X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Futil%2Flist.h;h=e8a99ac8e008c3103eee2a45c00d2c8d5321714d;hb=8dd985351675c0d31f6a3f757727b92b71c711ff;hp=f0dec5da60874c7cf9e6028589e9d1f03697816b;hpb=ff8895ba5606372f368917b97b8c4380bb822234;p=mesa.git

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)