I have been using the boost libraries for a number of years on non

Forgive the previous incomplete post. I am working with boost-1_34_1 on redhat EL4 update 5. My backtrace is: #0 0x56e58955 in ?? () #1 0xb7fd55f5 in boost::function0boost::function_base >::assign_to_own (this=0xb7eda390, f=@0xbffff770) at ./boost/function/function_template.hpp:647 #2 0xb7fd5081 in function0 (this=0xb7eda390, f=@0xbffff770) at ./boost/function/function_template.hpp:527 #3 0xb7fd3f1c in thread_proxy (param=0xbffff6d0) at libs/thread/src/thread.cpp:106 #4 0x00a3b3cc in start_thread () from /lib/tls/libpthread.so.0 #5 0x008b2c3e in clone () from /lib/tls/libc.so.6 Which my gdb debug session seems to point to the following: m_thread = boost::shared_ptrboost::thread (new boost::thread( boost::bind( &CMrcpTaskProcessor::ProcessTasks, this))); Regards, -----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Peter Dimov Sent: Tuesday, August 26, 2008 10:46 AM To: boost-users@lists.boost.org Subject: Re: [Boost-users] [function?] exception in assign_to_own,was: (no subject) Timothy Barrett: linux

platforms. Recently began developing on redhat EL4 and am running into an issue not seen with my library on other OS platforms. I'm getting an exception in assign_to_own. I have read the previous note on this issue in the forum but do not believe the make file for my application or for the library application are the cause of the exception. Any pointers on how to track down and resolve this issue?

What version of Boost are you using? What exception do you get? Can you post a backtrace? (I assume 'assign_to_own' comes from boost::function.) _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users

Following Peter's advice, I downloaded the patched function_template.hpp and rebuilt the boost libraries. I then rebuilt both my client library (based on boost) and client application and receive the following core dump back trace. #0 0x56e58955 in ?? () #1 0xb7fd96b2 in boost::thread_group::join_all () from /home/tbarrett/boost_134/lib/libboost_thread-gcc34-mt-1_34_1.so.1.34.1 #2 0x00a3b3cc in start_thread () from /lib/tls/libpthread.so.0 #3 0x008b2c3e in clone () from /lib/tls/libc.so.6 Was there an issue in 1_34_1 with thread_group::join_all? Thanks, -----Original Message----- From: boost-users-bounces@lists.boost.org [mailto:boost-users-bounces@lists.boost.org] On Behalf Of Peter Dimov Sent: Tuesday, August 26, 2008 11:28 AM To: boost-users@lists.boost.org Subject: Re: [Boost-users] [function?] exception in assign_to_own,was: (no subject) Timothy Barrett:

Forgive the previous incomplete post. I am working with boost-1_34_1 on redhat EL4 update 5.

My backtrace is: #0 0x56e58955 in ?? () #1 0xb7fd55f5 in boost::function0boost::function_base >::assign_to_own (this=0xb7eda390, f=@0xbffff770)

You may be encountering the thread-safety bug described in http://svn.boost.org/trac/boost/ticket/1260 I suspect that the hotfix for 1.34.x that is mentioned in #1260 is http://boost.sourceforge.net/function-1-34-fix/function_template.hpp You should try replacing your function_template.hpp with the file above and see if it helps. If you wonder how did I know where to find the hotfix - I googled 'assign_to_own' :-) _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users