From: Lennart Poettering <lennart@poettering.net>
Date: Wed, 17 Oct 2018 19:05:33 +0000 (+0200)
Subject: list: fix double avaluation in LIST_APPEND()
X-Git-Tag: v240~527^2~5
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3088305166df1532778e88a96a293f88315f9f25;p=thirdparty%2Fsystemd.git

list: fix double avaluation in LIST_APPEND()
---

diff --git a/src/basic/list.h b/src/basic/list.h
index 643e0bea888..040680c30ad 100644
--- a/src/basic/list.h
+++ b/src/basic/list.h
@@ -38,9 +38,9 @@
 /* Append an item to the list */
 #define LIST_APPEND(name,head,item)                                     \
         do {                                                            \
-                typeof(*(head)) *_tail;                                 \
-                LIST_FIND_TAIL(name,head,_tail);                        \
-                LIST_INSERT_AFTER(name,head,_tail,item);                \
+                typeof(*(head)) **_hhead = &(head), *_tail;             \
+                LIST_FIND_TAIL(name, *_hhead, _tail);                   \
+                LIST_INSERT_AFTER(name, *_hhead, _tail, item);          \
         } while (false)
 
 /* Remove an item from the list */