[kudu-CR] columnar serialization: fix optimized GCC build

["Todd Lipcon (Code Review)" <ge...@cloudera.org>]

Hello Kudu Jenkins, Adar Dembo, Grant Henke, 

I'd like you to reexamine a change. Please visit

    http://gerrit.cloudera.org:8080/15680

to look at the new patch set (#2).

Change subject: columnar_serialization: fix optimized GCC build
......................................................................

columnar_serialization: fix optimized GCC build

It seems that GCC with -O1 or higher is less lenient about the pointer
types passed as the first argument to the _mm_gather* intrinsics. This
was causing the Ubuntu 18 release build to fail.

I was able to reproduce the failure and fix on my own Ubuntu 18 box
using a fastdebug build.

Change-Id: I6b69470b238dae7a33fdd6b44cb8be57a26501d7
---
M src/kudu/common/columnar_serialization.cc
1 file changed, 5 insertions(+), 2 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/80/15680/2
-- 
To view, visit http://gerrit.cloudera.org:8080/15680
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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I6b69470b238dae7a33fdd6b44cb8be57a26501d7
Gerrit-Change-Number: 15680
Gerrit-PatchSet: 2
Gerrit-Owner: Todd Lipcon <to...@apache.org>
Gerrit-Reviewer: Adar Dembo <ad...@cloudera.com>
Gerrit-Reviewer: Grant Henke <gr...@apache.org>
Gerrit-Reviewer: Kudu Jenkins (120)