#if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
-/* _get_osfhandle */
-# include <io.h>
-
/* FlushFileBuffers */
# define WIN32_LEAN_AND_MEAN
# include <windows.h>
# include <errno.h>
+/* Get _get_osfhandle. */
+# include "msvc-nothrow.h"
+
int
fsync (int fd)
{