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  1. Documentation
  2. DOCS-13253

Investigate changes in SERVER-44617: $regexFind crash when one of the capture group doesn't match the input but pattern matches

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    Details

    • Type: Task
    • Status: Internal Review
    • Priority: Major - P3
    • Resolution: Unresolved
    • Affects Version/s: None
    • Fix Version/s: 4.3.3, 4.2.2
    • Component/s: manual, Server
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      Description

      Description

      Downstream Change Summary

      With this change, we will put a 'null' placeholder if there is a non-matching capture group. We should clarify this new semantics using an example in the docs.

      This is also backported to 4.2. We will need to update the docs for 4.2 as well.

      Description of Linked Ticket

      When running a simple regex query against 4.2.1 the mongod will crash with:

      2019-11-14T05:52:41.884-0500 F  -        [conn1] terminate() called. An exception is active; attempting to gather more information
      2019-11-14T05:52:41.982-0500 F  -        [conn1] std::exception::what(): out of range
      

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                Dates

                • Created:
                  Updated:
                  Days since reply:
                  7 weeks, 4 days ago