From: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Date: Wed, 1 Nov 2017 22:01:24 +0000 (+0100)
Subject: util-lib: mark variable with _unused_ to silence clang warning
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=22662de7edd00b87e5e8d8b4d76cda5a56344117;p=elogind.git

util-lib: mark variable with _unused_ to silence clang warning

_unused_ means "the variable is meant to be possible unused and gcc
will not generate a warning about it", which is exactly what we need here,
since we're only declaring it for the side effect of _cleanup_.
---

diff --git a/src/basic/fileio.c b/src/basic/fileio.c
index 46b8b4a69..6800b9297 100644
--- a/src/basic/fileio.c
+++ b/src/basic/fileio.c
@@ -1568,7 +1568,7 @@ int read_line(FILE *f, size_t limit, char **ret) {
         }
 
         {
-                _cleanup_(funlockfilep) FILE *flocked = f;
+                _unused_ _cleanup_(funlockfilep) FILE *flocked = f;
                 flockfile(f);
 
                 for (;;) {