Strange error in binary files and RLE

[harmodrew]

with Qt library I've found the feof() implementation. it consist of a macro which test the eof flag in the file stream:

#define feof(__F)     ((__F)->_flag & _IOEOF) 

where the filebuffer struct is:

typedef struct _iobuf
{
	char*	_ptr;
	int	_cnt;
	char*	_base;
	int	_flag;  // <- this is the inspected flag
	int	_file;
	int	_charbuf;
	int	_bufsiz;
	char*	_tmpfname;
} FILE;

so feof() waits that the reading functions set the file buf EOF- flag to true...that's why it reads a non existing row of the file..