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} 12