[Mesa-dev] [PATCH] util: fix list_is_singular()

[Timothy Arceri]

Currently its dependant on the user calling and checking the result
of list_empty() before using the result of list_is_singular().
---
 src/util/list.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/util/list.h b/src/util/list.h
index e8a99ac..07eb9f3 100644
--- a/src/util/list.h
+++ b/src/util/list.h
@@ -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)
-- 
2.9.3