[Impala-ASF-CR] IMPALA-4498: crash in to utc timestamp/from utc timestamp

["Tim Armstrong (Code Review)" <ge...@cloudera.org>]

Tim Armstrong has uploaded a new patch set (#2).

Change subject: IMPALA-4498: crash in to_utc_timestamp/from_utc_timestamp
......................................................................

IMPALA-4498: crash in to_utc_timestamp/from_utc_timestamp

The bugs was that the functions did not check whether the conversion
pushed the value out of range. The fix is to use boost's validation
immediately to check the validity of the timestamp and catch any
exceptions thrown.

It would be preferable to avoid the exceptions, but Boost does not
provide a straightforward way to disable the exceptions or extract
potentially-invalid values from a date object.

Testing:
Added expression tests that exercise out-of-range cases. Also
added additional tests to confirm that date addition and subtraction
weren't affected by similar bugs.

Change-Id: Idc427b06ac33ec874a05cb98d01c00e970d3dde6
---
M be/src/exprs/expr-test.cc
M be/src/exprs/timestamp-functions.cc
M be/src/runtime/timestamp-value.h
M testdata/workloads/functional-query/queries/QueryTest/exprs.test
4 files changed, 139 insertions(+), 22 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/51/5251/2
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Idc427b06ac33ec874a05cb98d01c00e970d3dde6
Gerrit-PatchSet: 2
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Tim Armstrong <ta...@cloudera.com>