5 POSIX specification: @url{http://www.opengroup.org/onlinepubs/9699919799/functions/gets.html}
9 Portability problems fixed by Gnulib:
13 Portability problems not fixed by Gnulib:
16 This function should never be used, because it can overflow any given buffer.
18 On Windows platforms (excluding Cygwin), this function does not set @code{errno}