id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
13408	Boost Library Possible memory Leak	anonymous	viboes	"Hi,

We have been using Boost library in the project. I've made analysis by
using Valgrind tool to be able to find possible memory leaks. According
to the result, there is a memory leak in Boost library.


{{{
==7535== 24 bytes in 1 blocks are still reachable in loss record 2 of 6
==7535==    at 0x4C2B0E0: operator new(unsigned long)
(vg_replace_malloc.c:324)
==7535==    by 0x4E430A3: boost::detail::make_external_thread_data()
(in /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.55.0)
==7535==    by 0x4E433DB: boost::detail::add_new_tss_node(void const*,
boost::shared_ptr<boost::detail::tss_cleanup_function>, void*)
(in /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.55.0)
==7535==    by 0x4E4408C: boost::detail::set_tss_data(void const*,
boost::shared_ptr<boost::detail::tss_cleanup_function>, void*, bool)
(in /usr/lib/x86_64-linux-gnu/libboost_thread.so.1.55.0)
==7535==    by 0x54CAC0C:
boost::log::v2_mt_posix::core::add_thread_attribute(boost::log::v2_mt_posix::attribute_name const&, boost::log::v2_mt_posix::attribute const&)
}}}



It seems like the allocated memory is not deallocated, so it causes
memory leak. Here is the definition of relevant event ;


{{{
       thread_data_base* make_external_thread_data()
        {
            thread_data_base* const
me(detail::heap_new<externally_launched_thread>());
            me->self.reset(me);
            set_current_thread_data(me);
            return me;
        }


        thread_data_base* get_or_make_current_thread_data()
        {
            thread_data_base*
current_thread_data(get_current_thread_data());
            if(!current_thread_data)
            {
                current_thread_data=make_external_thread_data();
            }
            return current_thread_data;
        }

}}}

I've made some research if there is any post which states that this
event causes memory leak, but could not find any. Is there any fix for
the problem stated above? If there is any, could you please state the
relevant patch ?

Thanks in advance,

Kind Regards


"	Support Requests	assigned	To Be Determined	thread	Boost 1.63.0	Problem