From 0252ba26c545a9752b158470cb66741df0f222ce Mon Sep 17 00:00:00 2001
From: Timothy Arceri <timothy.arceri@collabora.com>
Date: Wed, 11 Jan 2017 15:13:35 +1100
Subject: util: fix list_is_singular()

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>
---
 src/util/list.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/util/list.h b/src/util/list.h
index e8a99ac8e0..07eb9f3e6a 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)
-- 
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