[FFmpeg-cvslog] avcodec/dirac_dwt: initialize support value for fidelity wavelet

[Michael Niedermayer]

ffmpeg | branch: master | Michael Niedermayer <michaelni at gmx.at> | Wed Dec 18 15:49:20 2013 +0100| [1935173fd1decb494300bf96b507419aae2b116a] | committer: Michael Niedermayer

avcodec/dirac_dwt: initialize support value for fidelity wavelet

Avoids use of uninitialized memory
Fixes: msan_uninit-mem_7f15e1988a6e_2748_RL_420p_ffdirac.drc
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=1935173fd1decb494300bf96b507419aae2b116a
---

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

diff --git a/libavcodec/dirac_dwt.c b/libavcodec/dirac_dwt.c
index bbd8ec7..51a924b 100644
--- a/libavcodec/dirac_dwt.c
+++ b/libavcodec/dirac_dwt.c
@@ -535,6 +535,7 @@ int ff_spatial_idwt_init2(DWTContext *d, IDWTELEM *buffer, int width, int height
         d->vertical_compose_l0 = (void*)vertical_compose_fidelityiL0;
         d->vertical_compose_h0 = (void*)vertical_compose_fidelityiH0;
         d->horizontal_compose = horizontal_compose_fidelityi;
+        d->support = 0; // not really used
         break;
     case DWT_DIRAC_DAUB9_7:
         d->spatial_compose = spatial_compose_daub97i_dy;