Re: [Boost-bugs] [Boost C++ Libraries] #13283: boost log crash during thread termination

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #13283: boost log crash during thread termination
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2018-03-22 13:19:04

#13283: boost log crash during thread termination
------------------------------------------------+---------------------
  Reporter:  Marco Strohner <marco.strohner@…>  |      Owner:  (none)
      Type:  Bugs                               |     Status:  new
 Milestone:  To Be Determined                   |  Component:  None
   Version:  Boost 1.66.0                       |   Severity:  Problem
Resolution:                                     |   Keywords:
------------------------------------------------+---------------------
Changes (by Marco Strohner):

 * version:  Boost 1.64.0 => Boost 1.66.0

Comment:

 I've tested it again with boost 1.66.0 and the behaviour is the same. I
 also tried to compile boost with ''BOOST_LOG_USE_COMPILER_TLS'' but the
 behaviour is still the same.

 My results after more debugging:
 1. the logging core creates a ''thread_data'' object for the first log
 that is executed in a thread (core.cpp:open_record). This is triggered by
 the line ''BOOST_LOG_TRIVIAL(warning) << "Destroy event #" << i;''
 2. This created ''thread_data'' object ist added to the ''tss_node'' map
 for automatic cleanup after thread execution is finished.
 3. After the thread execution is finished the ''tls_destructor'' is called
 (thread.cpp:thread_proxy). This ''tls_destructor'' destroys the in step 1
 created ''thread_data'' object
 4. When the method ''thread_proxy'' is finished the reference counter of
 the lambda parameter ''event'' is decreased and the destructor is called.
 5. The destructor tries to log one line (BOOST_LOG_TRIVIAL(warning) <<
 "crashes here";). But the method ''get_thread_data'' still returns the
 already destroyed pointer to the ''thread_data'' object.

-- 
Ticket URL: <https://svn.boost.org/trac10/ticket/13283#comment:1>
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