[Boost-bugs] [Boost C++ Libraries] #3926: thread_specific_ptr + dlopen library causes a SIGSEGV.

Subject: [Boost-bugs] [Boost C++ Libraries] #3926: thread_specific_ptr + dlopen library causes a SIGSEGV.
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2010-02-12 23:05:31

#3926: thread_specific_ptr + dlopen library causes a SIGSEGV.
----------------------------+-----------------------------------------------
 Reporter:  pluto@…         |       Owner:  anthonyw
     Type:  Bugs            |      Status:  new     
Milestone:  Boost 1.43.0    |   Component:  thread  
  Version:  Boost 1.42.0    |    Severity:  Problem 
 Keywords:                  |  
----------------------------+-----------------------------------------------
 hi,

 i've discovered that using thread_specific_ptr in shared library dlopened
 from thread causes a gpf.[[BR]]
 please consider following scenario:
 [[BR]][[BR]]
 spawn thread[[BR]]
 dlopen a shared library with thread_specific_ptr[[BR]]
 dlclose the library[[BR]]
 terminate the thread[[BR]]
 [[BR]]
 observe the gpf[[BR]]
 [[BR]]
 {{{
 Program received signal SIGSEGV, Segmentation fault.
 0x00007ffff62b7400 in ?? ()
 (gdb) bt
 #0  0x00007ffff62b7400 in ?? ()
 #1  0x00007ffff7221f79 in __nptl_deallocate_tsd () at pthread_create.c:154
 #2  0x00007ffff722291b in start_thread (arg=<value optimized out>) at
 pthread_create.c:304
 #3  0x00007ffff6f9293d in clone () at
 ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
 #4  0x0000000000000000 in ?? ()
 }}}
 afaics the pthread (user provided) destructor keyed to pthread specific
 data is called on dlunloaded code.[[BR]][[BR]]
 BR,[[BR]]
 Pawel.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/3926>
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