@item
On Windows platforms (excluding Cygwin), error codes for @code{accept} are not
placed in @code{errno}, and @code{WSAGetLastError} must be used instead.
+@item
+This function fails when the @code{nfds} argument is 0 on some platforms:
+Interix 3.5.
@end itemize
Portability problems not fixed by Gnulib: