diff --git a/coreutils/id.c b/coreutils/id.c
index a75c226..6ddb236 100644
--- a/coreutils/id.c
+++ b/coreutils/id.c
@@ -17,6 +17,14 @@
 
 #include "libbb.h"
 
+#if !ENABLE_USE_BB_PWD_GRP
+#if defined(__UCLIBC_MAJOR__) && (__UCLIBC_MAJOR__ == 0)
+#if (__UCLIBC_MINOR__ < 9) || (__UCLIBC_MINOR__ == 9 &&  __UCLIBC_SUBLEVEL__ < 30)
+#error "Sorry, you need at least uClibc version 0.9.30 for id applet to build"
+#endif
+#endif
+#endif
+
 enum {
 	PRINT_REAL      = (1 << 0),
 	NAME_NOT_NUMBER = (1 << 1),
diff --git a/init/init.c b/init/init.c
index ef38781..1caf45b 100644
--- a/init/init.c
+++ b/init/init.c
@@ -209,8 +209,9 @@
 		/* Make sure fd 0,1,2 are not closed
 		 * (so that they won't be used by future opens) */
 		bb_sanitize_stdio();
-		/* Make sure init can't be blocked by writing to stderr */
-		fcntl(STDERR_FILENO, F_SETFL, fcntl(STDERR_FILENO, F_GETFL) | O_NONBLOCK);
+// Users report problems
+//		/* Make sure init can't be blocked by writing to stderr */
+//		fcntl(STDERR_FILENO, F_SETFL, fcntl(STDERR_FILENO, F_GETFL) | O_NONBLOCK);
 	}
 
 	s = getenv("TERM");
diff --git a/libbb/getopt32.c b/libbb/getopt32.c
index 49fb533..17babcd 100644
--- a/libbb/getopt32.c
+++ b/libbb/getopt32.c
@@ -515,6 +515,19 @@
 		}
 	}
 
+	/* In case getopt32 was already called:
+	 * reset the libc getopt() function, which keeps internal state.
+	 * run_nofork_applet_prime() does this, but we might end up here
+	 * also via gunzip_main() -> gzip_main(). Play safe.
+	 */
+#ifdef __GLIBC__
+	optind = 0;
+#else /* BSD style */
+	optind = 1;
+	/* optreset = 1; */
+#endif
+	/* optarg = NULL; opterr = 0; optopt = 0; - do we need this?? */
+
 	pargv = NULL;
 
 	/* Note: just "getopt() <= 0" will not work well for
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 3953cc9..0be3255 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -1415,8 +1415,10 @@
 	if ((state->flags & SAVE_HISTORY) && state->hist_file)
 		load_history(state->hist_file);
 #endif
+#if MAX_HISTORY > 0
 	if (state->flags & DO_HISTORY)
 		state->cur_history = state->cnt_history;
+#endif
 
 	/* prepare before init handlers */
 	cmdedit_y = 0;  /* quasireal y, not true if line > xt*yt */
diff --git a/miscutils/inotifyd.c b/miscutils/inotifyd.c
index 5ac4738..0c4b067 100644
--- a/miscutils/inotifyd.c
+++ b/miscutils/inotifyd.c
@@ -51,6 +51,7 @@
 int inotifyd_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int inotifyd_main(int argc UNUSED_PARAM, char **argv)
 {
+	int n;
 	unsigned mask = IN_ALL_EVENTS; // assume we want all events
 	struct pollfd pfd;
 	char **watched = ++argv; // watched name list
@@ -69,7 +70,6 @@
 	while (*++argv) {
 		char *path = *argv;
 		char *masks = strchr(path, ':');
-		int wd; // watch descriptor
 		// if mask is specified ->
 		if (masks) {
 			*masks = '\0'; // split path and mask
@@ -83,32 +83,39 @@
 			}
 		}
 		// add watch
-		wd = inotify_add_watch(pfd.fd, path, mask);
-		if (wd < 0) {
+		n = inotify_add_watch(pfd.fd, path, mask);
+		if (n < 0)
 			bb_perror_msg_and_die("add watch (%s) failed", path);
-//		} else {
-//			bb_error_msg("added %d [%s]:%4X", wd, path, mask);
-		}
+		//bb_error_msg("added %d [%s]:%4X", n, path, mask);
 	}
 
 	// setup signals
-	bb_signals(0
-		+ (1 << SIGHUP)
-		+ (1 << SIGINT)
-		+ (1 << SIGTERM)
-		+ (1 << SIGPIPE)
-		, record_signo);
+	bb_signals(BB_FATAL_SIGS, record_signo);
 
 	// do watch
-
-//	pfd.fd = fd;
 	pfd.events = POLLIN;
-
-	while (!bb_got_signal && poll(&pfd, 1, -1) > 0) {
+	while (1) {
 		ssize_t len;
 		void *buf;
 		struct inotify_event *ie;
 
+ again:
+		if (bb_got_signal)
+			break;
+		n = poll(&pfd, 1, -1);
+		/* Signal interrupted us? */
+		if (n < 0 && errno == EINTR)
+			goto again;
+		// Under Linux, above if() is not necessary.
+		// Non-fatal signals, e.g. SIGCHLD, when set to SIG_DFL,
+		// are not interrupting poll().
+		// Thus we can just break if n <= 0 (see below),
+		// because EINTR will happen only on SIGTERM et al.
+		// But this might be not true under other Unixes,
+		// and is generally way too subtle to depend on.
+		if (n <= 0) // strange error?
+			break;
+
 		// read out all pending events
 		xioctl(pfd.fd, FIONREAD, &len);
 #define eventbuf bb_common_bufsiz1
@@ -117,21 +124,21 @@
 		// process events. N.B. events may vary in length
 		while (len > 0) {
 			int i;
-			char events[12];
+			char events[sizeof(mask_names)];
 			char *s = events;
 			unsigned m = ie->mask;
 
-			for (i = 0; i < 12; ++i, m >>= 1) {
-				if (m & 1) {
+			for (i = 0; i < sizeof(mask_names)-1; ++i, m >>= 1) {
+				if (m & 1)
 					*s++ = mask_names[i];
-				}
 			}
 			*s = '\0';
-//			bb_error_msg("exec %s %08X\t%s\t%s\t%s", agent, ie->mask, events, watched[ie->wd], ie->len ? ie->name : "");
+			//bb_error_msg("exec %s %08X\t%s\t%s\t%s", agent,
+			// ie->mask, events, watched[ie->wd], ie->len ? ie->name : "");
 			args[1] = events;
 			args[2] = watched[ie->wd];
 			args[3] = ie->len ? ie->name : NULL;
-			xspawn((char **)args);
+			wait4pid(xspawn((char **)args));
 			// next event
 			i = sizeof(struct inotify_event) + ie->len;
 			len -= i;
diff --git a/modutils/modprobe-small.c b/modutils/modprobe-small.c
index 96a0a08..d3fde0e 100644
--- a/modutils/modprobe-small.c
+++ b/modutils/modprobe-small.c
@@ -600,18 +600,22 @@
 	free(deps);
 
 	/* modprobe -> load it */
-	if (!is_rmmod && (options && !strstr(options, "blacklist"))) {
-		errno = 0;
-		if (load_module(info->pathname, options) != 0) {
-			if (EEXIST != errno) {
-				bb_error_msg("'%s': %s",
+	if (!is_rmmod) {
+		if (!options || strstr(options, "blacklist") == NULL) {
+			errno = 0;
+			if (load_module(info->pathname, options) != 0) {
+				if (EEXIST != errno) {
+					bb_error_msg("'%s': %s",
 						info->pathname,
 						moderror(errno));
-			} else {
-				dbg1_error_msg("'%s': %s",
+				} else {
+					dbg1_error_msg("'%s': %s",
 						info->pathname,
 						moderror(errno));
+				}
 			}
+		} else {
+			dbg1_error_msg("'%s': blacklisted", info->pathname);
 		}
 	}
  ret:
diff --git a/modutils/modutils-24.c b/modutils/modutils-24.c
index 2bc4bda..c6e7226 100644
--- a/modutils/modutils-24.c
+++ b/modutils/modutils-24.c
@@ -3236,8 +3236,10 @@
 	}
 
 	shnum = f->header.e_shnum;
-	f->sections = xmalloc(sizeof(struct obj_section *) * shnum);
-	memset(f->sections, 0, sizeof(struct obj_section *) * shnum);
+	/* Growth of ->sections vector will be done by
+	 * xrealloc_vector(..., 2, ...), therefore we must allocate
+	 * at least 2^2 = 4 extra elements here. */
+	f->sections = xzalloc(sizeof(f->sections[0]) * (shnum + 4));
 
 	section_headers = alloca(sizeof(ElfW(Shdr)) * shnum);
 	fseek(fp, f->header.e_shoff, SEEK_SET);
diff --git a/shell/ash.c b/shell/ash.c
index 92aa5ec..d6fd388 100644
--- a/shell/ash.c
+++ b/shell/ash.c
@@ -536,6 +536,7 @@
 #define NHERE    24
 #define NXHERE   25
 #define NNOT     26
+#define N_NUMBER 27
 
 union node;
 
@@ -7546,43 +7547,46 @@
 
 /* ============ eval.c */
 
-static int funcblocksize;          /* size of structures in function */
-static int funcstringsize;         /* size of strings in node */
-static void *funcblock;            /* block to allocate function from */
-static char *funcstring;           /* block to allocate strings from */
+static int funcblocksize;       /* size of structures in function */
+static int funcstringsize;      /* size of strings in node */
+static void *funcblock;         /* block to allocate function from */
+static char *funcstring;        /* block to allocate strings from */
 
 /* flags in argument to evaltree */
-#define EV_EXIT 01              /* exit after evaluating tree */
-#define EV_TESTED 02            /* exit status is checked; ignore -e flag */
+#define EV_EXIT    01           /* exit after evaluating tree */
+#define EV_TESTED  02           /* exit status is checked; ignore -e flag */
 #define EV_BACKCMD 04           /* command executing within back quotes */
 
-static const short nodesize[26] = {
-	SHELL_ALIGN(sizeof(struct ncmd)),
-	SHELL_ALIGN(sizeof(struct npipe)),
-	SHELL_ALIGN(sizeof(struct nredir)),
-	SHELL_ALIGN(sizeof(struct nredir)),
-	SHELL_ALIGN(sizeof(struct nredir)),
-	SHELL_ALIGN(sizeof(struct nbinary)),
-	SHELL_ALIGN(sizeof(struct nbinary)),
-	SHELL_ALIGN(sizeof(struct nbinary)),
-	SHELL_ALIGN(sizeof(struct nif)),
-	SHELL_ALIGN(sizeof(struct nbinary)),
-	SHELL_ALIGN(sizeof(struct nbinary)),
-	SHELL_ALIGN(sizeof(struct nfor)),
-	SHELL_ALIGN(sizeof(struct ncase)),
-	SHELL_ALIGN(sizeof(struct nclist)),
-	SHELL_ALIGN(sizeof(struct narg)),
-	SHELL_ALIGN(sizeof(struct narg)),
-	SHELL_ALIGN(sizeof(struct nfile)),
-	SHELL_ALIGN(sizeof(struct nfile)),
-	SHELL_ALIGN(sizeof(struct nfile)),
-	SHELL_ALIGN(sizeof(struct nfile)),
-	SHELL_ALIGN(sizeof(struct nfile)),
-	SHELL_ALIGN(sizeof(struct ndup)),
-	SHELL_ALIGN(sizeof(struct ndup)),
-	SHELL_ALIGN(sizeof(struct nhere)),
-	SHELL_ALIGN(sizeof(struct nhere)),
-	SHELL_ALIGN(sizeof(struct nnot)),
+static const short nodesize[N_NUMBER] = {
+	[NCMD     ] = SHELL_ALIGN(sizeof(struct ncmd)),
+	[NPIPE    ] = SHELL_ALIGN(sizeof(struct npipe)),
+	[NREDIR   ] = SHELL_ALIGN(sizeof(struct nredir)),
+	[NBACKGND ] = SHELL_ALIGN(sizeof(struct nredir)),
+	[NSUBSHELL] = SHELL_ALIGN(sizeof(struct nredir)),
+	[NAND     ] = SHELL_ALIGN(sizeof(struct nbinary)),
+	[NOR      ] = SHELL_ALIGN(sizeof(struct nbinary)),
+	[NSEMI    ] = SHELL_ALIGN(sizeof(struct nbinary)),
+	[NIF      ] = SHELL_ALIGN(sizeof(struct nif)),
+	[NWHILE   ] = SHELL_ALIGN(sizeof(struct nbinary)),
+	[NUNTIL   ] = SHELL_ALIGN(sizeof(struct nbinary)),
+	[NFOR     ] = SHELL_ALIGN(sizeof(struct nfor)),
+	[NCASE    ] = SHELL_ALIGN(sizeof(struct ncase)),
+	[NCLIST   ] = SHELL_ALIGN(sizeof(struct nclist)),
+	[NDEFUN   ] = SHELL_ALIGN(sizeof(struct narg)),
+	[NARG     ] = SHELL_ALIGN(sizeof(struct narg)),
+	[NTO      ] = SHELL_ALIGN(sizeof(struct nfile)),
+#if ENABLE_ASH_BASH_COMPAT
+	[NTO2     ] = SHELL_ALIGN(sizeof(struct nfile)),
+#endif
+	[NCLOBBER ] = SHELL_ALIGN(sizeof(struct nfile)),
+	[NFROM    ] = SHELL_ALIGN(sizeof(struct nfile)),
+	[NFROMTO  ] = SHELL_ALIGN(sizeof(struct nfile)),
+	[NAPPEND  ] = SHELL_ALIGN(sizeof(struct nfile)),
+	[NTOFD    ] = SHELL_ALIGN(sizeof(struct ndup)),
+	[NFROMFD  ] = SHELL_ALIGN(sizeof(struct ndup)),
+	[NHERE    ] = SHELL_ALIGN(sizeof(struct nhere)),
+	[NXHERE   ] = SHELL_ALIGN(sizeof(struct nhere)),
+	[NNOT     ] = SHELL_ALIGN(sizeof(struct nnot)),
 };
 
 static void calcsize(union node *n);
@@ -9065,8 +9069,6 @@
  * This implements the input routines used by the parser.
  */
 
-#define EOF_NLEFT -99           /* value of parsenleft when EOF pushed back */
-
 enum {
 	INPUT_PUSH_FILE = 1,
 	INPUT_NOFILE_OK = 2,
@@ -9107,7 +9109,6 @@
 #endif
 	parsenextc = sp->prevstring;
 	parsenleft = sp->prevnleft;
-/*dprintf("*** calling popstring: restoring to '%s'\n", parsenextc);*/
 	g_parsefile->strpush = sp->prev;
 	if (sp != &(g_parsefile->basestrpush))
 		free(sp);
@@ -9123,7 +9124,7 @@
 
 #if ENABLE_FEATURE_EDITING
  retry:
-	if (!iflag || g_parsefile->fd)
+	if (!iflag || g_parsefile->fd != STDIN_FILENO)
 		nr = nonblock_safe_read(g_parsefile->fd, buf, BUFSIZ - 1);
 	else {
 #if ENABLE_FEATURE_TAB_COMPLETION
@@ -9171,55 +9172,76 @@
  * Refill the input buffer and return the next input character:
  *
  * 1) If a string was pushed back on the input, pop it;
- * 2) If an EOF was pushed back (parsenleft == EOF_NLEFT) or we are reading
+ * 2) If an EOF was pushed back (parsenleft < -BIGNUM) or we are reading
  *    from a string so we can't refill the buffer, return EOF.
  * 3) If the is more stuff in this buffer, use it else call read to fill it.
  * 4) Process input up to the next newline, deleting nul characters.
  */
+//#define pgetc_debug(...) bb_error_msg(__VA_ARGS__)
+#define pgetc_debug(...) ((void)0)
 static int
 preadbuffer(void)
 {
 	char *q;
 	int more;
-	char savec;
 
 	while (g_parsefile->strpush) {
 #if ENABLE_ASH_ALIAS
-		if (parsenleft == -1 && g_parsefile->strpush->ap &&
-			parsenextc[-1] != ' ' && parsenextc[-1] != '\t') {
+		if (parsenleft == -1 && g_parsefile->strpush->ap
+		 && parsenextc[-1] != ' ' && parsenextc[-1] != '\t'
+		) {
+			pgetc_debug("preadbuffer PEOA");
 			return PEOA;
 		}
 #endif
 		popstring();
+		/* try "pgetc" now: */
+		pgetc_debug("internal pgetc at %d:%p'%s'", parsenleft, parsenextc, parsenextc);
 		if (--parsenleft >= 0)
 			return signed_char2int(*parsenextc++);
 	}
-	if (parsenleft == EOF_NLEFT || g_parsefile->buf == NULL)
+	/* on both branches above parsenleft < 0.
+	 * "pgetc" needs refilling.
+	 */
+
+	/* -90 is -BIGNUM. Below we use -99 to mark "EOF on read",
+	 * pungetc() may decrement it a few times. -90 is enough.
+	 */
+	if (parsenleft < -90 || g_parsefile->buf == NULL) {
+		pgetc_debug("preadbuffer PEOF1");
+		/* even in failure keep them in lock step,
+		 * for correct pungetc. */
+		parsenextc++;
 		return PEOF;
-	flush_stdout_stderr();
+	}
 
 	more = parselleft;
 	if (more <= 0) {
+		flush_stdout_stderr();
  again:
 		more = preadfd();
 		if (more <= 0) {
-			parselleft = parsenleft = EOF_NLEFT;
+			parselleft = parsenleft = -99;
+			pgetc_debug("preadbuffer PEOF2");
+			parsenextc++;
 			return PEOF;
 		}
 	}
 
+	/* Find out where's the end of line.
+	 * Set parsenleft/parselleft acordingly.
+	 * NUL chars are deleted.
+	 */
 	q = parsenextc;
-
-	/* delete nul characters */
 	for (;;) {
-		int c;
+		char c;
 
 		more--;
-		c = *q;
 
-		if (!c)
+		c = *q;
+		if (c == '\0') {
 			memmove(q, q + 1, more);
-		else {
+		} else {
 			q++;
 			if (c == '\n') {
 				parsenleft = q - parsenextc - 1;
@@ -9236,22 +9258,23 @@
 	}
 	parselleft = more;
 
-	savec = *q;
-	*q = '\0';
-
 	if (vflag) {
+		char save = *q;
+		*q = '\0';
 		out2str(parsenextc);
+		*q = save;
 	}
 
-	*q = savec;
-
+	pgetc_debug("preadbuffer at %d:%p'%s'", parsenleft, parsenextc, parsenextc);
 	return signed_char2int(*parsenextc++);
 }
 
 #define pgetc_as_macro() (--parsenleft >= 0 ? signed_char2int(*parsenextc++) : preadbuffer())
+
 static int
 pgetc(void)
 {
+	pgetc_debug("pgetc at %d:%p'%s'", parsenleft, parsenextc, parsenextc);
 	return pgetc_as_macro();
 }
 
@@ -9312,6 +9335,7 @@
 {
 	parsenleft++;
 	parsenextc--;
+	pgetc_debug("pushed back to %d:%p'%s'", parsenleft, parsenextc, parsenextc);
 }
 
 /*
@@ -9325,16 +9349,17 @@
 pushstring(char *s, struct alias *ap)
 {
 	struct strpush *sp;
-	size_t len;
+	int len;
 
 	len = strlen(s);
 	INT_OFF;
 	if (g_parsefile->strpush) {
-		sp = ckzalloc(sizeof(struct strpush));
+		sp = ckzalloc(sizeof(*sp));
 		sp->prev = g_parsefile->strpush;
-		g_parsefile->strpush = sp;
-	} else
-		sp = g_parsefile->strpush = &(g_parsefile->basestrpush);
+	} else {
+		sp = &(g_parsefile->basestrpush);
+	}
+	g_parsefile->strpush = sp;
 	sp->prevstring = parsenextc;
 	sp->prevnleft = parsenleft;
 #if ENABLE_ASH_ALIAS
@@ -9424,7 +9449,7 @@
 	close_on_exec_on(fd);
 	if (push) {
 		pushfile();
-		g_parsefile->buf = 0;
+		g_parsefile->buf = NULL;
 	}
 	g_parsefile->fd = fd;
 	if (g_parsefile->buf == NULL)
diff --git a/sysklogd/klogd.c b/sysklogd/klogd.c
index 723ca80..a27ddf4 100644
--- a/sysklogd/klogd.c
+++ b/sysklogd/klogd.c
@@ -73,9 +73,6 @@
 
 	syslog(LOG_NOTICE, "klogd started: %s", bb_banner);
 
-	/* Initially null terminate the buffer in case of a very long line */
-	log_buffer[KLOGD_LOGBUF_SIZE - 1] = '\0';
-
 	while (1) {
 		int n;
 		int priority;
@@ -89,6 +86,7 @@
 					errno);
 			break;
 		}
+		log_buffer[used + n] = '\0';
 
 		/* klogctl buffer parsing modelled after code in dmesg.c */
 		start = &log_buffer[0];
@@ -101,7 +99,7 @@
 				/* This line is incomplete... */
 				if (start != log_buffer) {
 					/* move it to the front of the buffer */
-					strcpy(log_buffer, start);
+					overlapping_strcpy(log_buffer, start);
 					/* don't log it yet */
 					used = strlen(log_buffer);
 					break;