From: Lei Jin <lei@fb.com>
Date: Wed, 29 Oct 2014 22:38:34 +0000 (-0700)
Subject: dummy var to suppress compiler warning/error
X-Git-Tag: rocksdb-3.6.2
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=b11a617acd2f4b54e05d28f1101d0de6e9fd34e3;p=rocksdb.git

dummy var to suppress compiler warning/error

Summary: Revmoed this in D25641, causing compiler complain. put it back

Test Plan: make release

Reviewers: igor, yhchiang, rven, sdong

Reviewed By: sdong

Subscribers: dhruba, leveldb

Differential Revision: https://reviews.facebook.net/D27891
---

diff --git a/util/env_posix.cc b/util/env_posix.cc
index 98d0c3df2..289f70947 100644
--- a/util/env_posix.cc
+++ b/util/env_posix.cc
@@ -738,7 +738,8 @@ class PosixWritableFile : public WritableFile {
       // trim the extra space preallocated at the end of the file
       // NOTE(ljin): we probably don't want to surface failure as an IOError,
       // but it will be nice to log these errors.
-      ftruncate(fd_, filesize_);
+      int dummy __attribute__((unused));
+      dummy = ftruncate(fd_, filesize_);
 #ifdef ROCKSDB_FALLOCATE_PRESENT
       // in some file systems, ftruncate only trims trailing space if the
       // new file size is smaller than the current size. Calling fallocate