[PR] Prevent message loss when the calculation of a logged value also logs [logging-log4cxx]

["swebb2066 (via GitHub)" <gi...@apache.org>]

swebb2066 opened a new pull request, #594:
URL: https://github.com/apache/logging-log4cxx/pull/594

   When logging a complex (multiple value) message (using MessageBuffer) where a value in the message is provided by a function that also outputs a log complex message (using MessageBuffer), the std::stringstream object can be cleared to compose the lower level log message.
   
   As log messages are relied on to illuminate the behaviour of a complex program, this causes severe confusion.
   
   This PR adds multple (3) std::stringstream objects per thread to prevent this confusing situation for most cases - when 2 levels of the above pattern arise)


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Re: [PR] Prevent message loss when the calculation of a logged value also logs [logging-log4cxx]

["swebb2066 (via GitHub)" <gi...@apache.org>]

swebb2066 merged PR #594:
URL: https://github.com/apache/logging-log4cxx/pull/594


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