From: Tom Gundersen <teg@jklm.no>
Date: Sat, 26 Oct 2013 11:41:31 +0000 (+0200)
Subject: STRV_FOREACH_BACWARDS: start at the tail of the list
X-Git-Tag: v209~1783
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=5ecb28f69ef670c7e194b656b57fda6f8850f0ba;p=elogind.git

STRV_FOREACH_BACWARDS: start at the tail of the list

Otherwise, the user would have to manually initialize the pointer. Nobody currently uses this code,
so the change in behaviour sohuld be fine.
---

diff --git a/src/shared/strv.h b/src/shared/strv.h
index f6fb033a8..571ea38a7 100644
--- a/src/shared/strv.h
+++ b/src/shared/strv.h
@@ -75,7 +75,8 @@ bool strv_overlap(char **a, char **b) _pure_;
         for ((s) = (l); (s) && *(s); (s)++)
 
 #define STRV_FOREACH_BACKWARDS(s, l)            \
-        for (; (l) && ((s) >= (l)); (s)--)
+        STRV_FOREACH(s, l) ;                    \
+                for ((s)--; (l) && ((s) >= (l)); (s)--)
 
 #define STRV_FOREACH_PAIR(x, y, l)               \
         for ((x) = (l), (y) = (x+1); (x) && *(x) && *(y); (x) += 2, (y) = (x + 1))