„А воз и ныне там“
gcc-4.8.2
/usr/lib/gcc/x86_64-pc-linux-gnu/4.8.2/include/g++-v4/bits/stl_list.h:871
/** Returns the number of elements in the %list. */
size_type
size() const _GLIBCXX_NOEXCEPT
{ return std::distance(begin(), end()); }
_Winnie C++ Colorizer