diff options
Diffstat (limited to 'newlib/libc/stdio/ftello.c')
| -rw-r--r-- | newlib/libc/stdio/ftello.c | 20 |
1 files changed, 13 insertions, 7 deletions
diff --git a/newlib/libc/stdio/ftello.c b/newlib/libc/stdio/ftello.c index 0a9bb7b..90c4d32 100644 --- a/newlib/libc/stdio/ftello.c +++ b/newlib/libc/stdio/ftello.c @@ -102,13 +102,19 @@ _DEFUN(_ftello_r, (ptr, fp), return (_off_t) -1; } - /* Find offset of underlying I/O object, then adjust for buffered - bytes. Flush a write stream, since the offset may be altered if - the stream is appending. Do not flush a read stream, since we - must not lose the ungetc buffer. */ - if (fp->_flags & __SWR) - _fflush_r (ptr, fp); - if (fp->_flags & __SOFF) + /* Find offset of underlying I/O object, then adjust for buffered bytes. */ + if (!(fp->_flags & __SRD) && (fp->_flags & __SWR) && + fp->_p != NULL && fp->_p - fp->_bf._base > 0 && + (fp->_flags & __SAPP)) + { + pos = fp->_seek (ptr, fp->_cookie, (_fpos_t) 0, SEEK_END); + if (pos == (_fpos_t) -1) + { + _newlib_flockfile_exit (fp); + return (_off_t) -1; + } + } + else if (fp->_flags & __SOFF) pos = fp->_offset; else { |