From 40a982a9e1b825b175be7bc7c7199c6bdf363e4b Mon Sep 17 00:00:00 2001 From: Ulrich Drepper Date: Thu, 9 Aug 2001 08:50:50 +0000 Subject: Update. 2001-08-09 Ulrich Drepper * libio/wfileops.c (_IO_wfile_seekoff): Don't even try to handle seeking with backup buffer present. Correct determining of internal buffer position. Reset also wide buffers if we reset the internal buffers. * libio/iofwide.c (_IO_fwide): Always determine file offset for wide streams. * libio/ioseekoff.c: Catch one unimplemented case. * libio/ftello.c: Don't abort if the wide stream has backup buffer. * libio/ftello64.c: Likewise. * libio/iofgetpos.c: Likewise. * libio/iofgetpos64.c: Likewise. * libio/ftell.c: Likewise. * libio/Makefile (tests): Add tst-ungetwc2. * libio/tst-ungetwc2.c: New file. --- libio/ioseekoff.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'libio/ioseekoff.c') diff --git a/libio/ioseekoff.c b/libio/ioseekoff.c index 60249694c0..2111bec745 100644 --- a/libio/ioseekoff.c +++ b/libio/ioseekoff.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1993, 1997, 1998, 1999 Free Software Foundation, Inc. +/* Copyright (C) 1993, 1997, 1998, 1999, 2001 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -25,6 +25,7 @@ This exception applies to code released by its copyright holders in files containing the exception. */ +#include #include #include #ifndef errno @@ -58,7 +59,12 @@ _IO_seekoff (fp, offset, dir, mode) if (mode != 0 && _IO_have_backup (fp)) { if (dir == _IO_seek_cur && _IO_in_backup (fp)) - offset -= fp->_IO_read_end - fp->_IO_read_ptr; + { + if (fp->_vtable_offset != 0 || fp->_mode <= 0) + offset -= fp->_IO_read_end - fp->_IO_read_ptr; + else + abort (); + } _IO_free_backup_area (fp); } -- cgit 1.4.1