Zach Amsden has posted comments on this change.

Change subject: IMPALA-5123: Fix ASAN use after free in timezone_db
......................................................................


Patch Set 4:

(2 comments)

I also worked out another alternative - but then noticed the Open Group 
definition of mkstemp() has stronger guarantees that it will not select a 
duplicate filename if one already exists at the time of the call which is 
something a boost::filesystem::unique_file based solution can't provide.  The 
Linux man page for mkstemp does not mention this behvaior.  Posting anyway, but 
I'll revert and apply the WS and comment changes.

http://pubs.opengroup.org/onlinepubs/009695399/functions/mkstemp.html

http://gerrit.cloudera.org:8080/#/c/6503/4/be/src/exprs/timezone_db.cc
File be/src/exprs/timezone_db.cc:

PS4, Line 674:   
> remove one space
Done


PS4, Line 676: std
> remove std::
Done


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Gerrit-MessageType: comment
Gerrit-Change-Id: I490f741403ea2004bc51394aa1251577337b1e1d
Gerrit-PatchSet: 4
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Zach Amsden <zams...@cloudera.com>
Gerrit-Reviewer: Bharath Vissapragada <bhara...@cloudera.com>
Gerrit-Reviewer: Henry Robinson <he...@cloudera.com>
Gerrit-Reviewer: Jim Apple <jbapple-imp...@apache.org>
Gerrit-Reviewer: Lars Volker <l...@cloudera.com>
Gerrit-Reviewer: Zach Amsden <zams...@cloudera.com>
Gerrit-HasComments: Yes

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