Ensure EBADF returns for socket functions on mingw. * lib/accept.c (rpl_accept): Fail with error EBADF if the file descriptor is invalid. * lib/bind.c (rpl_bind): Likewise. * lib/connect.c (rpl_connect): Likewise. * lib/getpeername.c (rpl_getpeername): Likewise. * lib/getsockname.c (rpl_getsockname): Likewise. * lib/getsockopt.c (rpl_getsockopt): Likewise. * lib/listen.c (rpl_listen): Likewise. * lib/recv.c (rpl_recv): Likewise. * lib/recvfrom.c (rpl_recvfrom): Likewise. * lib/send.c (rpl_send): Likewise. * lib/sendto.c (rpl_sendto): Likewise. * lib/setsockopt.c (rpl_setsockopt): Likewise. * lib/shutdown.c (rpl_shutdown): Likewise.

#ifndef _GL_DI_SET_H
# define _GL_DI_SET_H

# include <sys/types.h>

# undef _GL_ATTRIBUTE_NONNULL
# if __GNUC__ == 3 && __GNUC_MINOR__ >= 3 || 3 < __GNUC__
#  define _GL_ATTRIBUTE_NONNULL(m) __attribute__ ((__nonnull__ (m)))
# else
#  define _GL_ATTRIBUTE_NONNULL(m)
# endif

struct di_set *di_set_alloc (void);
int di_set_insert (struct di_set *, dev_t, ino_t) _GL_ATTRIBUTE_NONNULL (1);
void di_set_free (struct di_set *) _GL_ATTRIBUTE_NONNULL (1);
int di_set_lookup (struct di_set *dis, dev_t dev, ino_t ino)
  _GL_ATTRIBUTE_NONNULL (1);

#endif