/* Binary mode I/O.
- Copyright (C) 2001, 2003, 2005, 2008, 2009 Free Software
- Foundation, Inc.
+ Copyright (C) 2001, 2003, 2005, 2008-2011 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
# undef O_BINARY
# undef O_TEXT
#endif
+
+/* SET_BINARY (fd);
+ changes the file descriptor fd to perform binary I/O. */
#if O_BINARY
# if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__
# include <io.h> /* declares setmode() */
/* Avoid putting stdin/stdout in binary mode if it is connected to
the console, because that would make it impossible for the user
to interrupt the program through Ctrl-C or Ctrl-Break. */
-# define SET_BINARY(fd) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0)
+# define SET_BINARY(fd) ((void) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0))
# else
-# define SET_BINARY(fd) setmode (fd, O_BINARY)
+# define SET_BINARY(fd) ((void) setmode (fd, O_BINARY))
# endif
#else
/* On reasonable systems, binary I/O is the default. */
# undef O_BINARY
# define O_BINARY 0
-# define SET_BINARY(fd) /* nothing */
+# define SET_BINARY(fd) /* do nothing */ ((void) 0)
#endif
#endif /* _BINARY_H */