@itemize
@item
This variable is missing on some platforms:
-MacOS X 10.3, FreeBSD 6.0, OpenBSD 3.8, IRIX 6.5, OSF/1 5.1, Cygwin.
+MacOS X 10.3, FreeBSD 6.0, OpenBSD 3.8, IRIX 6.5, OSF/1 5.1.
@item
The address of this variable is not a compile-time constant on some platforms:
Cygwin, mingw.