Merge commit 'ca6c3f2c53be70aa3c38e8f1292809db89ea1ba6'

* commit 'ca6c3f2c53be70aa3c38e8f1292809db89ea1ba6':
  lzo: fix overflow checking in copy_backptr()
  flacdec: simplify bounds checking in flac_probe()
  atrac3: avoid oversized shifting in decode_bytes()

Conflicts:
	libavformat/flacdec.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>

1 files changed, 1 insertions, 2 deletions

diff --git a/libavutil/lzo.c b/libavutil/lzo.c
index c723257212..221a66b9ab 100644
--- a/libavutil/lzo.c
+++ b/libavutil/lzo.c
@@ -110,9 +110,8 @@ static inline void copy(LZOContext *c, int cnt)
  */
 static inline void copy_backptr(LZOContext *c, int back, int cnt)
 {
-    register const uint8_t *src = &c->out[-back];
     register uint8_t *dst       = c->out;
-    if (src < c->out_start || src > dst) {
+    if (dst - c->out_start < back) {
         c->error |= AV_LZO_INVALID_BACKPTR;
         return;
     }