From 8c7c97d1b3af8c99af43dcaff7ae1d9315a03835 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabiano=20Fid=C3=AAncio?= <fidencio@redhat.com>
Date: Tue, 21 Mar 2017 20:56:38 +0100
Subject: [PATCH 51/54] DLINKLIST: Add DLIST_FOR_EACH_SAFE macro
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This macro, as DLIST_FOR_EACH, iterates over the whole list. The main
difference between both is that in the _SAFE version the pointer to the
next list node is stored, allowing us to delete the current node safely.

Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>

Reviewed-by: Sumit Bose <sbose@redhat.com>
Reviewed-by: Pavel Březina <pbrezina@redhat.com>
---
 src/util/dlinklist.h | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/util/dlinklist.h b/src/util/dlinklist.h
index 4f6aef830e914c22654970081263d43461c1750f..017c60468e66dbec15724d5f4832da412f42136b 100644
--- a/src/util/dlinklist.h
+++ b/src/util/dlinklist.h
@@ -147,4 +147,9 @@ do { \
 #define DLIST_FOR_EACH(p, list) \
     for ((p) = (list); (p) != NULL; (p) = (p)->next)
 
+#define DLIST_FOR_EACH_SAFE(p, q, list) \
+    for ((p) = (list), (q) = (p) != NULL ? (p)->next : NULL; \
+         (p) != NULL; \
+         (p) = (q), (q) = (p) != NULL ? (p)->next : NULL)
+
 #endif /* _DLINKLIST_H */
-- 
2.9.3