Joe McDonnell has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/19104 )

Change subject: IMPALA-11640/IMPALA-11641: Workaround errors in shared library 
build on Ubuntu 18+
......................................................................


Patch Set 1:

(3 comments)

Thanks for the comments

http://gerrit.cloudera.org:8080/#/c/19104/1//COMMIT_MSG
Commit Message:

http://gerrit.cloudera.org:8080/#/c/19104/1//COMMIT_MSG@11
PS1, Line 11: unwind_safeness.cc:76] Check failed: !error failed to find symbol 
dlopen
> This line could be surrounded by empty lines to emphasise that it is an exa
Done


http://gerrit.cloudera.org:8080/#/c/19104/1/be/src/kudu/util/debug/unwind_safeness.cc
File be/src/kudu/util/debug/unwind_safeness.cc:

http://gerrit.cloudera.org:8080/#/c/19104/1/be/src/kudu/util/debug/unwind_safeness.cc@36
PS1, Line 36:   ((decltype(&func_name))g_orig_ ## func_name)(__VA_ARGS__)
> To avoid dereferencing a NULL pointer in at least debug builds, we could ch
Good point, I added the DCHECK that you recommended.


http://gerrit.cloudera.org:8080/#/c/19104/1/be/src/kudu/util/debug/unwind_safeness.cc@77
PS1, Line 77:   CHECK(!error) << "failed to find symbol " << sym << ": " << 
error;
> Afaik the error in older systems is reporting the failure of dlsym through
Good idea, I added an additional CHECK for ret being non null after this check.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Iaab196b3d669ccc12854a98d0dbfbae2b9b91244
Gerrit-Change-Number: 19104
Gerrit-PatchSet: 1
Gerrit-Owner: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Daniel Becker <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Michael Smith <[email protected]>
Gerrit-Comment-Date: Tue, 11 Oct 2022 23:08:28 +0000
Gerrit-HasComments: Yes

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