diff --git a/archival/gzip.c b/archival/gzip.c
index 3358469..1e56c9d 100644
--- a/archival/gzip.c
+++ b/archival/gzip.c
@@ -2078,7 +2078,7 @@
 	//if (opt & 0x4) // -v
 	argv += optind;
 
-	SET_PTR_TO_GLOBALS(xzalloc(sizeof(struct globals) + sizeof(struct globals2))
+	SET_PTR_TO_GLOBALS((char *)xzalloc(sizeof(struct globals)+sizeof(struct globals2))
 			+ sizeof(struct globals));
 	barrier();
 
diff --git a/editors/awk.c b/editors/awk.c
index cef7334..30f09cb 100644
--- a/editors/awk.c
+++ b/editors/awk.c
@@ -486,7 +486,7 @@
 #define fsplitter    (G.fsplitter   )
 #define rsplitter    (G.rsplitter   )
 #define INIT_G() do { \
-	SET_PTR_TO_GLOBALS(xzalloc(sizeof(G1) + sizeof(G)) + sizeof(G1)); \
+	SET_PTR_TO_GLOBALS((char*)xzalloc(sizeof(G1)+sizeof(G)) + sizeof(G1)); \
 	G.next_token__ltclass = TC_OPTERM; \
 	G.evaluate__seed = 1; \
 } while (0)
diff --git a/editors/sed.c b/editors/sed.c
index 8b4f60a..b749419 100644
--- a/editors/sed.c
+++ b/editors/sed.c
@@ -1186,7 +1186,7 @@
 		case 'x': /* Exchange hold and pattern space */
 		{
 			char *tmp = pattern_space;
-			pattern_space = G.hold_space ? : xzalloc(1);
+			pattern_space = G.hold_space ? G.hold_space : xzalloc(1);
 			last_gets_char = '\n';
 			G.hold_space = tmp;
 			break;
diff --git a/include/libbb.h b/include/libbb.h
index c795e6a..9f7c260 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -1479,7 +1479,7 @@
 /* At least gcc 3.4.6 on mipsel system needs optimization barrier */
 #define barrier() __asm__ __volatile__("":::"memory")
 #define SET_PTR_TO_GLOBALS(x) do { \
-	(*(struct globals**)&ptr_to_globals) = (x); \
+	(*(struct globals**)&ptr_to_globals) = (void*)(x); \
 	barrier(); \
 } while (0)
 
diff --git a/init/init.c b/init/init.c
index 35f64cf..6bee8f3 100644
--- a/init/init.c
+++ b/init/init.c
@@ -862,7 +862,7 @@
 		struct sysinfo info;
 
 		if (sysinfo(&info) == 0
-		 && (info.mem_unit ? : 1) * (long long)info.totalram < 1024*1024
+		 && (info.mem_unit ? info.mem_unit : 1) * (long long)info.totalram < 1024*1024
 		) {
 			message(L_CONSOLE, "Low memory, forcing swapon");
 			/* swapon -a requires /proc typically */
diff --git a/libbb/lineedit.c b/libbb/lineedit.c
index 9a773b4..38c69c6 100644
--- a/libbb/lineedit.c
+++ b/libbb/lineedit.c
@@ -2037,7 +2037,8 @@
  rewrite_line:
 			/* Rewrite the line with the selected history item */
 			/* change command */
-			command_len = load_string(state->history[state->cur_history] ? : "", maxsize);
+			command_len = load_string(state->history[state->cur_history] ?
+					state->history[state->cur_history] : "", maxsize);
 			/* redraw and go to eol (bol, in vi) */
 			redraw(cmdedit_y, (state->flags & VI_MODE) ? 9999 : 0);
 			break;
diff --git a/libbb/loop.c b/libbb/loop.c
index 24dab1a..3fec7ad 100644
--- a/libbb/loop.c
+++ b/libbb/loop.c
@@ -105,7 +105,7 @@
 	}
 
 	/* Find a loop device.  */
-	try = *device ? : dev;
+	try = *device ? *device : dev;
 	for (i = 0; rc; i++) {
 		sprintf(dev, LOOP_FORMAT, i);
 
diff --git a/mailutils/mime.c b/mailutils/mime.c
index b856c81..dd81139 100644
--- a/mailutils/mime.c
+++ b/mailutils/mime.c
@@ -177,7 +177,8 @@
 static const char *find_token(const char *const string_array[], const char *key, const char *defvalue)
 {
 	const char *r = NULL;
-	for (int i = 0; string_array[i] != 0; i++) {
+	int i;
+	for (i = 0; string_array[i] != NULL; i++) {
 		if (strcasecmp(string_array[i], key) == 0) {
 			r = (char *)string_array[i+1];
 			break;
diff --git a/miscutils/less.c b/miscutils/less.c
index bd85506..ce77ddd 100644
--- a/miscutils/less.c
+++ b/miscutils/less.c
@@ -624,7 +624,7 @@
 
 	while (match_status == 0) {
 		char *new = xasprintf("%s%.*s"HIGHLIGHT"%.*s"NORMAL,
-				growline ? : "",
+				growline ? growline : "",
 				match_structs.rm_so, str,
 				match_structs.rm_eo - match_structs.rm_so,
 						str + match_structs.rm_so);
diff --git a/modutils/modprobe-small.c b/modutils/modprobe-small.c
index 0d78033..bbd700e 100644
--- a/modutils/modprobe-small.c
+++ b/modutils/modprobe-small.c
@@ -314,6 +314,7 @@
 
 	while ((line = xmalloc_fgetline(fp)) != NULL) {
 		char* space;
+		char* linebuf;
 		int cur;
 
 		if (!line[0]) {
@@ -328,7 +329,8 @@
 		if (*space)
 			*space++ = '\0';
 		modinfo[cur].aliases = space;
-		modinfo[cur].deps = xmalloc_fgetline(fp) ? : xzalloc(1);
+		linebuf = xmalloc_fgetline(fp);
+		modinfo[cur].deps = linebuf ? linebuf : xzalloc(1);
 		if (modinfo[cur].deps[0]) {
 			/* deps are not "", so next line must be empty */
 			line = xmalloc_fgetline(fp);
diff --git a/runit/svlogd.c b/runit/svlogd.c
index 25c169a..66a13fb 100644
--- a/runit/svlogd.c
+++ b/runit/svlogd.c
@@ -670,7 +670,7 @@
 				memRchr = memchr;
 				/* Add '\n'-terminated line to ld->inst */
 				while (1) {
-					int l = asprintf(&new, "%s%s\n", ld->inst ? : "", s);
+					int l = asprintf(&new, "%s%s\n", ld->inst ? ld->inst : "", s);
 					if (l >= 0 && new)
 						break;
 					pause_nomem();
diff --git a/selinux/setfiles.c b/selinux/setfiles.c
index b410d7e..aabc371 100644
--- a/selinux/setfiles.c
+++ b/selinux/setfiles.c
@@ -347,7 +347,7 @@
 		 * same.  For "-vv", emit everything. */
 		if (verbose > 1 || !user_only_changed) {
 			bb_info_msg("%s: reset %s context %s->%s",
-				applet_name, my_file, context ?: "", newcon);
+				applet_name, my_file, context ? context : "", newcon);
 		}
 	}
 
diff --git a/shell/bbsh.c b/shell/bbsh.c
index 897c022..ad875ab 100644
--- a/shell/bbsh.c
+++ b/shell/bbsh.c
@@ -212,7 +212,7 @@
 		unsigned cmdlen=0;
 		for (;;) {
 			if (!f) putchar('$');
-			if (1 > getline(&command, &cmdlen,f ? : stdin)) break;
+			if (1 > getline(&command, &cmdlen, f ? f : stdin)) break;
 
 			handle(command);
 		}
diff --git a/shell/hush.c b/shell/hush.c
index 5794b1d..30eddad 100644
--- a/shell/hush.c
+++ b/shell/hush.c
@@ -5794,7 +5794,7 @@
 	 * found.  When recursing, quote state is passed in via dest->o_escape.
 	 */
 	debug_printf_parse("parse_stream entered, end_trigger='%c'\n",
-			end_trigger ? : 'X');
+			end_trigger ? end_trigger : 'X');
 	debug_enter();
 
 	G.ifs = get_local_var_value("IFS");
@@ -6860,7 +6860,8 @@
 		 * bash says "bash: cd: HOME not set" and does nothing
 		 * (exitcode 1)
 		 */
-		newdir = get_local_var_value("HOME") ? : "/";
+		const char *home = get_local_var_value("HOME");
+		newdir = home ? home : "/";
 	}
 	if (chdir(newdir)) {
 		/* Mimic bash message exactly */
diff --git a/util-linux/fbset.c b/util-linux/fbset.c
index affeab0..358d0a8 100644
--- a/util-linux/fbset.c
+++ b/util-linux/fbset.c
@@ -254,7 +254,7 @@
 }
 #endif
 
-static void setmode(struct fb_var_screeninfo *base,
+static void setfbmode(struct fb_var_screeninfo *base,
 					struct fb_var_screeninfo *set)
 {
 	if ((int32_t) set->xres > 0)
@@ -402,7 +402,7 @@
 	}
 
 	if (options & OPT_CHANGE) {
-		setmode(&var, &varset);
+		setfbmode(&var, &varset);
 		if (options & OPT_ALL)
 			var.activate = FB_ACTIVATE_ALL;
 		xioctl(fh, FBIOPUT_VSCREENINFO, &var);