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https://issues.apache.org/jira/browse/IMPALA-5031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16872462#comment-16872462
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ASF subversion and git services commented on IMPALA-5031:
---------------------------------------------------------
Commit 446939f818d43a5be2967f1d8db26c42bc34cf54 in impala's branch
refs/heads/2.x from Jim Apple
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=446939f ]
IMPALA-5031: Fix undefined behavior: memset NULL
memset has undefined behavior when its first argument is NULL. The
instance fixed here was found by Clang's undefined behavior sanitizer.
It was found in the end-to-end tests. The interesting part of the
stack trace is:
be/src/util/bitmap.h:78:12: runtime error: null pointer passed as argument 1,
which is declared to never be null
/usr/include/string.h:62:79: note: nonnull attribute specified here
#0 0x2ccb59b in Bitmap::SetAllBits(bool) be/src/util/bitmap.h:78:5
#1 0x2cb6b9e in NestedLoopJoinNode::ResetMatchingBuildRows(RuntimeState*,
long) be/src/exec/nested-loop-join-node.cc:176:27
#2 0x2cb5ad6 in NestedLoopJoinNode::Open(RuntimeState*)
be/src/exec/nested-loop-join-node.cc:90:43
Change-Id: I804f642f4be3b74c24f871f656c5147ee226d2c8
Reviewed-on: http://gerrit.cloudera.org:8080/11042
Reviewed-by: Impala Public Jenkins <[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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