Created attachment 654335 [details]
core file

When opening coredump for pinger (part of squid). following occurs:
#17 0x000056267a78966c in IcmpPinger::Recv (this=0x56267a99b620 <control>) at IcmpPinger.cc:166
        _dbo = warning: can't find linker symbol for virtual table for `std::basic_ostream<char, std::char_traits<char> >' value
warning:   found `construction vtable for std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >-in-Debug::OutStream' instead
@0x56267b3f16c0: warning: can't find linker symbol for virtual table for `std::basic_ostream<char, std::char_traits<char> >' value
warning:   found `construction vtable for std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >-in-Debug::OutStream' instead
{<std::basic_ios<char, std::char_traits<char> >> = {<std::ios_base> = {_vptr.ios_base = 0x56267a994978 <construction vtable for std::__cxx11::basic_ostringstream<char, std::char_traits<char>, std::allocator<char> >-in-Debug::OutStream+64>, 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 = 2, _M_width = 0, _M_flags = 4102, _M_exception = std::_S_goodbit, _M_streambuf_state = std::_S_goodbit, _M_callbacks = 0x0, _M_word_zero = {_M_pword = 0x0, _M_iword = 0}, _M_local_word = {../../gdb/value.c:823: internal-error: value_contents_bits_eq: Assertion `offset2 + length <= TYPE_LENGTH (val2->enclosing_type) * TARGET_CHAR_BIT' failed.
A problem internal to GDB has been detected,
further debugging may prove unreliable.