VP3: Prevent stack corruption from an unset custom coding method.

Originally committed as revision 16978 to svn://svn.ffmpeg.org/ffmpeg/trunk
16 years ago · 2c823b3ccc
parent 20e2a7aed2
commit 2c823b3ccc
1 changed files with 2 additions and 0 deletions
--- a/libavcodec/vp3.c
+++ b/libavcodec/vp3.c
@ -741,6 +741,8 @@ static int unpack_modes(Vp3DecodeContext *s, GetBitContext *gb)

        /* is it a custom coding scheme? */
        if (scheme == 0) {
+            for (i = 0; i < 8; i++)
+                custom_mode_alphabet[i] = MODE_INTER_NO_MV;
            for (i = 0; i < 8; i++)
                custom_mode_alphabet[get_bits(gb, 3)] = i;
        }