cat main cpp include list int main std list int push_back return empty

$ cat main.cpp
#include <list>

int main()
{   
    std::list<int> l;
    l.push_back(1);
    return l.empty();
}

$ g++ main.cpp -O3 -Wl,--as-needed
$ ldd a.out
        linux-gate.so.1 =>  (0xb78dc000)
        libstdc++.so.6 => /usr/lib/gcc/i686-pc-linux-gnu/4.6.2/libstdc++.so.6 (0xb77d6000)
        libgcc_s.so.1 => /usr/lib/gcc/i686-pc-linux-gnu/4.6.2/libgcc_s.so.1 (0xb77ba000)
        libc.so.6 => /lib/libc.so.6 (0xb763f000)
        libm.so.6 => /lib/libm.so.6 (0xb7614000)
        /lib/ld-linux.so.2 (0xb78dd000)