Re: [Boost-users] [function?] exception in assign_to_own, was: (no subject)

From: Timothy Barrett (timothy.barrett_at_[hidden])
Date: 2008-08-26 15:46:53

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_at_[hidden]
[mailto:boost-users-bounces_at_[hidden]] On Behalf Of Peter Dimov
Sent: Tuesday, August 26, 2008 11:28 AM
To: boost-users_at_[hidden]
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::function0<void,
> std::allocator<boost::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' :-) 

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