Program received signal SIGABRT, Aborted.
0x00002b8072498c9b in raise () from /lib/libc.so.6
(gdb) bt
#0  0x00002b8072498c9b in raise () from /lib/libc.so.6
#1  0x00002b807249a650 in abort () from /lib/libc.so.6
#2  0x00002b80724d063b in ?? () from /lib/libc.so.6
#3  0x00002b80724d81a1 in ?? () from /lib/libc.so.6
#4  0x00002b80724d995d in malloc () from /lib/libc.so.6
#5  0x00002b8071d958fd in operator new () from /usr/lib/libstdc++.so.6
#6  0x0000000000402d6a in __gnu_cxx::new_allocator<std::_Rb_tree_node<int> >::allocate (this=0x7fff38fef170, __n=1)
    at /usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../include/c++/4.1.2/ext/new_allocator.h:88
#7  0x0000000000402d8e in std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>, std::allocator<int> >::_M_get_node (this=0x7fff38fef170)
    at /usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:358
#8  0x0000000000402daa in std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>, std::allocator<int> >::_M_create_node (this=0x7fff38fef170, __x=@0x7fff38fef088)
    at /usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:367
#9  0x0000000000402e61 in std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>, std::allocator<int> >::_M_insert (this=0x7fff38fef170, __x=0x0, __p=0x605540,
    __v=@0x7fff38fef088) at /usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:819
#10 0x0000000000403046 in std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>, std::allocator<int> >::insert_unique (this=0x7fff38fef170, __v=@0x7fff38fef088)
    at /usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_tree.h:931
#11 0x00000000004030d1 in std::set<int, std::less<int>, std::allocator<int> >::insert (this=0x7fff38fef170, __x=@0x7fff38fef088)
    at /usr/lib/gcc/x86_64-linux-gnu/4.1.2/../../../../include/c++/4.1.2/bits/stl_set.h:321
#12 0x0000000000401ca3 in client_accept (listen=5, client_array=@0x7fff38fef170) at my_net.h:80
#13 0x0000000000402455 in main () at server.cpp:57