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authorRoland McGrath <roland@gnu.org>2004-11-04 23:22:02 +0000
committerRoland McGrath <roland@gnu.org>2004-11-04 23:22:02 +0000
commit3447be7bb303c1cf4d10fd059babc9681df0123b (patch)
tree4390a65ae096f254db64de2e488cea5fd489c10b /libio/ioftell.c
parenta129c4fe7280cad19502bd220a3fe95497553cf5 (diff)
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2004-11-04 Jakub Jelinek <jakub@redhat.com>
	* libio/ftello.c (ftello): Don't subtract save_end - save_base
	if pos is _IO_pos_BAD.
	* libio/ftello64.c (ftello64): Likewise.
	* libio/iofgetpos.c (_IO_new_fgetpos): Likewise.
	* libio/iofgetpos64.c (_IO_new_fgetpos64): Likewise.
	* libio/oldiofgetpos.c (_IO_old_fgetpos): Likewise.
	* libio/oldiofgetpos64.c (_IO_old_fgetpos64): Likewise.
	* libio/ioftell.c (_IO_ftell): Likewise.
	Cast to long int instead of off_t when checking for overflow.
Diffstat (limited to 'libio/ioftell.c')
-rw-r--r--libio/ioftell.c7
1 files changed, 4 insertions, 3 deletions
diff --git a/libio/ioftell.c b/libio/ioftell.c
index b991ef69ea..03e5f28404 100644
--- a/libio/ioftell.c
+++ b/libio/ioftell.c
@@ -1,4 +1,5 @@
-/* Copyright (C) 1993,1995-2000,2001,2002,2003 Free Software Foundation, Inc.
+/* Copyright (C) 1993, 1995-2000, 2001, 2002, 2003, 2004
+   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
@@ -38,7 +39,7 @@ _IO_ftell (fp)
   CHECK_FILE (fp, -1L);
   _IO_acquire_lock (fp);
   pos = _IO_seekoff_unlocked (fp, 0, _IO_seek_cur, 0);
-  if (_IO_in_backup (fp))
+  if (_IO_in_backup (fp) && pos != _IO_pos_BAD)
     {
       if (_IO_vtable_offset (fp) != 0 || fp->_mode <= 0)
 	pos -= fp->_IO_save_end - fp->_IO_save_base;
@@ -52,7 +53,7 @@ _IO_ftell (fp)
 #endif
       return -1L;
     }
-  if ((_IO_off64_t) (off_t) pos != pos)
+  if ((_IO_off64_t) (long int) pos != pos)
     {
 #ifdef EOVERFLOW
       __set_errno (EOVERFLOW);