diff options
Diffstat (limited to 'libio/ioseekoff.c')
| -rw-r--r-- | libio/ioseekoff.c | 10 |
1 files changed, 8 insertions, 2 deletions
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 <stdlib.h> #include <libioP.h> #include <errno.h> #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); } |