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[ft-lib/bcache] add a check to list_pop()

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This commit is contained in:
Joe Thornber 2018-01-25 15:47:12 +00:00
parent 1122b9a423
commit 12c760f05c
1 changed files with 3 additions and 0 deletions
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3
ft-lib/bcache.c
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@ -51,6 +51,9 @@ static inline struct list_head *list_pop(struct list_head *head)
{ {
struct list_head *l; struct list_head *l;
if (head->next == head)
raise("list is empty\n");
l = head->next; l = head->next;
list_del(l); list_del(l);
return l; return l;