(gdb) bt
#0  0x280f40e6 in std::_Rb_tree_increment () from /usr/lib/libstdc++.so.5
#1  0x280f4133 in std::_Rb_tree_increment () from /usr/lib/libstdc++.so.5
#2  0x0804f167 in std::_Rb_tree_const_iterator<Request*>::operator++ (
    this=0xbfbfe710) at stl_tree.h:263
#3  0x0804c93e in ~ClientConnection (this=0x8076000) at connection.cpp:679
#4  0x0804ce1b in ClientConnection::read (this=0x8076000) at connection.cpp:794
#5  0x08050b4c in ConnectionHub::monitor (this=0x8060780) at connhub.cpp:179
#6  0x080554c3 in main () at main.cpp:64
(gdb)