* MDF [mqtt_public] a safety checker for nng_Strdup

JaylinYu · JaylinYu · commit 28c688c4d2a4 · 2026-01-14T12:55:49.000+08:00
Signed-off-by: Jaylin &lt;jaylin@emqx.io&gt;
diff --git a/src/supplemental/mqtt/mqtt_public.c b/src/supplemental/mqtt/mqtt_public.c
@@ -1143,7 +1143,7 @@ nng_mqtt_set_sqlite_conf(nng_mqtt_sqlite_option *opt, void *config,
     const char *bridge_name, uint8_t pro_ver, void *conf_sqlite)
 {
 	opt->bridge          = config;
-	opt->bridge_name     = nng_strdup(bridge_name);
+	opt->bridge_name     = bridge_name ? nng_strdup(bridge_name) : NULL;
 	opt->proto_ver       = pro_ver;
 	opt->sqlite_conf     = conf_sqlite;
 }

Original file line number	Diff line number	Diff line change
`@@ -1143,7 +1143,7 @@ nng_mqtt_set_sqlite_conf(nng_mqtt_sqlite_option opt, void config,`
`1143`	`1143`	`const char bridge_name, uint8_t pro_ver, void conf_sqlite)`
`1144`	`1144`	`{`
`1145`	`1145`	`opt->bridge = config;`
`1146`		`- opt->bridge_name = nng_strdup(bridge_name);`
	`1146`	`+ opt->bridge_name = bridge_name ? nng_strdup(bridge_name) : NULL;`
`1147`	`1147`	`opt->proto_ver = pro_ver;`
`1148`	`1148`	`opt->sqlite_conf = conf_sqlite;`
`1149`	`1149`	`}`