1#include "stdio_impl.h"
 2
 3/* This function assumes it will never be called if there is already
 4 * data buffered for reading. */
 5
 6int __uflow(FILE *f)
 7{
 8	unsigned char c;
 9	if (!__toread(f) && f->read(f, &c, 1)==1) return c;
10	return EOF;
11}