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libio: Attempt wide backup free only for non-legacy code

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_wide_data and _mode are not available in legacy code, so do not attempt
to free the wide backup buffer in legacy code.

Resolves: BZ #32137 and BZ #27821

Signed-off-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Reviewed-by: Florian Weimer <fweimer@redhat.com>
This commit is contained in:
Siddhesh Poyarekar 2024-09-03 14:58:33 -04:00
parent 64f62c47e9
commit ae4d44b1d5
1 changed files with 1 additions and 1 deletions
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libio/genops.c
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@ -819,7 +819,7 @@ _IO_unbuffer_all (void)
/* Free up the backup area if it was ever allocated. */ /* Free up the backup area if it was ever allocated. */
if (_IO_have_backup (fp)) if (_IO_have_backup (fp))
_IO_free_backup_area (fp); _IO_free_backup_area (fp);
if (fp->_mode > 0 && _IO_have_wbackup (fp)) if (!legacy && fp->_mode > 0 && _IO_have_wbackup (fp))
_IO_free_wbackup_area (fp); _IO_free_wbackup_area (fp);
if (! (fp->_flags & _IO_UNBUFFERED) if (! (fp->_flags & _IO_UNBUFFERED)