[Bug libstdc++/59974] ostream crashes on large numbers under Windows

[pinskia at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59974

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
C99 says they return the number of characters that would have been written for
the return value of snprintf.  Now older versions of glibc (2.0.6) are broken
the same way mingw is broken.