Bug: https://bugs.gentoo.org/894348
Upstream PR: https://github.com/lxc/lxcfs/pull/610
--- a/src/proc_loadavg.c
+++ b/src/proc_loadavg.c
@@ -603,12 +603,12 @@ pthread_t load_daemon(int load_use)
 
 	ret = init_load();
 	if (ret == -1)
-		return log_error(0, "Initialize hash_table fails in load_daemon!");
+		return (pthread_t) log_error(0, "Initialize hash_table fails in load_daemon!");
 
 	ret = pthread_create(&pid, NULL, load_begin, NULL);
 	if (ret != 0) {
 		load_free();
-		return log_error(0, "Create pthread fails in load_daemon!");
+		return (pthread_t) log_error(0, "Create pthread fails in load_daemon!");
 	}
 
 	/* use loadavg, here loadavg = 1*/