#0  _wordcopy_bwd_dest_aligned (dstp=22335496, srcp=22335480, len=2305843009208529452) at wordcopy.c:400
  [Error: wordcopy.c was not found in source tree]
#1  0x00007f51197104c7 in __memmove_sse2 (dest=0x3cb3ebc, src=<optimized out>, len=18446744073709551604) at ../string/memmove.c:102
  [Error: ../string/memmove.c was not found in source tree]
#2  0x00007f5106bc66d8 in ?? ()
#3  0x0000000003cb3eb8 in ?? ()
#4  0x00007f5119d15883 in std::basic_string<char, std::char_traits<char>, std::allocator<char> >::basic_string(std::string const&) () from /tmp/tmphTrMoP/usr/lib/x86_64-linux-gnu/libstdc++.so.6
#5  0x0000000000000000 in ?? ()