Don't attempt to take ZSTR_VAL(NULL) (#1804)

Fixes #1798
phpredis · Jul 2, 2020 · ff2e160 · ff2e160
1 parent 83a1b7c
commit ff2e160
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/redis_session.c b/redis_session.c
@@ -480,7 +480,8 @@ PS_OPEN_FUNC(redis)
             }
 
             redis_sock = redis_sock_create(addr, addrlen, port, timeout, read_timeout,
-                                           persistent, ZSTR_VAL(persistent_id), retry_interval);
+                                           persistent, persistent_id ? ZSTR_VAL(persistent_id) : NULL,
+                                           retry_interval);
 
             redis_pool_add(pool, redis_sock, weight, db);
             redis_sock->prefix = prefix;