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-rw-r--r--libio/ftello.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libio/ftello.c b/libio/ftello.c
index 662b954c54..2d8a8a7167 100644
--- a/libio/ftello.c
+++ b/libio/ftello.c
@@ -37,6 +37,8 @@ ftello (fp)
_IO_cleanup_region_start ((void (*) __P ((void *))) _IO_funlockfile, fp);
_IO_flockfile (fp);
pos = _IO_seekoff (fp, 0, _IO_seek_cur, 0);
+ if (_IO_in_backup (fp))
+ pos -= fp->_IO_save_end - fp->_IO_save_base;
_IO_funlockfile (fp);
_IO_cleanup_region_end (0);
if (pos == _IO_pos_BAD)