +2764,7 @@ static void redraw(int full_screen)
 }
 
 //----- Format a text[] line into a buffer ---------------------
-static char* format_line(char *src, int li)
+static char* format_line(char *src /*, int li*/)
 {
 	unsigned char c;
 	int co;
@@ -2848,7 +2848,7 @@ static void refresh(int full_screen)
 		int cs, ce;				// column start & end
 		char *out_buf;
 		// format current text line
-		out_buf = format_line(tp, li);
+		out_buf = format_line(tp /*, li*/);
 
 		// skip to the end of the current text[] line
 		if (tp < end) {
diff --git a/findutils/find.c b/findutils/find.c
index 8c0397798..50c790161 100644
--- a/findutils/find.c
+++ b/findutils/find.c
@@ -74,7 +74,9 @@ typedef struct {
 #endif
 } action;
 #define ACTS(name, arg...) typedef struct { action a; arg; } action_##name;
-#define ACTF(name)         static int func_##name(const char *fileName, struct stat *statbuf, action_##name* ap)
+#define ACTF(name)         static int func_##name(const char *fileName ATTRIBUTE_UNUSED, \
+                                                  struct stat *statbuf ATTRIBUTE_UNUSED, \
+                                                  action_##name* ap ATTRIBUTE_UNUSED)
                          ACTS(print)
                          ACTS(name,  const char *pattern; bool iname;)
 USE_FEATURE_FIND_PATH(   ACTS(path,  const char *pattern;))
diff --git a/findutils/grep.c b/findutils/grep.c
index 1094dcc63..c4cfcb852 100644
--- a/findutils/grep.c
+++ b/findutils/grep.c
@@ -371,7 +371,7 @@ static void load_regexes_from_file(llist_t *fopt)
 	}
 }
 
-static int file_action_grep(const char *filename, struct stat *statbuf, void* matched, int depth)
+static int file_action_grep(const char *filename, struct stat *statbuf ATTRIBUTE_UNUSED, void* matched, int depth ATTRIBUTE_UNUSED)
 {
 	FILE *file = fopen(filename, "r");
 	if (file == NULL) {
diff --git a/include/busybox.h b/include/busybox.h
index ec6953e87..52720244b 100644
--- a/include/busybox.h
+++ b/include/busybox.h
@@ -59,7 +59,9 @@ extern const uint8_t applet_install_loc[];
 /* Length of these names has effect on size of libbusybox
  * and "individual" binaries. Keep them short.
  */
-void lbb_prepare(const char *applet, char **argv) MAIN_EXTERNALLY_VISIBLE;
+void lbb_prepare(const char *applet
+	USE_FEATURE_INDIVIDUAL(, char **argv)
+	) MAIN_EXTERNALLY_VISIBLE;
 #if ENABLE_BUILD_LIBBUSYBOX
 #if ENABLE_FEATURE_SHARED_BUSYBOX
 int lbb_main(int argc, char **argv) EXTERNALLY_VISIBLE;
diff --git a/include/libbb.h b/include/libbb.h
index 09deba671..ee1ef518e 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1120,7 +1120,7 @@ enum {
 			| PSSCAN_STIME | PSSCAN_UTIME | PSSCAN_START_TIME
 			| PSSCAN_TTY,
 };
-procps_status_t* alloc_procps_scan(int flags);
+//procps_status_t* alloc_procps_scan(void);
 void free_procps_scan(procps_status_t* sp);
 procps_status_t* procps_scan(procps_status_t* sp, int flags);
 /* Format cmdline (up to col chars) into char buf[col+1] */
diff --git a/ipsvd/tcpudp.c b/ipsvd/tcpudp.c
index 2e8dffa0f..8f23ca640 100644
--- a/ipsvd/tcpudp.c
+++ b/ipsvd/tcpudp.c
@@ -143,7 +143,7 @@ static void connection_status(void)
 		bb_error_msg("status %u/%u", cnum, cmax);
 }
 
-static void sig_child_handler(int sig)
+static void sig_child_handler(int sig ATTRIBUTE_UNUSED)
 {
 	int wstat;
 	int pid;
@@ -161,7 +161,7 @@ static void sig_child_handler(int sig)
 }
 
 int tcpudpsvd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int tcpudpsvd_main(int argc, char **argv)
+int tcpudpsvd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *str_c, *str_C, *str_b, *str_t;
 	char *user;
diff --git a/libbb/appletlib.c b/libbb/appletlib.c
index fec99c5ce..de27dd80e 100644
--- a/libbb/appletlib.c
+++ b/libbb/appletlib.c
@@ -123,7 +123,8 @@ int find_applet_by_name(const char *name)
 int *const bb_errno __attribute__ ((section (".data")));
 #endif
 
-void lbb_prepare(const char *applet, char **argv)
+void lbb_prepare(const char *applet
+		USE_FEATURE_INDIVIDUAL(, char **argv))
 {
 #ifdef __GLIBC__
 	(*(int **)&bb_errno) = __errno_location();
@@ -662,10 +663,10 @@ void run_applet_and_exit(const char *name, char **argv)
 #if ENABLE_BUILD_LIBBUSYBOX
 int lbb_main(int argc, char **argv)
 #else
-int main(int argc, char **argv)
+int main(int argc ATTRIBUTE_UNUSED, char **argv)
 #endif
 {
-	lbb_prepare("busybox", argv);
+	lbb_prepare("busybox" USE_FEATURE_INDIVIDUAL(, argv));
 
 #if !BB_MMU
 	/* NOMMU re-exec trick sets high-order bit in first byte of name */
diff --git a/libbb/procps.c b/libbb/procps.c
index 015ad80ef..f67f7dcde 100644
--- a/libbb/procps.c
+++ b/libbb/procps.c
@@ -93,7 +93,7 @@ static int read_to_buf(const char *filename, void *buf)
 	return ret;
 }
 
-procps_status_t *alloc_procps_scan(int flags)
+static procps_status_t *alloc_procps_scan(void)
 {
 	unsigned n = getpagesize();
 	procps_status_t* sp = xzalloc(sizeof(procps_status_t));
@@ -175,7 +175,7 @@ procps_status_t *procps_scan(procps_status_t* sp, int flags)
 	struct stat sb;
 
 	if (!sp)
-		sp = alloc_procps_scan(flags);
+		sp = alloc_procps_scan();
 
 	for (;;) {
 		entry = readdir(sp->dir);
diff --git a/libbb/recursive_action.c b/libbb/recursive_action.c
index 37363bb3e..513aff315 100644
--- a/libbb/recursive_action.c
+++ b/libbb/recursive_action.c
@@ -22,8 +22,10 @@
  * is so stinking huge.
  */
 
-static int true_action(const char *fileName, struct stat *statbuf,
-						void* userData, int depth)
+static int true_action(const char *fileName ATTRIBUTE_UNUSED,
+		struct stat *statbuf ATTRIBUTE_UNUSED,
+		void* userData ATTRIBUTE_UNUSED,
+		int depth ATTRIBUTE_UNUSED)
 {
 	return TRUE;
 }
diff --git a/loginutils/adduser.c b/loginutils/adduser.c
index 7b5283e99..d409eabb9 100644
--- a/loginutils/adduser.c
+++ b/loginutils/adduser.c
@@ -85,7 +85,7 @@ static const char adduser_longopts[] ALIGN1 =
  * can be customized via command-line parameters.
  */
 int adduser_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int adduser_main(int argc, char **argv)
+int adduser_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct passwd pw;
 	const char *usegroup = NULL;
diff --git a/loginutils/chpasswd.c b/loginutils/chpasswd.c
index 7d47899fe..83e5e0c1f 100644
--- a/loginutils/chpasswd.c
+++ b/loginutils/chpasswd.c
@@ -21,7 +21,7 @@ static const char chpasswd_longopts[] ALIGN1 =
 #define OPT_MD5		2
 
 int chpasswd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int chpasswd_main(int argc, char **argv)
+int chpasswd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *name, *pass;
 	char salt[sizeof("$N$XXXXXXXX")];
diff --git a/loginutils/cryptpw.c b/loginutils/cryptpw.c
index 06817a681..c5170c6a4 100644
--- a/loginutils/cryptpw.c
+++ b/loginutils/cryptpw.c
@@ -8,7 +8,7 @@
 #include "libbb.h"
 
 int cryptpw_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int cryptpw_main(int argc, char **argv)
+int cryptpw_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char salt[sizeof("$N$XXXXXXXX")];
 
diff --git a/loginutils/getty.c b/loginutils/getty.c
index 246bb4711..c8c54e3b9 100644
--- a/loginutils/getty.c
+++ b/loginutils/getty.c
@@ -367,7 +367,7 @@ static void auto_baud(char *buf, unsigned size_buf, struct termios *tp)
 }
 
 /* do_prompt - show login prompt, optionally preceded by /etc/issue contents */
-static void do_prompt(struct options *op, struct termios *tp)
+static void do_prompt(struct options *op)
 {
 #ifdef ISSUE
 	print_login_issue(op->issue, op->tty);
@@ -390,7 +390,7 @@ static int all_is_upcase(const char *s)
 /* get_logname - get user name, establish parity, speed, erase, kill, eol;
  * return NULL on BREAK, logname on success */
 static char *get_logname(char *logname, unsigned size_logname,
-		struct options *op, struct chardata *cp, struct termios *tp)
+		struct options *op, struct chardata *cp)
 {
 	char *bp;
 	char c;				/* input character, full eight bits */
@@ -414,7 +414,7 @@ static char *get_logname(char *logname, unsigned size_logname,
 	logname[0] = '\0';
 	while (!logname[0]) {
 		/* Write issue file and prompt, with "parity" bit == 0. */
-		do_prompt(op, tp);
+		do_prompt(op);
 
 		/* Read name, watch for break, parity, erase, kill, end-of-line. */
 		bp = logname;
@@ -621,7 +621,7 @@ static void update_utmp(const char *line, char *fakehost)
 #endif /* CONFIG_FEATURE_UTMP */
 
 int getty_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int getty_main(int argc, char **argv)
+int getty_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int n;
 	char *fakehost = NULL;          /* Fake hostname for ut_host */
@@ -670,7 +670,7 @@ int getty_main(int argc, char **argv)
 
 #ifdef DEBUGGING
 	dbf = xfopen(DEBUGTERM, "w");
-	for (n = 1; n < argc; n++) {
+	for (n = 1; argv[n]; n++) {
 		debug(argv[n]);
 		debug("\n");
 	}
@@ -750,7 +750,7 @@ int getty_main(int argc, char **argv)
 			/* Read the login name. */
 			debug("reading login name\n");
 			logname = get_logname(line_buf, sizeof(line_buf),
-					&options, &chardata, &termios);
+					&options, &chardata);
 			if (logname)
 				break;
 			/* we are here only if options.numspeed > 1 */
diff --git a/loginutils/login.c b/loginutils/login.c
index a3caa0fca..79e7494bf 100644
--- a/loginutils/login.c
+++ b/loginutils/login.c
@@ -114,7 +114,7 @@ static void write_utent(struct utmp *utptr, const char *username)
 #endif /* !ENABLE_FEATURE_UTMP */
 
 #if ENABLE_FEATURE_NOLOGIN
-static void die_if_nologin_and_non_root(int amroot)
+static void die_if_nologin(void)
 {
 	FILE *fp;
 	int c;
@@ -135,7 +135,7 @@ static void die_if_nologin_and_non_root(int amroot)
 	puts("\r\n[Disconnect bypassed -- root login allowed]\r");
 }
 #else
-static ALWAYS_INLINE void die_if_nologin_and_non_root(int amroot) {}
+static ALWAYS_INLINE void die_if_nologin(void) {}
 #endif
 
 #if ENABLE_FEATURE_SECURETTY && !ENABLE_PAM
@@ -406,7 +406,8 @@ int login_main(int argc, char **argv)
 	}
 
 	alarm(0);
-	die_if_nologin_and_non_root(pw->pw_uid == 0);
+	if (!amroot)
+		die_if_nologin();
 
 	write_utent(&utent, username);
 
diff --git a/loginutils/passwd.c b/loginutils/passwd.c
index 2f85e9f21..3353db1fa 100644
--- a/loginutils/passwd.c
+++ b/loginutils/passwd.c
@@ -70,7 +70,7 @@ static char* new_password(const struct passwd *pw, uid_t myuid, int algo)
 }
 
 int passwd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int passwd_main(int argc, char **argv)
+int passwd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	enum {
 		OPT_algo = 0x1, /* -a - password algorithm */
diff --git a/loginutils/sulogin.c b/loginutils/sulogin.c
index 3a1a8e9f5..caa1a8335 100644
--- a/loginutils/sulogin.c
+++ b/loginutils/sulogin.c
@@ -15,7 +15,7 @@
 
 
 int sulogin_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int sulogin_main(int argc, char **argv)
+int sulogin_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *cp;
 	int timeout = 0;
diff --git a/loginutils/vlock.c b/loginutils/vlock.c
index ff60d78ff..96c1f679a 100644
--- a/loginutils/vlock.c
+++ b/loginutils/vlock.c
@@ -18,21 +18,21 @@
 #include <sys/vt.h>
 #include "libbb.h"
 
-static void release_vt(int signo)
+static void release_vt(int signo ATTRIBUTE_UNUSED)
 {
 	/* If -a, param is 0, which means:
 	 * "no, kernel, we don't allow console switch away from us!" */
 	ioctl(STDIN_FILENO, VT_RELDISP, (unsigned long) !option_mask32);
 }
 
-static void acquire_vt(int signo)
+static void acquire_vt(int signo ATTRIBUTE_UNUSED)
 {
 	/* ACK to kernel that switch to console is successful */
 	ioctl(STDIN_FILENO, VT_RELDISP, VT_ACKACQ);
 }
 
 int vlock_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int vlock_main(int argc, char **argv)
+int vlock_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct vt_mode vtm;
 	struct termios term;
diff --git a/miscutils/chat.c b/miscutils/chat.c
index 4f55738ec..50c5ad976 100644
--- a/miscutils/chat.c
+++ b/miscutils/chat.c
@@ -103,7 +103,7 @@ static size_t unescape(char *s, int *nocr)
 
 
 int chat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int chat_main(int argc, char **argv)
+int chat_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 // should we dump device output? to what fd? by default no.
 // this can be controlled later via ECHO {ON|OFF} chat directive
diff --git a/miscutils/crond.c b/miscutils/crond.c
index 6d4825e85..75555c874 100644
--- a/miscutils/crond.c
+++ b/miscutils/crond.c
@@ -158,7 +158,7 @@ static void crondlog(const char *ctl, ...)
 }
 
 int crond_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int crond_main(int ac, char **av)
+int crond_main(int ac ATTRIBUTE_UNUSED, char **av)
 {
 	unsigned opt;
 
diff --git a/miscutils/crontab.c b/miscutils/crontab.c
index cb261ed18..94d69f032 100644
--- a/miscutils/crontab.c
+++ b/miscutils/crontab.c
@@ -88,7 +88,7 @@ static int open_as_user(const struct passwd *pas, const char *file)
 }
 
 int crontab_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int crontab_main(int argc, char **argv)
+int crontab_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	const struct passwd *pas;
 	const char *crontab_dir = CRONTABS;
diff --git a/miscutils/eject.c b/miscutils/eject.c
index 746a0184e..3d27ce545 100644
--- a/miscutils/eject.c
+++ b/miscutils/eject.c
@@ -79,7 +79,7 @@ static void eject_cdrom(const int fd, const unsigned long flags,
 }
 
 int eject_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int eject_main(int argc, char **argv)
+int eject_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	unsigned long flags;
 	const char *device;
diff --git a/miscutils/last.c b/miscutils/last.c
index fc5916ec2..f4d9a812e 100644
--- a/miscutils/last.c
+++ b/miscutils/last.c
@@ -27,7 +27,7 @@
 #endif
 
 int last_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int last_main(int argc, char **argv)
+int last_main(int argc, char **argv ATTRIBUTE_UNUSED)
 {
 	struct utmp ut;
 	int n, file = STDIN_FILENO;
diff --git a/miscutils/microcom.c b/miscutils/microcom.c
index 5219335a6..5ce430a03 100644
--- a/miscutils/microcom.c
+++ b/miscutils/microcom.c
@@ -41,7 +41,7 @@ static int xset1(int fd, struct termios *tio, const char *device)
 }
 
 int microcom_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int microcom_main(int argc, char **argv)
+int microcom_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int sfd;
 	int nfd;
diff --git a/miscutils/strings.c b/miscutils/strings.c
index d75beccea..57a2c0a17 100644
--- a/miscutils/strings.c
+++ b/miscutils/strings.c
@@ -17,7 +17,7 @@
 #define SIZE			8
 
 int strings_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int strings_main(int argc, char **argv)
+int strings_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int n, c, status = EXIT_SUCCESS;
 	unsigned opt;
diff --git a/modutils/insmod.c b/modutils/insmod.c
index 4620f6f95..079de6940 100644
--- a/modutils/insmod.c
+++ b/modutils/insmod.c
@@ -651,7 +651,7 @@ static struct obj_symbol *arch_new_symbol(void);
 
 static enum obj_reloc arch_apply_relocation(struct obj_file *f,
 				      struct obj_section *targsec,
-				      struct obj_section *symsec,
+				      /*struct obj_section *symsec,*/
 				      struct obj_symbol *sym,
 				      ElfW(RelM) *rel, ElfW(Addr) value);
 
@@ -792,8 +792,9 @@ static char *m_fullName;
 /*======================================================================*/
 
 
-static int check_module_name_match(const char *filename, struct stat *statbuf,
-				void *userdata, int depth)
+static int check_module_name_match(const char *filename,
+		struct stat *statbuf ATTRIBUTE_UNUSED,
+		void *userdata, int depth ATTRIBUTE_UNUSED)
 {
 	char *fullname = (char *) userdata;
 	char *tmp;
@@ -835,7 +836,7 @@ static struct obj_symbol *arch_new_symbol(void)
 static enum obj_reloc
 arch_apply_relocation(struct obj_file *f,
 				struct obj_section *targsec,
-				struct obj_section *symsec,
+				/*struct obj_section *symsec,*/
 				struct obj_symbol *sym,
 				ElfW(RelM) *rel, ElfW(Addr) v)
 {
@@ -1751,7 +1752,7 @@ static int arch_list_add(ElfW(RelM) *rel, struct arch_list_entry **list,
 
 #if defined(USE_SINGLE)
 
-static int arch_single_init(ElfW(RelM) *rel, struct arch_single_entry *single,
+static int arch_single_init(/*ElfW(RelM) *rel,*/ struct arch_single_entry *single,
 			     int offset, int size)
 {
 	if (single->allocated == 0) {
@@ -1899,7 +1900,7 @@ static void arch_create_got(struct obj_file *f)
 #if defined(USE_GOT_ENTRIES)
 			if (got_allocate) {
 				got_offset += arch_single_init(
-						rel, &intsym->gotent,
+						/*rel,*/ &intsym->gotent,
 						got_offset, GOT_ENTRY_SIZE);
 
 				got_needed = 1;
@@ -1913,7 +1914,7 @@ static void arch_create_got(struct obj_file *f)
 						plt_offset, PLT_ENTRY_SIZE);
 #else
 				plt_offset += arch_single_init(
-						rel, &intsym->pltent,
+						/*rel,*/ &intsym->pltent,
 						plt_offset, PLT_ENTRY_SIZE);
 #endif
 				plt_needed = 1;
@@ -3220,7 +3221,7 @@ static int obj_relocate(struct obj_file *f, ElfW(Addr) base)
 
 			/* Do it! */
 			switch (arch_apply_relocation
-					(f, targsec, symsec, intsym, rel, value)
+					(f, targsec, /*symsec,*/ intsym, rel, value)
 			) {
 			case obj_reloc_ok:
 				break;
@@ -3299,7 +3300,7 @@ static int obj_create_image(struct obj_file *f, char *image)
 
 /*======================================================================*/
 
-static struct obj_file *obj_load(FILE * fp, int loadprogbits)
+static struct obj_file *obj_load(FILE * fp, int loadprogbits ATTRIBUTE_UNUSED)
 {
 	struct obj_file *f;
 	ElfW(Shdr) * section_headers;
@@ -4193,9 +4194,9 @@ static const char *moderror(int err)
 
 #if !ENABLE_FEATURE_2_4_MODULES
 int insmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int insmod_main(int argc, char **argv)
+int insmod_main(int argc ATTRIBUTE_UNUSED, char **argv)
 #else
-static int insmod_ng_main(int argc, char **argv)
+static int insmod_ng_main(int argc ATTRIBUTE_UNUSED, char **argv)
 #endif
 {
 	long ret;
diff --git a/modutils/lsmod.c b/modutils/lsmod.c
index f1f78ff9f..baf0e2a9d 100644
--- a/modutils/lsmod.c
+++ b/modutils/lsmod.c
@@ -141,7 +141,7 @@ int lsmod_main(int argc, char **argv)
 #else /* CONFIG_FEATURE_QUERY_MODULE_INTERFACE */
 
 int lsmod_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int lsmod_main(int argc, char **argv)
+int lsmod_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	FILE *file = xfopen("/proc/modules", "r");
 
diff --git a/networking/arp.c b/networking/arp.c
index 36985fc5a..c9b9d1d0d 100644
--- a/networking/arp.c
+++ b/networking/arp.c
@@ -435,7 +435,7 @@ static int arp_show(char *name)
 }
 
 int arp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int arp_main(int argc, char **argv)
+int arp_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *hw_type;
 	char *protocol;
diff --git a/networking/arping.c b/networking/arping.c
index 2277ec55e..6a17b18ee 100644
--- a/networking/arping.c
+++ b/networking/arping.c
@@ -245,7 +245,7 @@ static bool recv_pack(unsigned char *buf, int len, struct sockaddr_ll *FROM)
 }
 
 int arping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int arping_main(int argc, char **argv)
+int arping_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	const char *device = "eth0";
 	char *source = NULL;
diff --git a/networking/dnsd.c b/networking/dnsd.c
index 0a5278377..b269bc52a 100644
--- a/networking/dnsd.c
+++ b/networking/dnsd.c
@@ -321,15 +321,15 @@ static int process_packet(uint8_t * buf)
 /*
  * Exit on signal
  */
-static void interrupt(int x)
+static void interrupt(int sig)
 {
 	/* unlink("/var/run/dnsd.lock"); */
 	bb_error_msg("interrupt, exiting\n");
-	exit(2);
+	kill_myself_with_sig(sig);
 }
 
 int dnsd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int dnsd_main(int argc, char **argv)
+int dnsd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	const char *listen_interface = "0.0.0.0";
 	char *sttl, *sport;
@@ -387,6 +387,9 @@ int dnsd_main(int argc, char **argv)
 // Or else we can exhibit usual UDP ugliness:
 // [ip1.multihomed.ip2] <=  query to ip1  <= peer
 // [ip1.multihomed.ip2] => reply from ip2 => peer (confused)
+
+// TODO: recv_from_to
+
 		r = recvfrom(udps, buf, sizeof(buf), 0, &lsa->u.sa, &fromlen);
 		if (OPT_verbose)
 			bb_info_msg("Got UDP packet");
diff --git a/networking/ftpgetput.c b/networking/ftpgetput.c
index 91f6fcd0d..6e2d96093 100644
--- a/networking/ftpgetput.c
+++ b/networking/ftpgetput.c
@@ -297,7 +297,7 @@ static const char ftpgetput_longopts[] ALIGN1 =
 #endif
 
 int ftpgetput_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ftpgetput_main(int argc, char **argv)
+int ftpgetput_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	/* content-length of the file */
 	unsigned opt;
diff --git a/networking/httpd.c b/networking/httpd.c
index 7b7446ed9..54f288c7a 100644
--- a/networking/httpd.c
+++ b/networking/httpd.c
@@ -1754,7 +1754,7 @@ static Htaccess_Proxy *find_proxy_entry(const char *url)
  * Handle timeouts
  */
 static void exit_on_signal(int sig) ATTRIBUTE_NORETURN;
-static void exit_on_signal(int sig)
+static void exit_on_signal(int sig ATTRIBUTE_UNUSED)
 {
 	send_headers_and_exit(HTTP_REQUEST_TIMEOUT);
 }
@@ -2275,7 +2275,7 @@ enum {
 
 
 int httpd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int httpd_main(int argc, char **argv)
+int httpd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int server_socket = server_socket; /* for gcc */
 	unsigned opt;
diff --git a/networking/ifenslave.c b/networking/ifenslave.c
index 76aaa7614..1e3d5bb95 100644
--- a/networking/ifenslave.c
+++ b/networking/ifenslave.c
@@ -150,7 +150,7 @@ static int release(char *master_ifname, char *slave_ifname);
 
 
 int ifenslave_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ifenslave_main(int argc, char **argv)
+int ifenslave_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *master_ifname, *slave_ifname;
 	int rv;
diff --git a/networking/ifupdown.c b/networking/ifupdown.c
index 58e69530c..6aa929a30 100644
--- a/networking/ifupdown.c
+++ b/networking/ifupdown.c
@@ -530,7 +530,7 @@ static int dhcp_down(struct interface_defn_t *ifd, execfn *exec)
 #endif
 }
 
-static int manual_up_down(struct interface_defn_t *ifd, execfn *exec)
+static int manual_up_down(struct interface_defn_t *ifd ATTRIBUTE_UNUSED, execfn *exec ATTRIBUTE_UNUSED)
 {
 	return 1;
 }
diff --git a/networking/inetd.c b/networking/inetd.c
index 41824dbc8..0ddfa6b45 100644
--- a/networking/inetd.c
+++ b/networking/inetd.c
@@ -1128,7 +1128,7 @@ static void clean_up_and_exit(int sig ATTRIBUTE_UNUSED)
 }
 
 int inetd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int inetd_main(int argc, char **argv)
+int inetd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct sigaction sa, saved_pipe_handler;
 	servtab_t *sep, *sep2;
@@ -1492,7 +1492,7 @@ static void init_ring(void)
 }
 /* Character generator. MMU arches only. */
 /* ARGSUSED */
-static void chargen_stream(int s, servtab_t *sep)
+static void chargen_stream(int s, servtab_t *sep ATTRIBUTE_UNUSED)
 {
 	char *rs;
 	int len;
diff --git a/networking/interface.c b/networking/interface.c
index 04d12b37e..367d2b0bc 100644
--- a/networking/interface.c
+++ b/networking/interface.c
@@ -237,7 +237,7 @@ static char *UNSPEC_print(unsigned char *ptr)
 }
 
 /* Display an UNSPEC socket address. */
-static const char *UNSPEC_sprint(struct sockaddr *sap, int numeric)
+static const char *UNSPEC_sprint(struct sockaddr *sap, int numeric ATTRIBUTE_UNUSED)
 {
 	if (sap->sa_family == 0xFFFF || sap->sa_family == 0)
 		return "[NONE SET]";
diff --git a/networking/ip.c b/networking/ip.c
index 5d9785194..bb409c5ce 100644
--- a/networking/ip.c
+++ b/networking/ip.c
@@ -37,35 +37,35 @@ static int ip_do(int (*ip_func)(char **argv), char **argv)
 
 #if ENABLE_FEATURE_IP_ADDRESS
 int ipaddr_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ipaddr_main(int argc, char **argv)
+int ipaddr_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
     return ip_do(do_ipaddr, argv);
 }
 #endif
 #if ENABLE_FEATURE_IP_LINK
 int iplink_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int iplink_main(int argc, char **argv)
+int iplink_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
     return ip_do(do_iplink, argv);
 }
 #endif
 #if ENABLE_FEATURE_IP_ROUTE
 int iproute_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int iproute_main(int argc, char **argv)
+int iproute_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
     return ip_do(do_iproute, argv);
 }
 #endif
 #if ENABLE_FEATURE_IP_RULE
 int iprule_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int iprule_main(int argc, char **argv)
+int iprule_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
     return ip_do(do_iprule, argv);
 }
 #endif
 #if ENABLE_FEATURE_IP_TUNNEL
 int iptunnel_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int iptunnel_main(int argc, char **argv)
+int iptunnel_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
     return ip_do(do_iptunnel, argv);
 }
@@ -73,7 +73,7 @@ int iptunnel_main(int argc, char **argv)
 
 
 int ip_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ip_main(int argc, char **argv)
+int ip_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	static const char keywords[] ALIGN1 =
 		USE_FEATURE_IP_ADDRESS("address\0")
diff --git a/networking/isrv_identd.c b/networking/isrv_identd.c
index 33338572d..d60c9fbaf 100644
--- a/networking/isrv_identd.c
+++ b/networking/isrv_identd.c
@@ -76,7 +76,7 @@ static int do_rd(int fd, void **paramp)
 	return retval;
 }
 
-static int do_timeout(void **paramp)
+static int do_timeout(void **paramp ATTRIBUTE_UNUSED)
 {
 	return 1; /* terminate session */
 }
@@ -93,7 +93,7 @@ static void inetd_mode(void)
 }
 
 int fakeidentd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int fakeidentd_main(int argc, char **argv)
+int fakeidentd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	enum {
 		OPT_foreground = 0x1,
diff --git a/networking/libiproute/ll_map.c b/networking/libiproute/ll_map.c
index 7b5de92c2..3cfc9ccec 100644
--- a/networking/libiproute/ll_map.c
+++ b/networking/libiproute/ll_map.c
@@ -39,7 +39,9 @@ static struct idxmap *find_by_index(int idx)
 	return NULL;
 }
 
-int ll_remember_index(struct sockaddr_nl *who, struct nlmsghdr *n, void *arg)
+int ll_remember_index(struct sockaddr_nl *who ATTRIBUTE_UNUSED,
+		struct nlmsghdr *n,
+		void *arg ATTRIBUTE_UNUSED)
 {
 	int h;
 	struct ifinfomsg *ifi = NLMSG_DATA(n);
diff --git a/networking/nc_bloaty.c b/networking/nc_bloaty.c
index ce4829584..34f715fc5 100644
--- a/networking/nc_bloaty.c
+++ b/networking/nc_bloaty.c
@@ -177,7 +177,7 @@ static void unarm(void)
 }
 
 /* timeout and other signal handling cruft */
-static void tmtravel(int sig)
+static void tmtravel(int sig ATTRIBUTE_UNUSED)
 {
 	unarm();
 	longjmp(jbuf, 1);
diff --git a/networking/netstat.c b/networking/netstat.c
index 399ff9b42..fd8d8ecf3 100644
--- a/networking/netstat.c
+++ b/networking/netstat.c
@@ -486,7 +486,7 @@ static void do_info(const char *file, const char *name, int (*proc)(int, char *)
 }
 
 int netstat_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int netstat_main(int argc, char **argv)
+int netstat_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	const char *net_conn_line_header = PRINT_NET_CONN_HEADER;
 	unsigned opt;
diff --git a/networking/ping.c b/networking/ping.c
index 11138c036..93b2e02f1 100644
--- a/networking/ping.c
+++ b/networking/ping.c
@@ -174,7 +174,7 @@ static void ping6(len_and_sockaddr *lsa)
 #endif
 
 int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ping_main(int argc, char **argv)
+int ping_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	len_and_sockaddr *lsa;
 #if ENABLE_PING6
@@ -495,7 +495,7 @@ static void unpack4(char *buf, int sz, struct sockaddr_in *from)
 	}
 }
 #if ENABLE_PING6
-static void unpack6(char *packet, int sz, struct sockaddr_in6 *from, int hoplimit)
+static void unpack6(char *packet, int sz, /*struct sockaddr_in6 *from,*/ int hoplimit)
 {
 	struct icmp6_hdr *icmppkt;
 	char buf[INET6_ADDRSTRLEN];
@@ -658,7 +658,7 @@ static void ping6(len_and_sockaddr *lsa)
 				hoplimit = *(int*)CMSG_DATA(mp);
 			}
 		}
-		unpack6(packet, c, &from, hoplimit);
+		unpack6(packet, c, /*&from,*/ hoplimit);
 		if (pingcount > 0 && nreceived >= pingcount)
 			break;
 	}
@@ -683,7 +683,7 @@ static void ping(len_and_sockaddr *lsa)
 }
 
 int ping_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ping_main(int argc, char **argv)
+int ping_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	len_and_sockaddr *lsa;
 	char *opt_c, *opt_s;
diff --git a/networking/pscan.c b/networking/pscan.c
index 830419371..022d21254 100644
--- a/networking/pscan.c
+++ b/networking/pscan.c
@@ -31,7 +31,7 @@ static const char *port_name(unsigned port)
 #define MONOTONIC_US() ((unsigned)monotonic_us())
 
 int pscan_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int pscan_main(int argc, char **argv)
+int pscan_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	const char *opt_max_port = "1024";      /* -P: default max port */
 	const char *opt_min_port = "1";         /* -p: default min port */
diff --git a/networking/route.c b/networking/route.c
index 6f945b9f8..53e3988c1 100644
--- a/networking/route.c
+++ b/networking/route.c
@@ -539,7 +539,7 @@ void bb_displayroutes(int noresolve, int netstatfmt)
 
 #if ENABLE_FEATURE_IPV6
 
-static void INET6_displayroutes(int noresolve)
+static void INET6_displayroutes(void)
 {
 	char addr6[128], *naddr6;
 	/* In addr6x, we store both 40-byte ':'-delimited ipv6 addresses.
@@ -642,7 +642,7 @@ static const char tbl_verb[] ALIGN1 =
 ;
 
 int route_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int route_main(int argc, char **argv)
+int route_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	unsigned opt;
 	int what;
@@ -675,7 +675,7 @@ int route_main(int argc, char **argv)
 		int noresolve = (opt & ROUTE_OPT_n) ? 0x0fff : 0;
 #if ENABLE_FEATURE_IPV6
 		if (opt & ROUTE_OPT_INET6)
-			INET6_displayroutes(noresolve);
+			INET6_displayroutes();
 		else
 #endif
 			bb_displayroutes(noresolve, opt & ROUTE_OPT_e);
diff --git a/networking/sendmail.c b/networking/sendmail.c
index eb356dcf5..241028b92 100644
--- a/networking/sendmail.c
+++ b/networking/sendmail.c
@@ -252,7 +252,7 @@ static void pop3_message(const char *filename)
 #endif
 
 int sendgetmail_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int sendgetmail_main(int argc, char **argv)
+int sendgetmail_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	llist_t *opt_recipients = NULL;
 
diff --git a/networking/slattach.c b/networking/slattach.c
index 1987eb39c..3ffbb3ba8 100644
--- a/networking/slattach.c
+++ b/networking/slattach.c
@@ -114,13 +114,13 @@ static void set_state(struct termios *state, int encap)
 	}
 }
 
-static void sig_handler(int signo)
+static void sig_handler(int signo ATTRIBUTE_UNUSED)
 {
 	restore_state_and_exit(0);
 }
 
 int slattach_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int slattach_main(int argc, char **argv)
+int slattach_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	/* Line discipline code table */
 	static const char proto_names[] ALIGN1 =
diff --git a/networking/telnetd.c b/networking/telnetd.c
index 05de49e8a..20c57925f 100644
--- a/networking/telnetd.c
+++ b/networking/telnetd.c
@@ -338,7 +338,7 @@ free_session(struct tsession *ts)
 
 #endif
 
-static void handle_sigchld(int sig)
+static void handle_sigchld(int sig ATTRIBUTE_UNUSED)
 {
 	pid_t pid;
 	struct tsession *ts;
@@ -360,7 +360,7 @@ static void handle_sigchld(int sig)
 }
 
 int telnetd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int telnetd_main(int argc, char **argv)
+int telnetd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	fd_set rdfdset, wrfdset;
 	unsigned opt;
diff --git a/networking/tftp.c b/networking/tftp.c
index 6cad295e3..14c340b22 100644
--- a/networking/tftp.c
+++ b/networking/tftp.c
@@ -392,7 +392,7 @@ static int tftp( USE_GETPUT(const int cmd,)
 }
 
 int tftp_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int tftp_main(int argc, char **argv)
+int tftp_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	len_and_sockaddr *peer_lsa;
 	const char *localfile = NULL;
diff --git a/networking/udhcp/dhcpc.c b/networking/udhcp/dhcpc.c
index 7fca184ab..576b1cbb8 100644
--- a/networking/udhcp/dhcpc.c
+++ b/networking/udhcp/dhcpc.c
@@ -129,7 +129,7 @@ static uint8_t* alloc_dhcp_option(int code, const char *str, int extra)
 
 
 int udhcpc_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int udhcpc_main(int argc, char **argv)
+int udhcpc_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	uint8_t *temp, *message;
 	char *str_c, *str_V, *str_h, *str_F, *str_r, *str_T, *str_A, *str_t;
diff --git a/networking/udhcp/dhcpd.c b/networking/udhcp/dhcpd.c
index eb7323da7..263719657 100644
--- a/networking/udhcp/dhcpd.c
+++ b/networking/udhcp/dhcpd.c
@@ -23,7 +23,7 @@ struct dhcpOfferedAddr *leases;
 
 
 int udhcpd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int udhcpd_main(int argc, char **argv)
+int udhcpd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	fd_set rfds;
 	struct timeval tv;
diff --git a/networking/udhcp/dumpleases.c b/networking/udhcp/dumpleases.c
index 218e6bc57..83b384177 100644
--- a/networking/udhcp/dumpleases.c
+++ b/networking/udhcp/dumpleases.c
@@ -8,7 +8,7 @@
 #include "dhcpd.h"
 
 int dumpleases_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int dumpleases_main(int argc, char **argv)
+int dumpleases_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int fd;
 	int i;
diff --git a/networking/wget.c b/networking/wget.c
index a77a2add7..dc1dc2ad9 100644
--- a/networking/wget.c
+++ b/networking/wget.c
@@ -387,7 +387,7 @@ static char *gethdr(char *buf, size_t bufsiz, FILE *fp /*, int *istrunc*/)
 
 
 int wget_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int wget_main(int argc, char **argv)
+int wget_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char buf[512];
 	struct host_info server, target;
diff --git a/printutils/lpd.c b/printutils/lpd.c
index 916fd6213..49e3fd744 100644
--- a/printutils/lpd.c
+++ b/printutils/lpd.c
@@ -11,7 +11,7 @@
 // TODO: xmalloc_reads is vulnerable to remote OOM attack!
 
 int lpd_main(int argc, char *argv[]) MAIN_EXTERNALLY_VISIBLE;
-int lpd_main(int argc, char *argv[])
+int lpd_main(int argc ATTRIBUTE_UNUSED, char *argv[])
 {
 	int spooling;
 	char *s, *queue;
diff --git a/printutils/lpr.c b/printutils/lpr.c
index 153e6ab96..5313d5a20 100644
--- a/printutils/lpr.c
+++ b/printutils/lpr.c
@@ -42,7 +42,7 @@ static void get_response_or_say_and_die(int fd, const char *errmsg)
 }
 
 int lpqr_main(int argc, char *argv[]) MAIN_EXTERNALLY_VISIBLE;
-int lpqr_main(int argc, char *argv[])
+int lpqr_main(int argc ATTRIBUTE_UNUSED, char *argv[])
 {
 	enum {
 		OPT_P           = 1 << 0, // -P queue[@host[:port]]. If no -P is given use $PRINTER, then "lp@localhost:515"
diff --git a/procps/fuser.c b/procps/fuser.c
index d625b16ab..48c9bdc1e 100644
--- a/procps/fuser.c
+++ b/procps/fuser.c
@@ -267,7 +267,7 @@ static int kill_pid_list(pid_list *plist, int sig)
 }
 
 int fuser_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int fuser_main(int argc, char **argv)
+int fuser_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	pid_list *plist;
 	inode_list *ilist;
diff --git a/procps/nmeter.c b/procps/nmeter.c
index 7ab2865c8..b6e754b7a 100644
--- a/procps/nmeter.c
+++ b/procps/nmeter.c
@@ -275,7 +275,7 @@ typedef struct a { \
 S_STAT(s_stat)
 S_STAT_END(s_stat)
 
-static void collect_literal(s_stat *s)
+static void collect_literal(s_stat *s ATTRIBUTE_UNUSED)
 {
 }
 
@@ -294,7 +294,7 @@ static s_stat* init_delay(const char *param)
 	return NULL;
 }
 
-static s_stat* init_cr(const char *param)
+static s_stat* init_cr(const char *param ATTRIBUTE_UNUSED)
 {
 	final_str = "\r";
 	return (s_stat*)0;
@@ -436,7 +436,7 @@ static void collect_ctx(ctx_stat *s)
 	scale(data[0] - old);
 }
 
-static s_stat* init_ctx(const char *param)
+static s_stat* init_ctx(const char *param ATTRIBUTE_UNUSED)
 {
 	ctx_stat *s = xmalloc(sizeof(ctx_stat));
 	s->collect = collect_ctx;
@@ -478,7 +478,7 @@ static void collect_blk(blk_stat *s)
 	scale(data[1]*512);
 }
 
-static s_stat* init_blk(const char *param)
+static s_stat* init_blk(const char *param ATTRIBUTE_UNUSED)
 {
 	blk_stat *s = xmalloc(sizeof(blk_stat));
 	s->collect = collect_blk;
@@ -491,7 +491,7 @@ S_STAT(fork_stat)
 	ullong old;
 S_STAT_END(fork_stat)
 
-static void collect_thread_nr(fork_stat *s)
+static void collect_thread_nr(fork_stat *s ATTRIBUTE_UNUSED)
 {
 	ullong data[1];
 
@@ -660,7 +660,7 @@ static s_stat* init_mem(const char *param)
 S_STAT(swp_stat)
 S_STAT_END(swp_stat)
 
-static void collect_swp(swp_stat *s)
+static void collect_swp(swp_stat *s ATTRIBUTE_UNUSED)
 {
 	ullong s_total[1];
 	ullong s_free[1];
@@ -673,7 +673,7 @@ static void collect_swp(swp_stat *s)
 	scale((s_total[0]-s_free[0]) << 10);
 }
 
-static s_stat* init_swp(const char *param)
+static s_stat* init_swp(const char *param ATTRIBUTE_UNUSED)
 {
 	swp_stat *s = xmalloc(sizeof(swp_stat));
 	s->collect = collect_swp;
@@ -684,7 +684,7 @@ static s_stat* init_swp(const char *param)
 S_STAT(fd_stat)
 S_STAT_END(fd_stat)
 
-static void collect_fd(fd_stat *s)
+static void collect_fd(fd_stat *s ATTRIBUTE_UNUSED)
 {
 	ullong data[2];
 
@@ -696,7 +696,7 @@ static void collect_fd(fd_stat *s)
 	scale(data[0] - data[1]);
 }
 
-static s_stat* init_fd(const char *param)
+static s_stat* init_fd(const char *param ATTRIBUTE_UNUSED)
 {
 	fd_stat *s = xmalloc(sizeof(fd_stat));
 	s->collect = collect_fd;
diff --git a/procps/pgrep.c b/procps/pgrep.c
index e4dfacb54..1ffc87db0 100644
--- a/procps/pgrep.c
+++ b/procps/pgrep.c
@@ -45,7 +45,7 @@ static void act(unsigned pid, char *cmd, int signo, unsigned opt)
 }
 
 int pgrep_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int pgrep_main(int argc, char **argv)
+int pgrep_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	unsigned pid = getpid();
 	int signo = SIGTERM;
diff --git a/procps/pidof.c b/procps/pidof.c
index 86d1957a6..46e646d6e 100644
--- a/procps/pidof.c
+++ b/procps/pidof.c
@@ -17,7 +17,7 @@ enum {
 };
 
 int pidof_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int pidof_main(int argc, char **argv)
+int pidof_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	unsigned first = 1;
 	unsigned opt;
diff --git a/procps/ps.c b/procps/ps.c
index f9d346ccf..647e03fc4 100644
--- a/procps/ps.c
+++ b/procps/ps.c
@@ -422,7 +422,7 @@ static void format_process(const procps_status_t *ps)
 }
 
 int ps_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ps_main(int argc, char **argv)
+int ps_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	procps_status_t *p;
 	llist_t* opt_o = NULL;
diff --git a/procps/renice.c b/procps/renice.c
index ab0d3a1c4..d2dcf152c 100644
--- a/procps/renice.c
+++ b/procps/renice.c
@@ -27,7 +27,7 @@ void BUG_bad_PRIO_PGRP(void);
 void BUG_bad_PRIO_USER(void);
 
 int renice_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int renice_main(int argc, char **argv)
+int renice_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	static const char Xetpriority_msg[] ALIGN1 = "%cetpriority";
 
diff --git a/procps/sysctl.c b/procps/sysctl.c
index 3a0af02d2..1995382ad 100644
--- a/procps/sysctl.c
+++ b/procps/sysctl.c
@@ -57,7 +57,7 @@ enum {
 };
 
 int sysctl_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int sysctl_main(int argc, char **argv)
+int sysctl_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int retval;
 	int opt;
diff --git a/procps/top.c b/procps/top.c
index f4bb5094a..fdd7584c8 100644
--- a/procps/top.c
+++ b/procps/top.c
@@ -735,7 +735,7 @@ enum {
 };
 
 int top_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int top_main(int argc, char **argv)
+int top_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int count, lines, col;
 	unsigned interval;
diff --git a/procps/uptime.c b/procps/uptime.c
index 07e8d607d..b729055a5 100644
--- a/procps/uptime.c
+++ b/procps/uptime.c
@@ -26,7 +26,7 @@
 
 
 int uptime_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int uptime_main(int argc, char **argv)
+int uptime_main(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	int updays, uphours, upminutes;
 	struct sysinfo info;
diff --git a/procps/watch.c b/procps/watch.c
index b4955258e..5b774e808 100644
--- a/procps/watch.c
+++ b/procps/watch.c
@@ -24,7 +24,7 @@
 // (procps 3.x and procps 2.x are forks, not newer/older versions of the same)
 
 int watch_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int watch_main(int argc, char **argv)
+int watch_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	unsigned opt;
 	unsigned period = 2;
diff --git a/runit/chpst.c b/runit/chpst.c
index b306974bb..fcac8ee3c 100644
--- a/runit/chpst.c
+++ b/runit/chpst.c
@@ -290,7 +290,7 @@ static void envdir(int, char **) ATTRIBUTE_NORETURN;
 static void softlimit(int, char **) ATTRIBUTE_NORETURN;
 
 int chpst_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int chpst_main(int argc, char **argv)
+int chpst_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	INIT_G();
 
@@ -349,7 +349,7 @@ int chpst_main(int argc, char **argv)
 	bb_perror_msg_and_die("exec %s", argv[0]);
 }
 
-static void setuidgid(int argc, char **argv)
+static void setuidgid(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	const char *account;
 
@@ -361,7 +361,7 @@ static void setuidgid(int argc, char **argv)
 	bb_perror_msg_and_die("exec %s", argv[0]);
 }
 
-static void envuidgid(int argc, char **argv)
+static void envuidgid(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	const char *account;
 
@@ -373,7 +373,7 @@ static void envuidgid(int argc, char **argv)
 	bb_perror_msg_and_die("exec %s", argv[0]);
 }
 
-static void envdir(int argc, char **argv)
+static void envdir(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	const char *dir;
 
@@ -385,7 +385,7 @@ static void envdir(int argc, char **argv)
 	bb_perror_msg_and_die("exec %s", argv[0]);
 }
 
-static void softlimit(int argc, char **argv)
+static void softlimit(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *a,*c,*d,*f,*l,*m,*o,*p,*r,*s,*t;
 	getopt32(argv, "+a:c:d:f:l:m:o:p:r:s:t:",
diff --git a/runit/runsv.c b/runit/runsv.c
index 5d4e1584e..0da03e6b3 100644
--- a/runit/runsv.c
+++ b/runit/runsv.c
@@ -128,12 +128,12 @@ static void warn_cannot(const char *m)
 	bb_perror_msg("%s: warning: cannot %s", dir, m);
 }
 
-static void s_child(int sig_no)
+static void s_child(int sig_no ATTRIBUTE_UNUSED)
 {
 	write(selfpipe.wr, "", 1);
 }
 
-static void s_term(int sig_no)
+static void s_term(int sig_no ATTRIBUTE_UNUSED)
 {
 	sigterm = 1;
 	write(selfpipe.wr, "", 1); /* XXX */
@@ -432,7 +432,7 @@ static int ctrl(struct svdir *s, char c)
 }
 
 int runsv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int runsv_main(int argc, char **argv)
+int runsv_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct stat s;
 	int fd;
diff --git a/runit/runsvdir.c b/runit/runsvdir.c
index 0ab672ef4..bca5c901c 100644
--- a/runit/runsvdir.c
+++ b/runit/runsvdir.c
@@ -72,11 +72,11 @@ static void warnx(const char *m1)
 	warn3x(m1, "", "");
 }
 
-static void s_term(int sig_no)
+static void s_term(int sig_no ATTRIBUTE_UNUSED)
 {
 	exitsoon = 1;
 }
-static void s_hangup(int sig_no)
+static void s_hangup(int sig_no ATTRIBUTE_UNUSED)
 {
 	exitsoon = 2;
 }
@@ -207,7 +207,7 @@ static int setup_log(void)
 }
 
 int runsvdir_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int runsvdir_main(int argc, char **argv)
+int runsvdir_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct stat s;
 	dev_t last_dev = last_dev; /* for gcc */
diff --git a/runit/sv.c b/runit/sv.c
index 141f7a8bc..45d5572f8 100644
--- a/runit/sv.c
+++ b/runit/sv.c
@@ -293,7 +293,7 @@ static unsigned svstatus_print(const char *m)
 	return pid ? 1 : 2;
 }
 
-static int status(const char *unused)
+static int status(const char *unused ATTRIBUTE_UNUSED)
 {
 	int r;
 
diff --git a/runit/svlogd.c b/runit/svlogd.c
index c69cb545c..4458bd787 100644
--- a/runit/svlogd.c
+++ b/runit/svlogd.c
@@ -783,14 +783,14 @@ static int buffer_pread(/*int fd, */char *s, unsigned len)
 	return i;
 }
 
-static void sig_term_handler(int sig_no)
+static void sig_term_handler(int sig_no ATTRIBUTE_UNUSED)
 {
 	if (verbose)
 		bb_error_msg(INFO"sig%s received", "term");
 	exitasap = 1;
 }
 
-static void sig_child_handler(int sig_no)
+static void sig_child_handler(int sig_no ATTRIBUTE_UNUSED)
 {
 	int pid, l;
 
@@ -807,14 +807,14 @@ static void sig_child_handler(int sig_no)
 	}
 }
 
-static void sig_alarm_handler(int sig_no)
+static void sig_alarm_handler(int sig_no ATTRIBUTE_UNUSED)
 {
 	if (verbose)
 		bb_error_msg(INFO"sig%s received", "alarm");
 	rotateasap = 1;
 }
 
-static void sig_hangup_handler(int sig_no)
+static void sig_hangup_handler(int sig_no ATTRIBUTE_UNUSED)
 {
 	if (verbose)
 		bb_error_msg(INFO"sig%s received", "hangup");
diff --git a/shell/ash.c b/shell/ash.c
index 069909118..580918ceb 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -2472,7 +2472,7 @@ docd(const char *dest, int flags)
 }
 
 static int
-cdcmd(int argc, char **argv)
+cdcmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	const char *dest;
 	const char *path;
@@ -2536,7 +2536,7 @@ cdcmd(int argc, char **argv)
 }
 
 static int
-pwdcmd(int argc, char **argv)
+pwdcmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	int flags;
 	const char *dir = curdir;
@@ -3138,19 +3138,20 @@ printalias(const struct alias *ap)
  * TODO - sort output
  */
 static int
-aliascmd(int argc, char **argv)
+aliascmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *n, *v;
 	int ret = 0;
 	struct alias *ap;
 
-	if (argc == 1) {
+	if (!argv[1]) {
 		int i;
 
-		for (i = 0; i < ATABSIZE; i++)
+		for (i = 0; i < ATABSIZE; i++) {
 			for (ap = atab[i]; ap; ap = ap->next) {
 				printalias(ap);
 			}
+		}
 		return 0;
 	}
 	while ((n = *++argv) != NULL) {
@@ -3172,7 +3173,7 @@ aliascmd(int argc, char **argv)
 }
 
 static int
-unaliascmd(int argc, char **argv)
+unaliascmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	int i;
 
@@ -3245,7 +3246,7 @@ struct job {
 static pid_t backgndpid;        /* pid of last background process */
 static smallint job_warning;    /* user was warned about stopped jobs (can be 2, 1 or 0). */
 
-static struct job *makejob(union node *, int);
+static struct job *makejob(/*union node *,*/ int);
 static int forkshell(struct job *, union node *, int);
 static int waitforjob(struct job *);
 
@@ -3612,8 +3613,8 @@ setjobctl(int on)
 static int
 killcmd(int argc, char **argv)
 {
+	int i = 1;
 	if (argv[1] && strcmp(argv[1], "-l") != 0) {
-		int i = 1;
 		do {
 			if (argv[i][0] == '%') {
 				struct job *jp = getjob(argv[i], 0);
@@ -3675,7 +3676,7 @@ restartjob(struct job *jp, int mode)
 }
 
 static int
-fg_bgcmd(int argc, char **argv)
+fg_bgcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct job *jp;
 	FILE *out;
@@ -3962,7 +3963,7 @@ showjobs(FILE *out, int mode)
 }
 
 static int
-jobscmd(int argc, char **argv)
+jobscmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int mode, m;
 
@@ -4015,7 +4016,7 @@ getstatus(struct job *job)
 }
 
 static int
-waitcmd(int argc, char **argv)
+waitcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct job *job;
 	int retval;
@@ -4121,7 +4122,7 @@ growjobtab(void)
  * Called with interrupts off.
  */
 static struct job *
-makejob(union node *node, int nprocs)
+makejob(/*union node *node,*/ int nprocs)
 {
 	int i;
 	struct job *jp;
@@ -4156,7 +4157,7 @@ makejob(union node *node, int nprocs)
 	if (nprocs > 1) {
 		jp->ps = ckmalloc(nprocs * sizeof(struct procstat));
 	}
-	TRACE(("makejob(0x%lx, %d) returns %%%d\n", (long)node, nprocs,
+	TRACE(("makejob(%d) returns %%%d\n", nprocs,
 				jobno(jp)));
 	return jp;
 }
@@ -4484,7 +4485,7 @@ static void closescript(void);
 
 /* Called after fork(), in child */
 static void
-forkchild(struct job *jp, union node *n, int mode)
+forkchild(struct job *jp, /*union node *n,*/ int mode)
 {
 	int oldlvl;
 
@@ -4584,7 +4585,7 @@ forkshell(struct job *jp, union node *n, int mode)
 		ash_msg_and_raise_error("cannot fork");
 	}
 	if (pid == 0)
-		forkchild(jp, n, mode);
+		forkchild(jp, /*n,*/ mode);
 	else
 		forkparent(jp, n, mode, pid);
 	return pid;
@@ -5371,7 +5372,7 @@ evalbackcmd(union node *n, struct backcmd *result)
 
 		if (pipe(pip) < 0)
 			ash_msg_and_raise_error("pipe call failed");
-		jp = makejob(n, 1);
+		jp = makejob(/*n,*/ 1);
 		if (forkshell(jp, n, FORK_NOJOB) == 0) {
 			FORCE_INT_ON;
 			close(pip[0]);
@@ -5668,7 +5669,7 @@ argstr(char *p, int flag, struct strlist *var_str_list)
 }
 
 static char *
-scanleft(char *startp, char *rmesc, char *rmescend, char *str, int quotes,
+scanleft(char *startp, char *rmesc, char *rmescend ATTRIBUTE_UNUSED, char *str, int quotes,
 	int zero)
 {
 	char *loc;
@@ -6407,7 +6408,7 @@ expsort(struct strlist *str)
 }
 
 static void
-expandmeta(struct strlist *str, int flag)
+expandmeta(struct strlist *str /*, int flag*/)
 {
 	static const char metachars[] ALIGN1 = {
 		'*', '?', '[', 0
@@ -6488,7 +6489,7 @@ expandarg(union node *arg, struct arglist *arglist, int flag)
 		ifsbreakup(p, &exparg);
 		*exparg.lastp = NULL;
 		exparg.lastp = &exparg.list;
-		expandmeta(exparg.list, flag);
+		expandmeta(exparg.list /*, flag*/);
 	} else {
 		if (flag & EXP_REDIR) /*XXX - for now, just remove escapes */
 			rmescapes(p);
@@ -6838,7 +6839,7 @@ addcmdentry(char *name, struct cmdentry *entry)
 }
 
 static int
-hashcmd(int argc, char **argv)
+hashcmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	struct tblentry **pp;
 	struct tblentry *cmdp;
@@ -7139,7 +7140,7 @@ describe_command(char *command, int describe_command_verbose)
 }
 
 static int
-typecmd(int argc, char **argv)
+typecmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int i = 1;
 	int err = 0;
@@ -7150,7 +7151,7 @@ typecmd(int argc, char **argv)
 		i++;
 		verbose = 0;
 	}
-	while (i < argc) {
+	while (argv[i]) {
 		err |= describe_command(argv[i++], verbose);
 	}
 	return err;
@@ -7158,7 +7159,7 @@ typecmd(int argc, char **argv)
 
 #if ENABLE_ASH_CMDCMD
 static int
-commandcmd(int argc, char **argv)
+commandcmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	int c;
 	enum {
@@ -7768,7 +7769,7 @@ evalsubshell(union node *n, int flags)
 	if (!backgnd && flags & EV_EXIT && !trap[0])
 		goto nofork;
 	INT_OFF;
-	jp = makejob(n, 1);
+	jp = makejob(/*n,*/ 1);
 	if (forkshell(jp, n, backgnd) == 0) {
 		INT_ON;
 		flags |= EV_EXIT;
@@ -7843,7 +7844,7 @@ evalpipe(union node *n, int flags)
 		pipelen++;
 	flags |= EV_EXIT;
 	INT_OFF;
-	jp = makejob(n, pipelen);
+	jp = makejob(/*n,*/ pipelen);
 	prevfd = -1;
 	for (lp = n->npipe.cmdlist; lp; lp = lp->next) {
 		prehash(lp->n);
@@ -8098,7 +8099,7 @@ mklocal(char *name)
  * The "local" command.
  */
 static int
-localcmd(int argc, char **argv)
+localcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *name;
 
@@ -8110,21 +8111,21 @@ localcmd(int argc, char **argv)
 }
 
 static int
-falsecmd(int argc, char **argv)
+falsecmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	return 1;
 }
 
 static int
-truecmd(int argc, char **argv)
+truecmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	return 0;
 }
 
 static int
-execcmd(int argc, char **argv)
+execcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
-	if (argc > 1) {
+	if (argv[1]) {
 		iflag = 0;              /* exit on error */
 		mflag = 0;
 		optschanged();
@@ -8137,7 +8138,7 @@ execcmd(int argc, char **argv)
  * The return command.
  */
 static int
-returncmd(int argc, char **argv)
+returncmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	/*
 	 * If called outside a function, do what ksh does;
@@ -8296,7 +8297,7 @@ isassignment(const char *p)
 	return *q == '=';
 }
 static int
-bltincmd(int argc, char **argv)
+bltincmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	/* Preserve exitstatus of a previous possible redirection
 	 * as POSIX mandates */
@@ -8466,7 +8467,7 @@ evalcommand(union node *cmd, int flags)
 		/* Fork off a child process if necessary. */
 		if (!(flags & EV_EXIT) || trap[0]) {
 			INT_OFF;
-			jp = makejob(cmd, 1);
+			jp = makejob(/*cmd,*/ 1);
 			if (forkshell(jp, cmd, FORK_FG) != 0) {
 				exitstatus = waitforjob(jp);
 				INT_ON;
@@ -8596,9 +8597,9 @@ prehash(union node *n)
  * in the standard shell so we don't make it one here.
  */
 static int
-breakcmd(int argc, char **argv)
+breakcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
-	int n = argc > 1 ? number(argv[1]) : 1;
+	int n = argv[1] ? number(argv[1]) : 1;
 
 	if (n <= 0)
 		ash_msg_and_raise_error(illnum, argv[1]);
@@ -9095,7 +9096,7 @@ chkmail(void)
 }
 
 static void
-changemail(const char *val)
+changemail(const char *val ATTRIBUTE_UNUSED)
 {
 	mail_var_path_changed = 1;
 }
@@ -9247,13 +9248,13 @@ options(int cmdline)
  * The shift builtin command.
  */
 static int
-shiftcmd(int argc, char **argv)
+shiftcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int n;
 	char **ap1, **ap2;
 
 	n = 1;
-	if (argc > 1)
+	if (argv[1])
 		n = number(argv[1]);
 	if (n > shellparam.nparam)
 		ash_msg_and_raise_error("can't shift that many");
@@ -9308,11 +9309,11 @@ showvars(const char *sep_prefix, int on, int off)
  * The set command builtin.
  */
 static int
-setcmd(int argc, char **argv)
+setcmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	int retval;
 
-	if (argc == 1)
+	if (!argv[1])
 		return showvars(nullstr, 0, VUNSET);
 	INT_OFF;
 	retval = 1;
@@ -11015,20 +11016,19 @@ evalstring(char *s, int mask)
  * The eval command.
  */
 static int
-evalcmd(int argc, char **argv)
+evalcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *p;
 	char *concat;
-	char **ap;
 
-	if (argc > 1) {
+	if (argv[1]) {
 		p = argv[1];
-		if (argc > 2) {
+		argv += 2;
+		if (argv[0]) {
 			STARTSTACKSTR(concat);
-			ap = argv + 2;
 			for (;;) {
 				concat = stack_putstr(p, concat);
-				p = *ap++;
+				p = *argv++;
 				if (p == NULL)
 					break;
 				STPUTC(' ', concat);
@@ -11139,16 +11139,15 @@ dotcmd(int argc, char **argv)
 	for (sp = cmdenviron; sp; sp = sp->next)
 		setvareq(ckstrdup(sp->text), VSTRFIXED | VTEXTFIXED);
 
-	if (argc >= 2) {        /* That's what SVR2 does */
-		char *fullname;
-
-		fullname = find_dot_file(argv[1]);
-
-		if (argc > 2) {
+	if (argv[1]) {        /* That's what SVR2 does */
+		char *fullname = find_dot_file(argv[1]);
+		argv += 2;
+		argc -= 2;
+		if (argc) { /* argc > 0, argv[0] != NULL */
 			saveparam = shellparam;
 			shellparam.malloced = 0;
-			shellparam.nparam = argc - 2;
-			shellparam.p = argv + 2;
+			shellparam.nparam = argc;
+			shellparam.p = argv;
 		};
 
 		setinputfile(fullname, INPUT_PUSH_FILE);
@@ -11156,7 +11155,7 @@ dotcmd(int argc, char **argv)
 		cmdloop(0);
 		popfile();
 
-		if (argc > 2) {
+		if (argc) {
 			freeparam(&shellparam);
 			shellparam = saveparam;
 		};
@@ -11166,11 +11165,11 @@ dotcmd(int argc, char **argv)
 }
 
 static int
-exitcmd(int argc, char **argv)
+exitcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	if (stoppedjobs())
 		return 0;
-	if (argc > 1)
+	if (argv[1])
 		exitstatus = number(argv[1]);
 	raise_exception(EXEXIT);
 	/* NOTREACHED */
@@ -11404,7 +11403,7 @@ find_command(char *name, struct cmdentry *entry, int act, const char *path)
  * The trap builtin.
  */
 static int
-trapcmd(int argc, char **argv)
+trapcmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	char *action;
 	char **ap;
@@ -11457,7 +11456,7 @@ trapcmd(int argc, char **argv)
  * Lists available builtins
  */
 static int
-helpcmd(int argc, char **argv)
+helpcmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	int col, i;
 
@@ -11492,7 +11491,7 @@ helpcmd(int argc, char **argv)
  * The export and readonly commands.
  */
 static int
-exportcmd(int argc, char **argv)
+exportcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct var *vp;
 	char *name;
@@ -11543,7 +11542,7 @@ unsetfunc(const char *name)
  * with the same name.
  */
 static int
-unsetcmd(int argc, char **argv)
+unsetcmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	char **ap;
 	int i;
@@ -11581,7 +11580,7 @@ static const unsigned char timescmd_str[] ALIGN1 = {
 };
 
 static int
-timescmd(int ac, char **av)
+timescmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	long clk_tck, s, t;
 	const unsigned char *p;
@@ -11633,17 +11632,16 @@ dash_arith(const char *s)
  *  Copyright (C) 2003 Vladimir Oleynik <dzo@simtreas.ru>
  */
 static int
-letcmd(int argc, char **argv)
+letcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
-	char **ap;
-	arith_t i = 0;
+	arith_t i;
 
-	ap = argv + 1;
-	if (!*ap)
+	argv++;
+	if (!*argv)
 		ash_msg_and_raise_error("expression expected");
-	for (ap = argv + 1; *ap; ap++) {
-		i = dash_arith(*ap);
-	}
+	do {
+		i = dash_arith(*argv);
+	} while (*++argv);
 
 	return !i;
 }
@@ -11668,7 +11666,7 @@ typedef enum __rlimit_resource rlim_t;
  * This uses unbuffered input, which may be avoidable in some cases.
  */
 static int
-readcmd(int argc, char **argv)
+readcmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	char **ap;
 	int backslash;
@@ -11859,7 +11857,7 @@ readcmd(int argc, char **argv)
 }
 
 static int
-umaskcmd(int argc, char **argv)
+umaskcmd(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	static const char permuser[3] ALIGN1 = "ugo";
 	static const char permmode[3] ALIGN1 = "rwx";
@@ -12034,7 +12032,7 @@ printlim(enum limtype how, const struct rlimit *limit,
 }
 
 static int
-ulimitcmd(int argc, char **argv)
+ulimitcmd(int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
 {
 	int c;
 	rlim_t val = 0;
@@ -12868,7 +12866,7 @@ init(void)
  * Process the shell command line arguments.
  */
 static void
-procargs(int argc, char **argv)
+procargs(char **argv)
 {
 	int i;
 	const char *xminusc;
@@ -12876,7 +12874,7 @@ procargs(int argc, char **argv)
 
 	xargv = argv;
 	arg0 = xargv[0];
-	if (argc > 0)
+	/* if (xargv[0]) - mmm, this is always true! */
 		xargv++;
 	for (i = 0; i < NOPTS; i++)
 		optlist[i] = 2;
@@ -12976,7 +12974,7 @@ extern int etext();
  * is used to figure out how far we had gotten.
  */
 int ash_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ash_main(int argc, char **argv)
+int ash_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *shinit;
 	volatile int state;
@@ -13039,7 +13037,8 @@ int ash_main(int argc, char **argv)
 #endif
 	init();
 	setstackmark(&smark);
-	procargs(argc, argv);
+	procargs(argv);
+
 #if ENABLE_FEATURE_EDITING_SAVEHISTORY
 	if (iflag) {
 		const char *hp = lookupvar("HISTFILE");
diff --git a/shell/hush.c b/shell/hush.c
index c61607dd3..2d5697269 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -536,11 +536,13 @@ static int done_pipe(struct p_context *ctx, pipe_style type);
 static int redirect_dup_num(struct in_str *input);
 static int redirect_opt_num(o_string *o);
 #if ENABLE_HUSH_TICK
-static int process_command_subs(o_string *dest, struct p_context *ctx, struct in_str *input, const char *subst_end);
+static int process_command_subs(o_string *dest, /*struct p_context *ctx,*/
+		struct in_str *input, const char *subst_end);
 #endif
 static int parse_group(o_string *dest, struct p_context *ctx, struct in_str *input, int ch);
 static const char *lookup_param(const char *src);
-static int handle_dollar(o_string *dest, struct p_context *ctx, struct in_str *input);
+static int handle_dollar(o_string *dest, /*struct p_context *ctx,*/
+		struct in_str *input);
 static int parse_stream(o_string *dest, struct p_context *ctx, struct in_str *input0, const char *end_trigger);
 /*   setup: */
 static int parse_and_run_stream(struct in_str *inp, int parse_flag);
@@ -741,14 +743,14 @@ static void set_every_sighandler(void (*handler)(int))
 	signal(SIGCHLD, handler);
 }
 
-static void handler_ctrl_c(int sig)
+static void handler_ctrl_c(int sig ATTRIBUTE_UNUSED)
 {
 	debug_printf_jobs("got sig %d\n", sig);
 // as usual we can have all kinds of nasty problems with leaked malloc data here
 	siglongjmp(toplevel_jb, 1);
 }
 
-static void handler_ctrl_z(int sig)
+static void handler_ctrl_z(int sig ATTRIBUTE_UNUSED)
 {
 	pid_t pid;
 
@@ -3257,8 +3259,10 @@ static FILE *generate_stream_from_list(struct pipe *head)
 }
 
 /* Return code is exit status of the process that is run. */
-static int process_command_subs(o_string *dest, struct p_context *ctx,
-	struct in_str *input, const char *subst_end)
+static int process_command_subs(o_string *dest,
+		/*struct p_context *ctx,*/
+		struct in_str *input,
+		const char *subst_end)
 {
 	int retcode, ch, eol_cnt;
 	o_string result = NULL_O_STRING;
@@ -3351,7 +3355,7 @@ static const char *lookup_param(const char *src)
 }
 
 /* return code: 0 for OK, 1 for syntax error */
-static int handle_dollar(o_string *dest, struct p_context *ctx, struct in_str *input)
+static int handle_dollar(o_string *dest, /*struct p_context *ctx,*/ struct in_str *input)
 {
 	int ch = b_peek(input);  /* first character after the $ */
 	unsigned char quote_mask = dest->o_quote ? 0x80 : 0;
@@ -3409,7 +3413,7 @@ static int handle_dollar(o_string *dest, struct p_context *ctx, struct in_str *i
 #if ENABLE_HUSH_TICK
 		case '(':
 			b_getch(input);
-			process_command_subs(dest, ctx, input, ")");
+			process_command_subs(dest, /*ctx,*/ input, ")");
 			break;
 #endif
 		case '-':
@@ -3507,7 +3511,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
 			b_addqchr(dest, b_getch(input), dest->o_quote);
 			break;
 		case '$':
-			if (handle_dollar(dest, ctx, input) != 0) {
+			if (handle_dollar(dest, /*ctx,*/ input) != 0) {
 				debug_printf_parse("parse_stream return 1: handle_dollar returned non-0\n");
 				return 1;
 			}
@@ -3532,7 +3536,7 @@ static int parse_stream(o_string *dest, struct p_context *ctx,
 			break;
 #if ENABLE_HUSH_TICK
 		case '`':
-			process_command_subs(dest, ctx, input, "`");
+			process_command_subs(dest, /*ctx,*/ input, "`");
 			break;
 #endif
 		case '>':
diff --git a/shell/msh.c b/shell/msh.c
index 5ed6dfd1d..63f365962 100644
--- a/shell/msh.c
+++ b/shell/msh.c
@@ -589,7 +589,7 @@ static const struct builtincmd builtincmds[] = {
 };
 
 static struct op *scantree(struct op *);
-static struct op *dowholefile(int, int);
+static struct op *dowholefile(int /*, int*/);
 
 
 /* Globals */
@@ -1448,7 +1448,7 @@ static void next(int f)
 	PUSHIO(afile, f, filechar);
 }
 
-static void onintr(int s)					/* ANSI C requires a parameter */
+static void onintr(int s ATTRIBUTE_UNUSED) /* ANSI C requires a parameter */
 {
 	signal(SIGINT, onintr);
 	intr = 1;
@@ -1864,11 +1864,11 @@ static struct op *command(int cf)
 	return t;
 }
 
-static struct op *dowholefile(int type, int mark)
+static struct op *dowholefile(int type /*, int mark*/)
 {
 	struct op *t;
 
-	DBGPRINTF(("DOWHOLEFILE: enter, type=%d, mark=%d\n", type, mark));
+	DBGPRINTF(("DOWHOLEFILE: enter, type=%d\n", type /*, mark*/));
 
 	multiline++;
 	t = c_list();
@@ -2477,7 +2477,7 @@ static int execute(struct op *t, int *pin, int *pout, int no_fork)
 
 		newfile(evalstr(t->op_words[0], DOALL));
 
-		t->left = dowholefile(TLIST, 0);
+		t->left = dowholefile(TLIST /*, 0*/);
 		t->right = NULL;
 
 		outtree = outtree_save;
@@ -3155,7 +3155,7 @@ static int run(struct ioarg *argp, int (*f) (struct ioarg *))
  * built-in commands: doX
  */
 
-static int dohelp(struct op *t, char **args)
+static int dohelp(struct op *t ATTRIBUTE_UNUSED, char **args ATTRIBUTE_UNUSED)
 {
 	int col;
 	const struct builtincmd *x;
@@ -3191,12 +3191,12 @@ static int dohelp(struct op *t, char **args)
 	return EXIT_SUCCESS;
 }
 
-static int dolabel(struct op *t, char **args)
+static int dolabel(struct op *t ATTRIBUTE_UNUSED, char **args ATTRIBUTE_UNUSED)
 {
 	return 0;
 }
 
-static int dochdir(struct op *t, char **args)
+static int dochdir(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	const char *cp, *er;
 
@@ -3217,7 +3217,7 @@ static int dochdir(struct op *t, char **args)
 	return 1;
 }
 
-static int doshift(struct op *t, char **args)
+static int doshift(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	int n;
 
@@ -3236,7 +3236,7 @@ static int doshift(struct op *t, char **args)
 /*
  * execute login and newgrp directly
  */
-static int dologin(struct op *t, char **args)
+static int dologin(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	const char *cp;
 
@@ -3251,7 +3251,7 @@ static int dologin(struct op *t, char **args)
 	return 1;
 }
 
-static int doumask(struct op *t, char **args)
+static int doumask(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	int i;
 	char *cp;
@@ -3301,7 +3301,7 @@ static int doexec(struct op *t, char **args)
 	return 1;
 }
 
-static int dodot(struct op *t, char **args)
+static int dodot(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	int i;
 	const char *sp;
@@ -3355,7 +3355,7 @@ static int dodot(struct op *t, char **args)
 	return -1;
 }
 
-static int dowait(struct op *t, char **args)
+static int dowait(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	int i;
 	char *cp;
@@ -3371,7 +3371,7 @@ static int dowait(struct op *t, char **args)
 	return 0;
 }
 
-static int doread(struct op *t, char **args)
+static int doread(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	char *cp, **wp;
 	int nb = 0;
@@ -3398,12 +3398,12 @@ static int doread(struct op *t, char **args)
 	return nb <= 0;
 }
 
-static int doeval(struct op *t, char **args)
+static int doeval(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	return RUN(awordlist, args + 1, wdchar);
 }
 
-static int dotrap(struct op *t, char **args)
+static int dotrap(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	int n, i;
 	int resetsig;
@@ -3484,12 +3484,12 @@ static int getn(char *as)
 	return n * m;
 }
 
-static int dobreak(struct op *t, char **args)
+static int dobreak(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	return brkcontin(args[1], 1);
 }
 
-static int docontinue(struct op *t, char **args)
+static int docontinue(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	return brkcontin(args[1], 0);
 }
@@ -3517,7 +3517,7 @@ static int brkcontin(char *cp, int val)
 	/* NOTREACHED */
 }
 
-static int doexit(struct op *t, char **args)
+static int doexit(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	char *cp;
 
@@ -3533,13 +3533,13 @@ static int doexit(struct op *t, char **args)
 	return 0;
 }
 
-static int doexport(struct op *t, char **args)
+static int doexport(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	rdexp(args + 1, export, EXPORT);
 	return 0;
 }
 
-static int doreadonly(struct op *t, char **args)
+static int doreadonly(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	rdexp(args + 1, ronly, RONLY);
 	return 0;
@@ -3575,7 +3575,7 @@ static void badid(char *s)
 	err(": bad identifier");
 }
 
-static int doset(struct op *t, char **args)
+static int doset(struct op *t ATTRIBUTE_UNUSED, char **args)
 {
 	struct var *vp;
 	char *cp;
@@ -3650,7 +3650,7 @@ static void times_fmt(char *buf, clock_t val, unsigned clk_tck)
 #endif
 }
 
-static int dotimes(struct op *t, char **args)
+static int dotimes(struct op *t ATTRIBUTE_UNUSED, char **args ATTRIBUTE_UNUSED)
 {
 	struct tms buf;
 	unsigned clk_tck = sysconf(_SC_CLK_TCK);
diff --git a/sysklogd/klogd.c b/sysklogd/klogd.c
index 01d597178..983a59784 100644
--- a/sysklogd/klogd.c
+++ b/sysklogd/klogd.c
@@ -37,7 +37,7 @@ enum {
 };
 
 int klogd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int klogd_main(int argc, char **argv)
+int klogd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int i = i; /* silence gcc */
 	char *start;
diff --git a/sysklogd/logread.c b/sysklogd/logread.c
index 62846463c..6f4429fd9 100644
--- a/sysklogd/logread.c
+++ b/sysklogd/logread.c
@@ -68,7 +68,7 @@ static void interrupted(int sig ATTRIBUTE_UNUSED)
 }
 
 int logread_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int logread_main(int argc, char **argv)
+int logread_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int cur;
 	int log_semid; /* ipc semaphore id */
diff --git a/sysklogd/syslogd.c b/sysklogd/syslogd.c
index 596984e3f..371b5588f 100644
--- a/sysklogd/syslogd.c
+++ b/sysklogd/syslogd.c
@@ -633,7 +633,7 @@ static void do_syslogd(void)
 }
 
 int syslogd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int syslogd_main(int argc, char **argv)
+int syslogd_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char OPTION_DECL;
 
diff --git a/util-linux/dmesg.c b/util-linux/dmesg.c
index cdd385ede..9e834ffd3 100644
--- a/util-linux/dmesg.c
+++ b/util-linux/dmesg.c
@@ -13,7 +13,7 @@
 #include "libbb.h"
 
 int dmesg_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int dmesg_main(int argc, char **argv)
+int dmesg_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int len;
 	char *buf;
diff --git a/util-linux/fsck_minix.c b/util-linux/fsck_minix.c
index 63f915ac5..058e8bed7 100644
--- a/util-linux/fsck_minix.c
+++ b/util-linux/fsck_minix.c
@@ -1204,7 +1204,7 @@ void check2(void);
 #endif
 
 int fsck_minix_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int fsck_minix_main(int argc, char **argv)
+int fsck_minix_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct termios tmp;
 	int retcode = 0;
diff --git a/util-linux/hwclock.c b/util-linux/hwclock.c
index f226535fa..44522dfd7 100644
--- a/util-linux/hwclock.c
+++ b/util-linux/hwclock.c
@@ -91,7 +91,7 @@ static void from_sys_clock(int utc)
 #define HWCLOCK_OPT_RTCFILE     0x20
 
 int hwclock_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int hwclock_main(int argc, char **argv)
+int hwclock_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	unsigned opt;
 	int utc;
diff --git a/util-linux/ipcs.c b/util-linux/ipcs.c
index 97b98f300..4b5c597e5 100644
--- a/util-linux/ipcs.c
+++ b/util-linux/ipcs.c
@@ -559,7 +559,7 @@ static void print_sem(int semid)
 }
 
 int ipcs_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int ipcs_main(int argc, char **argv)
+int ipcs_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int id = 0;
 	unsigned flags = 0;
diff --git a/util-linux/mdev.c b/util-linux/mdev.c
index 9c33feb35..0edaf1047 100644
--- a/util-linux/mdev.c
+++ b/util-linux/mdev.c
@@ -244,8 +244,10 @@ static void make_device(char *path, int delete)
 }
 
 /* File callback for /sys/ traversal */
-static int fileAction(const char *fileName, struct stat *statbuf,
-                      void *userData, int depth)
+static int fileAction(const char *fileName,
+                      struct stat *statbuf ATTRIBUTE_UNUSED,
+                      void *userData,
+                      int depth ATTRIBUTE_UNUSED)
 {
 	size_t len = strlen(fileName) - 4;
 	char *scratch = userData;
@@ -261,8 +263,10 @@ static int fileAction(const char *fileName, struct stat *statbuf,
 }
 
 /* Directory callback for /sys/ traversal */
-static int dirAction(const char *fileName, struct stat *statbuf,
-                      void *userData, int depth)
+static int dirAction(const char *fileName ATTRIBUTE_UNUSED,
+                      struct stat *statbuf ATTRIBUTE_UNUSED,
+                      void *userData ATTRIBUTE_UNUSED,
+                      int depth)
 {
 	return (depth >= MAX_SYSFS_DEPTH ? SKIP : TRUE);
 }
diff --git a/util-linux/mkfs_minix.c b/util-linux/mkfs_minix.c
index a784b72f4..3fbdc2020 100644
--- a/util-linux/mkfs_minix.c
+++ b/util-linux/mkfs_minix.c
@@ -495,7 +495,7 @@ static size_t do_check(char *buffer, size_t try, unsigned current_block)
 	return try;
 }
 
-static void alarm_intr(int alnum)
+static void alarm_intr(int alnum ATTRIBUTE_UNUSED)
 {
 	if (G.currently_testing >= SB_ZONES)
 		return;
@@ -621,7 +621,7 @@ static void setup_tables(void)
 }
 
 int mkfs_minix_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int mkfs_minix_main(int argc, char **argv)
+int mkfs_minix_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	struct mntent *mp;
 	unsigned opt;
diff --git a/util-linux/more.c b/util-linux/more.c
index 2d5535991..257f40168 100644
--- a/util-linux/more.c
+++ b/util-linux/more.c
@@ -36,7 +36,7 @@ struct globals {
 #define setTermSettings(fd, argp) tcsetattr(fd, TCSANOW, argp)
 #define getTermSettings(fd, argp) tcgetattr(fd, argp)
 
-static void gotsig(int sig)
+static void gotsig(int sig ATTRIBUTE_UNUSED)
 {
 	bb_putchar('\n');
 	setTermSettings(cin_fileno, &initial_settings);
@@ -51,7 +51,7 @@ static void gotsig(int sig)
 #define CONVERTED_TAB_SIZE 8
 
 int more_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int more_main(int argc, char **argv)
+int more_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int c = c; /* for gcc */
 	int lines;
diff --git a/util-linux/mount.c b/util-linux/mount.c
index 796e1e103..6e63a01fc 100644
--- a/util-linux/mount.c
+++ b/util-linux/mount.c
@@ -909,7 +909,7 @@ static inline int daemonize(void) { return -ENOSYS; }
 #endif
 
 // TODO
-static inline int we_saw_this_host_before(const char *hostname)
+static inline int we_saw_this_host_before(const char *hostname ATTRIBUTE_UNUSED)
 {
 	return 0;
 }
diff --git a/util-linux/rdate.c b/util-linux/rdate.c
index 150efbec4..9e7bdba35 100644
--- a/util-linux/rdate.c
+++ b/util-linux/rdate.c
@@ -12,7 +12,7 @@
 
 enum { RFC_868_BIAS = 2208988800UL };
 
-static void socket_timeout(int sig)
+static void socket_timeout(int sig ATTRIBUTE_UNUSED)
 {
 	bb_error_msg_and_die("timeout connecting to time server");
 }
@@ -43,7 +43,7 @@ static time_t askremotedate(const char *host)
 }
 
 int rdate_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int rdate_main(int argc, char **argv)
+int rdate_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	time_t remote_time;
 	unsigned long flags;
diff --git a/util-linux/readprofile.c b/util-linux/readprofile.c
index c6152558c..ef7865951 100644
--- a/util-linux/readprofile.c
+++ b/util-linux/readprofile.c
@@ -42,7 +42,7 @@ static const char defaultmap[] ALIGN1 = "/boot/System.map";
 static const char defaultpro[] ALIGN1 = "/proc/profile";
 
 int readprofile_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int readprofile_main(int argc, char **argv)
+int readprofile_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	FILE *map;
 	const char *mapFile, *proFile, *mult = 0;
diff --git a/util-linux/rtcwake.c b/util-linux/rtcwake.c
index 2b1ab1fca..6df7334fe 100644
--- a/util-linux/rtcwake.c
+++ b/util-linux/rtcwake.c
@@ -107,7 +107,7 @@ static void suspend_system(const char *suspend)
 #define RTCWAKE_OPT_TIME         0x40
 
 int rtcwake_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int rtcwake_main(int argc, char **argv)
+int rtcwake_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	unsigned opt;
 	const char *rtcname = NULL;
diff --git a/util-linux/script.c b/util-linux/script.c
index a4aaa422f..c37fd9d61 100644
--- a/util-linux/script.c
+++ b/util-linux/script.c
@@ -15,13 +15,13 @@
 
 static smallint fd_count = 2;
 
-static void handle_sigchld(int sig)
+static void handle_sigchld(int sig ATTRIBUTE_UNUSED)
 {
 	fd_count = 0;
 }
 
-int script_main(int argc, char *argv[]) MAIN_EXTERNALLY_VISIBLE;
-int script_main(int argc, char *argv[])
+int script_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
+int script_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int opt;
 	int mode;
diff --git a/util-linux/switch_root.c b/util-linux/switch_root.c
index 3a1741179..c030b99e1 100644
--- a/util-linux/switch_root.c
+++ b/util-linux/switch_root.c
@@ -65,7 +65,7 @@ static void delete_contents(const char *directory)
 }
 
 int switch_root_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int switch_root_main(int argc, char **argv)
+int switch_root_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	char *newroot, *console = NULL;
 	struct stat st1, st2;
diff --git a/util-linux/umount.c b/util-linux/umount.c
index 3f7c0abbd..6136fa97c 100644
--- a/util-linux/umount.c
+++ b/util-linux/umount.c
@@ -27,7 +27,7 @@
 //#define MNT_DETACH 0x00000002 /* Just detach from the tree */
 
 int umount_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
-int umount_main(int argc, char **argv)
+int umount_main(int argc ATTRIBUTE_UNUSED, char **argv)
 {
 	int doForce;
 	char *const path = xmalloc(PATH_MAX + 2); /* to save stack */
author	Denis Vlasenko <vda.linux@googlemail.com>	2008-03-17 09:00:54 +0000
committer	Denis Vlasenko <vda.linux@googlemail.com>	2008-03-17 09:00:54 +0000
commit	68404f13d4bf4826e3609703dad5375763db28ab (patch)
tree	b89ed41daeb3a761ac9416a6eed090023b23e7e2
parent	a55bd05f3cea6c7cbfb45d15009cb70570c2a43b (diff)
download	busybox-68404f13d4bf4826e3609703dad5375763db28ab.tar.gz