https://svn.boost.org/trac10/ticket/13399 <p> Hi, </p> <p> We are using boost 1.56 version on CentOS 7.4.1708 (Core) </p> <p> This bug happens from time to time when we are restating application, while simulated multiple clients send message to the server. </p> <pre class="wiki">[Switching to Thread 0x7fffeb6ac700 (LWP 27894)] processMessageImpl ( data_="STRING DATA"...) at main.cpp:564 564 if (!client-&gt;connected) (gdb) bt full #0 processMessageImpl ( data_="CONTENT DATA DELETED"...) at main.cpp:564 parseSucc = &lt;optimized out&gt; dataStream = {&lt;std::basic_istream&lt;char, std::char_traits&lt;char&gt; &gt;&gt; = {&lt;std::basic_ios&lt;char, std::char_traits&lt;char&gt; &gt;&gt; = {&lt;std::ios_base&gt; = {_vptr.ios_base = 0x7fffeb6ac700, static boolalpha = std::_S_boolalpha, static dec = std::_S_dec, static fixed = std::_S_fixed, static hex = std::_S_hex, static internal = std::_S_internal, static left = std::_S_left, static oct = std::_S_oct, static right = std::_S_right, static scientific = std::_S_scientific, static showbase = std::_S_showbase, static showpoint = std::_S_showpoint, static showpos = std::_S_showpos, static skipws = std::_S_skipws, static unitbuf = std::_S_unitbuf, static uppercase = std::_S_uppercase, static adjustfield = std::_S_adjustfield, static basefield = std::_S_basefield, static floatfield = std::_S_floatfield, static badbit = std::_S_badbit, static eofbit = std::_S_eofbit, static failbit = std::_S_failbit, static goodbit = std::_S_goodbit, static app = std::_S_app, static ate = std::_S_ate, static binary = std::_S_bin, static in = std::_S_in, static out = std::_S_out, static trunc = std::_S_trunc, static beg = std::_S_beg, static cur = std::_S_cur, static end = std::_S_end, _M_precision = 0, _M_width = 0, _M_flags = 3825362640, _M_exception = (std::_S_badbit | std::_S_eofbit | std::_S_failbit | unknown: 32760), _M_streambuf_state = (unknown: 3825235264), _M_callbacks = 0x6ee9a0, _M_word_zero = { _M_pword = 0x7fffeb6abb30, _M_iword = 7268672}, _M_local_word = {{_M_pword = 0x0, _M_iword = 4528892}, {_M_pword = 0x0, _M_iword = 140737018779704}, {_M_pword = 0x0, _M_iword = 140737351885008}, {_M_pword = 0x6ea448, _M_iword = 140737018597424}, {_M_pword = 0x0, _M_iword = 152}, {_M_pword = 0x100007f27820002, _M_iword = 0}, {_M_pword = 0x0, _M_iword = 140733193388032}, {_M_pword = 0x4517b0 &lt;tcpServer::handle_accept(session*, boost::system::error_code const&amp;)&gt;, _M_iword = 0}}, _M_word_size = 7268672, _M_word = 0x7fffe40266d0, _M_ios_locale = {static none = 0, static ctype = 1, static numeric = 2, static collate = 4, static time = 8, static monetary = 16, static messages = 32, static all = 63, _M_impl = 0xffffffff, static _S_classic = 0x7ffff667be00 &lt;(anonymous namespace)::c_locale_impl&gt;, static _S_global = 0x7ffff667be00 &lt;(anonymous namespace)::c_locale_impl&gt;, static _S_categories = 0x7ffff665f900 &lt;__gnu_cxx::category_names&gt;, static _S_once = 2}}, _M_tie = 0x7fffe40ca4c0, _M_fill = 30 '\036', _M_fill_init = false, _M_streambuf = 0x7fffeb6abbe0, _M_ctype = 0x6bf770, _M_num_put = 0x49182c &lt;void boost::function1&lt;void, std::string&amp;&gt;::assign_to&lt;void (*)(std::string)&gt;(void (*)(std::string))::stored_vtable+12&gt;, _M_num_get = 0x1}, _vptr.basic_istream = 0x7fffeb6ac700, _M_gcount = 0}, _M_stringbuf = {&lt;std::basic_streambuf&lt;char, std::char_traits&lt;char&gt; &gt;&gt; = {_vptr.basic_streambuf = 0x0, _M_in_beg = 0x7fffe40266d0 "", _M_in_cur = 0x7fffe4007540 "0\321I", _M_in_end = 0x6ee9a0 "\200\027", _M_out_beg = 0x7fffeb6abb30 "\002", _M_out_cur = 0x6ee940 "p\327k", _M_out_end = 0x0, _M_buf_locale = {static none = 0, static ctype = 1, static numeric = 2, static collate = 4, static time = 8, static monetary = 16, static messages = 32, static all = 63, _M_impl = 0x451afc &lt;tcpServer::handle_accept(session*, boost::system::error_code const&amp;)+844&gt;, static _S_classic = 0x7ffff667be00 &lt;(anonymous namespace)::c_locale_impl&gt;, static _S_global = 0x7ffff667be00 &lt;(anonymous namespace)::c_locale_impl&gt;, static _S_categories = 0x7ffff665f900 &lt;__gnu_cxx::category_names&gt;, static _S_once = 2}}, _M_mode = (unknown: 0), _M_string = ""}} tree = {m_data = &lt;error reading variable: Cannot access memory at address 0x98&gt;, m_children = 0x9} spId = &lt;error reading variable: Cannot access memory at address 0x26f8&gt; url = "" client = 0x0 v1_9Flag = &lt;optimized out&gt; #1 0x0000000000434c8a in operator()&lt;void (*)(std::basic_string&lt;char&gt;), boost::_bi::list0&gt; (f=@0x7fffeb6abc70: 0x42f490 &lt;processMessageImpl(std::string)&gt;, a=&lt;synthetic pointer&gt;, this=0x7fffeb6abc78) at /usr/local/include/boost/bind/bind.hpp:253 No locals. #2 operator() (this=0x7fffeb6abc70) at /usr/local/include/boost/bind/bind_template.hpp:20 No locals. #3 asio_handler_invoke&lt;boost::_bi::bind_t&lt;void, void (*)(std::basic_string&lt;char&gt;), boost::_bi::list1&lt;boost::_bi::value&lt;std::basic_string&lt;char&gt; &gt; &gt; &gt; &gt; (function=...) at /usr/local/include/boost/asio/handler_invoke_hook.hpp:69 No locals. #4 invoke&lt;boost::_bi::bind_t&lt;void, void (*)(std::basic_string&lt;char&gt;), boost::_bi::list1&lt;boost::_bi::value&lt;std::basic_string&lt;char&gt; &gt; &gt; &gt;, boost::_bi::bind_t&lt;void, void (*)(std::basic_string&lt;char&gt;), boost::_bi::list1&lt;boost::_bi::value&lt;std::basic_string&lt;char&gt; &gt; &gt; &gt; &gt; (context=..., function=...) at /usr/local/include/boost/asio/detail/handler_invoke_helpers.hpp:37 No locals. #5 boost::asio::detail::completion_handler&lt;boost::_bi::bind_t&lt;void, void (*)(std::string), boost::_bi::list1&lt;boost::_bi::value&lt;std::string&gt; &gt; &gt; &gt;::do_complete (owner=0x6bf770, base=&lt;optimized out&gt;) at /usr/local/include/boost/asio/detail/completion_handler.hpp:68 h = &lt;optimized out&gt; p = {h = &lt;optimized out&gt;, v = 0x0, p = 0x0} handler = {f_ = 0x42f490 &lt;processMessageImpl(std::string)&gt;, l_ = {&lt;boost::_bi::storage1&lt;boost::_bi::value&lt;std::basic_string&lt;char, std::char_traits&lt;char&gt;, std::allocator&lt;char&gt; &gt; &gt; &gt;&gt; = {a1_ = { t_ = "CONTENT DATA DELETED"...}}, &lt;No data fields&gt;}} #6 0x000000000043ca00 in complete (bytes_transferred=&lt;optimized out&gt;, ec=..., owner=..., this=&lt;optimized out&gt;) at /usr/local/include/boost/asio/detail/task_io_service_operation.hpp:38 No locals. #7 do_run_one (ec=..., this_thread=..., lock=..., this=0x6bf770) at /usr/local/include/boost/asio/detail/impl/task_io_service.ipp:372 task_result = &lt;optimized out&gt; on_exit = {task_io_service_ = 0x6bf770, lock_ = 0x7fffeb6abcc0, this_thread_ = 0x7fffeb6abd30} more_handlers = true #8 boost::asio::detail::task_io_service::run (this=0x6bf770, ec=...) at /usr/local/include/boost/asio/detail/impl/task_io_service.ipp:149 this_thread = {&lt;boost::asio::detail::thread_info_base&gt; = {&lt;boost::asio::detail::noncopyable&gt; = {&lt;No data fields&gt;}, reusable_memory_ = 0x7fffe40983b0}, private_op_queue = {&lt;boost::asio::detail::noncopyable&gt; = {&lt;No data fields&gt;}, front_ = 0x0, back_ = 0x0}, private_outstanding_work = 0} ctx = {&lt;boost::asio::detail::noncopyable&gt; = {&lt;No data fields&gt;}, key_ = 0x6bf770, value_ = 0x7fffeb6abd30, next_ = 0x0} lock = {&lt;boost::asio::detail::noncopyable&gt; = {&lt;No data fields&gt;}, mutex_ = @0x6bf7a0, locked_ = false} n = 70 #9 0x000000000043ffb5 in boost::asio::io_service::run (this=0x6bd770 &lt;io_service&gt;) at /usr/local/include/boost/asio/impl/io_service.ipp:59 ec = {m_val = 0, m_cat = 0x7ffff7dda0d0 &lt;boost::system::system_category()::system_category_const&gt;} s = &lt;optimized out&gt; #10 0x00007ffff6ed030a in thread_proxy () from /lib64/libboost_thread.so.1.56.0 No symbol table info available. #11 0x00007ffff77bae25 in start_thread (arg=0x7fffeb6ac700) at pthread_create.c:308 __res = &lt;optimized out&gt; pd = 0x7fffeb6ac700 </pre><pre class="wiki">// Some comments here #0 processMessageImpl ( data_="{\"CONTENT DATA DELETED"...) at main.cpp:564 #1 0x0000000000434c8a in operator()&lt;void (*)(std::basic_string&lt;char&gt;), boost::_bi::list0&gt; (f=@0x7fffeb6abc70: 0x42f490 &lt;processMessageImpl(std::string)&gt;, a=&lt;synthetic pointer&gt;, this=0x7fffeb6abc78) at /usr/local/include/boost/bind/bind.hpp:253 #2 operator() (this=0x7fffeb6abc70) at /usr/local/include/boost/bind/bind_template.hpp:20 #3 asio_handler_invoke&lt;boost::_bi::bind_t&lt;void, void (*)(std::basic_string&lt;char&gt;), boost::_bi::list1&lt;boost::_bi::value&lt;std::basic_string&lt;char&gt; &gt; &gt; &gt; &gt; (function=...) at /usr/local/include/boost/asio/handler_invoke_hook.hpp:69 #4 invoke&lt;boost::_bi::bind_t&lt;void, void (*)(std::basic_string&lt;char&gt;), boost::_bi::list1&lt;boost::_bi::value&lt;std::basic_string&lt;char&gt; &gt; &gt; &gt;, boost::_bi::bind_t&lt;void, void (*)(std::basic_string&lt;char&gt;), boost::_b i::list1&lt;boost::_bi::value&lt;std::basic_string&lt;char&gt; &gt; &gt; &gt; &gt; (context=..., function=...) at /usr/local/include/boost/asio/detail/handler_invoke_helpers.hpp:37 #5 boost::asio::detail::completion_handler&lt;boost::_bi::bind_t&lt;void, void (*)(std::string), boost::_bi::list1&lt;boost::_bi::value&lt;std::string&gt; &gt; &gt; &gt;::do_complete (owner=0x6bf770, base=&lt;optimized out&gt;) at /usr/local/include/boost/asio/detail/completion_handler.hpp:68 #6 0x000000000043ca00 in complete (bytes_transferred=&lt;optimized out&gt;, ec=..., owner=..., this=&lt;optimized out&gt;) at /usr/local/include/boost/asio/detail/task_io_service_operation.hpp:38 #7 do_run_one (ec=..., this_thread=..., lock=..., this=0x6bf770) at /usr/local/include/boost/asio/detail/impl/task_io_service.ipp:372 #8 boost::asio::detail::task_io_service::run (this=0x6bf770, ec=...) at /usr/local/include/boost/asio/detail/impl/task_io_service.ipp:149 #9 0x000000000043ffb5 in boost::asio::io_service::run (this=0x6bd770 &lt;io_service&gt;) at /usr/local/include/boost/asio/impl/io_service.ipp:59 #10 0x00007ffff6ed030a in thread_proxy () from /lib64/libboost_thread.so.1.56.0 #11 0x00007ffff77bae25 in start_thread (arg=0x7fffeb6ac700) at pthread_create.c:308 #12 0x00007ffff5b9234d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:113 </pre> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/13399 Trac 1.4.3 ttomas.mikalauskas@… Tue, 16 Jan 2018 09:14:23 GMT