<bits/fs_path.h>std::string
generic_string() const;template<
typename _CharT,
typename _Traits = std::char_traits<_CharT>,
typename _Allocator = std::allocator<_CharT>>
std::basic_string<_CharT, _Traits, _Allocator>
generic_string(_Allocator const& __a = _Allocator()) const;