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Posted to issues@impala.apache.org by "Zoram Thanga (JIRA)" <ji...@apache.org> on 2018/04/25 22:45:00 UTC

[jira] [Created] (IMPALA-6936) LLVM in aggressive optimization mode generates toxic x86 assembly for StringFunctions::Trim

Zoram Thanga created IMPALA-6936:
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             Summary:  LLVM in aggressive optimization mode generates toxic x86 assembly for StringFunctions::Trim
                 Key: IMPALA-6936
                 URL: https://issues.apache.org/jira/browse/IMPALA-6936
             Project: IMPALA
          Issue Type: Bug
          Components: Backend
    Affects Versions: Impala 2.11.0
            Reporter: Zoram Thanga
            Assignee: Zoram Thanga
             Fix For: Impala 2.11.0


The aggressively optimized IR->x86 assembly translation for UnionNode::MaterializeBatch() generates code for StringFunctions::Trim() that causes a crash in memcpy() due to bad addresses being passed in.



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