diff --git a/libr/anal/sign.c b/libr/anal/sign.c
index 592ae285a9674e..d5549a02c003f4 100644
--- a/libr/anal/sign.c
+++ b/libr/anal/sign.c
@@ -227,8 +227,8 @@ R_API bool r_sign_deserialize(RAnal *a, RSignItem *it, const char *k, const char
 	R_RETURN_VAL_IF_FAIL (a && it && k && v, false);
 
 	bool success = true;
-	char *k2 = R_STR_DUP (k);
-	char *v2 = R_STR_DUP (v);
+	char *k2 = strdup (k);
+	char *v2 = strdup (v);
 	if (!k2 || !v2) {
 		success = false;
 		goto out;
diff --git a/libr/core/canal.c b/libr/core/canal.c
index 3d08e18dea5ecf..30df9f40aa29d4 100644
--- a/libr/core/canal.c
+++ b/libr/core/canal.c
@@ -2442,7 +2442,7 @@ static void add_single_addr_xrefs(RCore *core, ut64 addr, RGraph *graph) {
 	r_return_if_fail (graph);
 	RFlagItem *f = r_flag_get_at (core->flags, addr, false);
 	char *me = (f && f->offset == addr)
-		? R_STR_DUP (f->name)
+		? strdup (f->name)
 		: r_str_newf ("0x%" PFMT64x, addr);
 
 	RGraphNode *curr_node = r_graph_add_node_info (graph, me, NULL, addr);
diff --git a/libr/core/cmd_cmp.inc.c b/libr/core/cmd_cmp.inc.c
index 0ab1afe131d30f..8012f153819f73 100644
--- a/libr/core/cmd_cmp.inc.c
+++ b/libr/core/cmd_cmp.inc.c
@@ -112,7 +112,7 @@ R_API bool r_core_cmpwatch_add(RCore *core, ut64 addr, int size, const char *cmd
 		found = true;
 	}
 	cmpw->size = size;
-	cmpw->cmd = R_STR_DUP (cmd);
+	cmpw->cmd = strdup (cmd);
 	if (!cmpw->cmd) {
 		free (cmpw);
 		return false;
diff --git a/libr/core/cmd_debug.inc.c b/libr/core/cmd_debug.inc.c
index 9fb727559674b0..ff1e3ef43afe95 100644
--- a/libr/core/cmd_debug.inc.c
+++ b/libr/core/cmd_debug.inc.c
@@ -2163,7 +2163,7 @@ R_API void r_core_debug_rr(RCore *core, RReg *reg, int mode) {
 			valuestr = r_str_newf ("%s0x%"PFMT64x"%s", color, value, colorend);
 			r_cons_print (Color_RESET);
 		} else {
-			namestr = R_STR_DUP (r->name);
+			namestr = strdup (r->name);
 			valuestr = r_str_newf ("0x%"PFMT64x, value);
 		}
 		ut64 o_offset = core->offset;
diff --git a/libr/core/cmd_zign.inc.c b/libr/core/cmd_zign.inc.c
index 28c517c89fbaf0..40821bcbdfb2a1 100644
--- a/libr/core/cmd_zign.inc.c
+++ b/libr/core/cmd_zign.inc.c
@@ -1099,7 +1099,7 @@ static bool diff_zig(void *data, const char *input) {
 		return false;
 	}
 
-	char *argv = R_STR_DUP (input);
+	char *argv = strdup (input);
 	if (!argv) {
 		return false;
 	}
diff --git a/libr/core/core.c b/libr/core/core.c
index bec97239b77588..7e69fdf4762522 100644
--- a/libr/core/core.c
+++ b/libr/core/core.c
@@ -1202,14 +1202,14 @@ static void autocomplete_ms_path(RLineCompletion *completion, RCore *core, const
 				dirname = r_file_new (pwd, lpath, NULL);
 			}
 		}
-		basename = R_STR_DUP (p + 1);
+		basename = strdup (p + 1);
 	} else { // xxx
 		if (strlen (pwd) == 1) {
 			dirname = r_str_newf ("%s", R_SYS_DIR);
 		} else {
 			dirname = r_str_newf ("%s%s", pwd, R_SYS_DIR);
 		}
-		basename = R_STR_DUP (lpath);
+		basename = strdup (lpath);
 	}
 	R_FREE (pwd);
 
@@ -1340,7 +1340,7 @@ static void autocomplete_process_path(RLineCompletion *completion, const char *s
 		path++;
 	}
 #endif
-	lpath = R_STR_DUP (path);
+	lpath = strdup (path);
 #if R2__WINDOWS__
 	r_str_replace_ch (lpath, '/', '\\', true);
 #endif
@@ -1351,7 +1351,7 @@ static void autocomplete_process_path(RLineCompletion *completion, const char *s
 #if R2__WINDOWS__
 			dirname = strdup ("\\.\\");
 #else
-			dirname = R_STR_DUP (R_SYS_DIR);
+			dirname = strdup (R_SYS_DIR);
 #endif
 		} else if (lpath[0] == '~' && lpath[1]) { // ~/xxx/yyy
 			dirname = r_file_home (lpath + 2);
@@ -1419,7 +1419,7 @@ static void autocomplete_filename(RLineCompletion *completion, RLineBuffer *buf,
 	char *pipe = strchr (buf->data, '>');
 
 	if (pipe) {
-		args = R_STR_DUP (pipe);
+		args = strdup (pipe);
 #if 0
 		if (pipe[1] == ' ') {
 			// currently unreachable
@@ -1608,7 +1608,7 @@ static void autocomplete_sdb(RCore *core, RLineCompletion *completion, const cha
 	if (pipe) {
 		str = r_str_trim_head_ro (pipe + 1);
 	}
-	lpath = R_STR_DUP (str);
+	lpath = strdup (str);
 	p1 = strchr (lpath, '/');
 	if (p1) {
 		*p1 = 0;
diff --git a/libr/core/disasm.c b/libr/core/disasm.c
index 0e4c2bee4a1d37..6ba554f49392e8 100644
--- a/libr/core/disasm.c
+++ b/libr/core/disasm.c
@@ -4859,7 +4859,7 @@ static void ds_print_ptr(RDisasmState *ds, int len, int idx) {
 		f = r_flag_get_i (core->flags, refaddr);
 		if (f) {
 			if (strlen (msg) != 1) {
-				char *msg2 = R_STR_DUP (msg);
+				char *msg2 = strdup (msg);
 				if (msg2) {
 					r_str_filter (msg2, 0);
 					if (!strncmp (msg2, "UH..", 4)) {
diff --git a/libr/core/fortune.c b/libr/core/fortune.c
index 654a399d5bbc52..a4ee1673e4195e 100644
--- a/libr/core/fortune.c
+++ b/libr/core/fortune.c
@@ -28,7 +28,7 @@ static bool _push_types(RList *type_list, char *fortune_dir) {
 	char *file;
 	r_list_foreach (files, iter, file) {
 		if (r_str_startswith (file, "fortunes.") && file[9]) {
-			r_list_push (type_list, R_STR_DUP (file + 9));
+			r_list_push (type_list, strdup (file + 9));
 		}
 	}
 	r_list_free (files);
diff --git a/libr/core/panels.c b/libr/core/panels.c
index f70f79b705ad93..f11c2ef247d926 100644
--- a/libr/core/panels.c
+++ b/libr/core/panels.c
@@ -514,7 +514,7 @@ static bool __check_panel_type(RPanel *panel, const char *type) {
 	if (!panel || !panel->model->cmd || !type) {
 		return false;
 	}
-	char *tmp = R_STR_DUP (panel->model->cmd);
+	char *tmp = strdup (panel->model->cmd);
 	int n = r_str_split (tmp, ' ');
 	if (!n) {
 		free (tmp);
@@ -623,14 +623,14 @@ static void __set_decompiler_cache(RCore *core, char *s) {
 	RAnalFunction *func = r_anal_get_fcn_in (core->anal, core->offset, R_ANAL_FCN_TYPE_NULL);
 	if (func) {
 		if (core->panels_root->cur_pdc_cache) {
-			sdb_ptr_set (core->panels_root->cur_pdc_cache, r_num_as_string (NULL, func->addr, false), R_STR_DUP (s), 0);
+			sdb_ptr_set (core->panels_root->cur_pdc_cache, r_num_as_string (NULL, func->addr, false), strdup (s), 0);
 		} else {
 			Sdb *sdb = sdb_new0 ();
 			const char *pdc_now = r_config_get (core->config, "cmd.pdc");
 			sdb_ptr_set (sdb, r_num_as_string (NULL, func->addr, false), R_STR_DUP (s), 0);
 			core->panels_root->cur_pdc_cache = sdb;
 			if (!sdb_exists (core->panels_root->pdc_caches, pdc_now)) {
-				sdb_ptr_set (core->panels_root->pdc_caches, R_STR_DUP (pdc_now), sdb, 0);
+				sdb_ptr_set (core->panels_root->pdc_caches, strdup (pdc_now), sdb, 0);
 			}
 		}
 	}
@@ -639,7 +639,7 @@ static void __set_decompiler_cache(RCore *core, char *s) {
 
 static void __set_read_only(RCore *core, RPanel *p, char *s) {
 	free (p->model->readOnly);
-	p->model->readOnly = R_STR_DUP (s);
+	p->model->readOnly = strdup (s);
 	__set_dcb (core, p);
 	__set_pcb (p);
 }
@@ -2294,7 +2294,7 @@ static int __show_all_decompiler_cb(void *user) {
 		r_config_set (core->config, "cmd.pdc", opt);
 		RPanel *panel = __get_panel (panels, i++);
 		panels->n_panels = i;
-		panel->model->title = R_STR_DUP (opt);
+		panel->model->title = strdup (opt);
 		__set_read_only (core, panel, r_core_cmd_str (core, opt));
 	}
 	__layout_equal_hor (panels);
@@ -2317,7 +2317,7 @@ static void __init_modal_db(RCore *core) {
 	SdbList *sdb_list = sdb_foreach_list (core->panels->db, true);
 	ls_foreach (sdb_list, sdb_iter, kv) {
 		const char *key = sdbkv_key (kv);
-		sdb_ptr_set (db, R_STR_DUP (key), &__create_panel_db, 0);
+		sdb_ptr_set (db, strdup (key), &__create_panel_db, 0);
 	}
 	sdb_ptr_set (db, "Search strings in data sections", &__search_strings_data_create, 0);
 	sdb_ptr_set (db, "Search strings in the whole bin", &__search_strings_bin_create, 0);
@@ -2597,7 +2597,7 @@ static void __handle_tab_new_with_cur_panel(RCore *core) {
 	RPanel *new_panel = __get_panel (new_panels, 0);
 	__init_panel_param (core, new_panel, cur->model->title, cur->model->cmd);
 	new_panel->model->cache = cur->model->cache;
-	new_panel->model->funcName = R_STR_DUP (cur->model->funcName);
+	new_panel->model->funcName = strdup (cur->model->funcName);
 	__set_cmd_str_cache (core, new_panel, cur->model->cmdStrCache);
 	__maximize_panel_size (new_panels);
 
diff --git a/libr/main/ravc2.c b/libr/main/ravc2.c
index 49fb4405c47d42..c63e502cd73308 100644
--- a/libr/main/ravc2.c
+++ b/libr/main/ravc2.c
@@ -145,7 +145,7 @@ R_API int r_main_ravc2(int argc, const char **argv) {
 			if (files) {
 				size_t i;
 				for (i = 2; i < argc - 1; i++) {
-					char *file = R_STR_DUP (argv[opt.ind + i]);
+					char *file = strdup (argv[opt.ind + i]);
 					if (!file || !r_list_append (files, file)) {
 						free (message);
 						r_list_free (files);
diff --git a/libr/util/rvc_git.c b/libr/util/rvc_git.c
index 7e69bfcbd22a4b..dd4866375a0664 100644
--- a/libr/util/rvc_git.c
+++ b/libr/util/rvc_git.c
@@ -23,7 +23,7 @@ static Rvc *open_git(const char *path) {
 	if (!vc) {
 		return NULL;
 	}
-	vc->path = R_STR_DUP (path);
+	vc->path = strdup (path);
 	if (!vc->path) {
 		free (vc);
 		return NULL;
diff --git a/libr/util/rvc_rvc.c b/libr/util/rvc_rvc.c
index f080ae433c0104..3929081fcba220 100644
--- a/libr/util/rvc_rvc.c
+++ b/libr/util/rvc_rvc.c
@@ -66,7 +66,7 @@ static Rvc *rvc_rvc_new(const char *path) {
 		R_LOG_ERROR ("Failed to create repo");
 		return NULL;
 	}
-	rvc->path = R_STR_DUP (path);
+	rvc->path = strdup (path);
 	if (!rvc->path) {
 		free (rvc);
 		return NULL;
@@ -325,7 +325,7 @@ static char *absp2rp(Rvc *rvc, const char *absp) {
 		free (arp);
 		return NULL;
 	}
-	char *p = R_STR_DUP (absp + r_str_len_utf8 (arp));
+	char *p = strdup (absp + r_str_len_utf8 (arp));
 	free (arp);
 	if (!p) {
 		return NULL;
@@ -716,7 +716,7 @@ R_API RList *branches_rvc(Rvc *rvc) {
 		if (!r_str_startswith ((char *)kv->base.key, BPREFIX)) {
 			continue;
 		}
-		if (!r_list_append (ret, R_STR_DUP ((char *)kv->base.key + bplen))
+		if (!r_list_append (ret, strdup ((char *)kv->base.key + bplen))
 				&& !ret->head->data) {
 			r_list_free (ret);
 			ret = NULL;
diff --git a/libr/util/str.c b/libr/util/str.c
index 0443c88d0efdf2..ea6aa7773ce9c9 100644
--- a/libr/util/str.c
+++ b/libr/util/str.c
@@ -673,7 +673,7 @@ R_API char *r_str_trunc_ellipsis(const char *str, int len) {
 		return strdup (str);
 	}
 	char *buf = NULL;
-	if (len) {
+	if (len > 0) {
 		buf = r_str_ndup (str, len);
 	}
 	if (buf && len > 4) {
diff --git a/libr/util/strbuf.c b/libr/util/strbuf.c
index b37f40cc872838..a681b7883ca2c2 100644
--- a/libr/util/strbuf.c
+++ b/libr/util/strbuf.c
@@ -131,7 +131,7 @@ R_API bool r_strbuf_slice(RStrBuf *sb, int from, int len) {
 	const char *fr = r_str_ansi_chrn (s, from + 1);
 	const char *to = r_str_ansi_chrn (s, from + len + 1);
 	char *r = NULL;
-	if (to - fr) {
+	if (to > fr) {
 		r = r_str_ndup (fr, to - fr);
 	}
 	r_strbuf_fini (sb);
diff --git a/libr/util/syscmd.c b/libr/util/syscmd.c
index f5105653f4e00d..238f1862fa20b0 100644
--- a/libr/util/syscmd.c
+++ b/libr/util/syscmd.c
@@ -483,7 +483,7 @@ R_API char *r_syscmd_join(const char *file1, const char *file2) {
 			}
 			r_list_foreach (list2, iter2, str2) {
 				if (r_str_startswith (str2, field)) {
-					char *out = R_STR_DUP (field);
+					char *out = strdup (field);
 					char *first = strchr (str1, ' ');
 					char *second = strchr (str2, ' ');
 					out = r_str_append (out, r_str_get_fail (first, " "));
diff --git a/shlr/ar/ar.c b/shlr/ar/ar.c
index 423677b65979f8..1b30afae197ec3 100644
--- a/shlr/ar/ar.c
+++ b/shlr/ar/ar.c
@@ -65,7 +65,7 @@ static char *name_from_table(ut64 off, filetable *tbl) {
 		return NULL;
 	}
 	char *res = NULL;
-	if (i - off - 1) {
+	if (i - off - 1 > 0) {
 		res = r_str_ndup (buf + off, i - off - 1);
 	}
 	return res;