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#1  0xb79a50f1 in abort () from /lib/libc.so.6
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#2  0xb7bc47c0 in __gnu_cxx::__verbose_terminate_handler () from /usr/lib/libstdc++.so.6
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#3  0xb7bc2065 in ?? () from /usr/lib/libstdc++.so.6
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#4  0xb7bc20a2 in std::terminate () from /usr/lib/libstdc++.so.6
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#5  0xb7bc21ca in __cxa_throw () from /usr/lib/libstdc++.so.6
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#6  0xb7b58e4f in std::__throw_out_of_range () from /usr/lib/libstdc++.so.6
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#7  0x080e5853 in std::vector<std::string, std::allocator<std::string> >::_M_range_check (this=0x81c979c, __n=0)
    at /usr/lib/gcc/i486-linux-gnu/4.0.4/../../../../include/c++/4.0.4/bits/stl_vector.h:518
518               __throw_out_of_range(__N("vector::_M_range_check"));
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#8  0x080e5976 in std::vector<std::string, std::allocator<std::string> >::at (this=0x81c979c, __n=0)
    at /usr/lib/gcc/i486-linux-gnu/4.0.4/../../../../include/c++/4.0.4/bits/stl_vector.h:554
554             _M_range_check(__n);
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#9  0x080e59a9 in vector_lookup<std::string> (v=@0x81c979c, pos=0) at ../../common.hpp:92
92        return v.at(pos);
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#10 0x080e205c in Options::print (this=0x81c52e4, marking=@0x81c9a1c, pos=1) at options.cpp:345
345           string value = vector_lookup(o->values, o->pos);