diff options
| -rw-r--r-- | src/util/list.h | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/util/list.h b/src/util/list.h index f0dec5da608..e8a99ac8e00 100644 --- a/src/util/list.h +++ b/src/util/list.h @@ -71,12 +71,18 @@ static inline void list_addtail(struct list_head *item, struct list_head *list) list->prev = item; } +static inline bool list_empty(struct list_head *list); + static inline void list_replace(struct list_head *from, struct list_head *to) { - to->prev = from->prev; - to->next = from->next; - from->next->prev = to; - from->prev->next = to; + if (list_empty(from)) { + list_inithead(to); + } else { + to->prev = from->prev; + to->next = from->next; + from->next->prev = to; + from->prev->next = to; + } } static inline void list_del(struct list_head *item) |