Xi Wang ca6c3f2c53 lzo: fix overflow checking in copy_backptr()
The check `src > dst' in the form `&c->out[-back] > c->out' invokes
pointer overflow, which is undefined behavior in C.

Remove the check.  Also replace `&c->out[-back] < c->out_start' with
a safe form `c->out - c->out_start < back' to avoid overflow.

CC: libav-stable@libav.org

Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>
2013-03-15 12:52:31 +01:00
2013-03-08 14:14:17 +01:00
2011-03-16 21:54:39 +01:00
2011-04-07 02:54:12 +02:00
2013-01-06 16:23:12 +01:00

Libav README
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