@item
This function treats @code{errno} of 0 like failure, although POSIX
requires that the message declare it as a success, on some platforms:
-FreeBSD 8.2, MacOS X 10.5.
+FreeBSD 8.2, OpenBSD 4.7, MacOS X 10.5.
@item
This function clobbers the @code{strerror} buffer on some platforms:
Cygwin 1.7.9.