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util: fix list_is_singular()

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Currently its dependant on the user calling and checking the result
of list_empty() before using the result of list_is_singular().

Cc: "13.0" <mesa-stable@lists.freedesktop.org>
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
This commit is contained in:
Timothy Arceri 2017-01-11 15:13:35 +11:00
parent 5857858aa6
commit 0252ba26c5
1 changed files with 1 additions and 1 deletions
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2
src/util/list.h
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@ -110,7 +110,7 @@ static inline bool list_empty(struct list_head *list)
*/
static inline bool list_is_singular(const struct list_head *list)
{
return list->next != NULL && list->next->next == list;
return list->next != NULL && list->next != list && list->next->next == list;
}
static inline unsigned list_length(struct list_head *list)