[FFmpeg-cvslog] avcodec/hevcpred_template: also initialize top[-1] for constrained intra prediction

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Sun Mar  2 21:17:48 2014 +0100| [dfefc9097e9b4bb20442e65454a40043bd189b3d] | committer: Michael Niedermayer

avcodec/hevcpred_template: also initialize top[-1] for constrained intra prediction

Fixes out of array read
Fixes: 387713a12dc5cfa27fcb4178084ce1ea-asan_stack-oob_131176a_1182_cov_3861068719_CAINIT_C_SHARP_3.bit
Found-by: Mateusz "j00ru" Jurczyk and Gynvael Coldwind
Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=dfefc9097e9b4bb20442e65454a40043bd189b3d
---

 libavcodec/hevcpred_template.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/hevcpred_template.c b/libavcodec/hevcpred_template.c
index 5ba9591..1d83249 100644
--- a/libavcodec/hevcpred_template.c
+++ b/libavcodec/hevcpred_template.c
@@ -155,6 +155,7 @@ static void FUNC(intra_pred)(HEVCContext *s, int x0, int y0, int log2_size, int
             left[i] = 128;
             top[i]  = 128;
         }
+        top[-1] = 128;
     }
     if (cand_bottom_left) {
         for (i = size + bottom_left_size; i < (size << 1); i++)