[Bug libstdc++/57691] freestanding libstdc++ has compile error

[paolo.carlini at oracle dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57691

--- Comment #4 from Paolo Carlini <paolo.carlini at oracle dot com> ---
... by the way, I'm *very* surprised that nobody noticed this over the years:
the freestanding atexit is declared like this in <cstdlib> in 4.0.0!?!