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https://issues.apache.org/jira/browse/IMPALA-5031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16712327#comment-16712327
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ASF subversion and git services commented on IMPALA-5031:
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Commit f266d2398ad507a466dd0cfe42db204ae1917f55 in impala's branch
refs/heads/master from [~jbapple]
[ https://git-wip-us.apache.org/repos/asf?p=impala.git;h=f266d23 ]
IMPALA-5031: Extra large shifts are undefined behavior
According to [expr.shift] in the C++14 standard, an expression in
which the shift value is "greater than or equal to the length in bits
of the promoted left operand" has undefined behavior.
Change-Id: Ie9cec6b2a887e62da594975bc971d38c1d38b0a0
Reviewed-on: http://gerrit.cloudera.org:8080/11951
Reviewed-by: Jim Apple <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> UBSAN clean and method for testing UBSAN cleanliness
> ----------------------------------------------------
>
> Key: IMPALA-5031
> URL: https://issues.apache.org/jira/browse/IMPALA-5031
> Project: IMPALA
> Issue Type: Task
> Components: Backend, Infrastructure
> Affects Versions: Impala 2.9.0
> Reporter: Jim Apple
> Assignee: Jim Apple
> Priority: Minor
>
> http://releases.llvm.org/3.8.0/tools/clang/docs/UndefinedBehaviorSanitizer.html
> builds are supported after https://gerrit.cloudera.org/#/c/6186/, but
> Impala's test suite triggers many errors under UBSAN. Those errors should be
> fixed and then there should be a way to run the test suite under UBSAN and
> fail if there were any errors detected.
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