libavcodec/vp6.c:437: error: Buffer Overrun L1
  Offset: [5, +oo] (⇐ [0, +oo] + 5) Size: 2.

libavcodec/vp6.c:405:1: <Length trace>
403. }
404. 
405. static void vp6_parse_coeff(vp56_context_t *s)
     ^
406. {
407.     vp56_range_coder_t *c = s->ccp;

libavcodec/vp6.c:405:1: Parameter `s->modelp->coeff_dccv[*]`
403. }
404. 
405. static void vp6_parse_coeff(vp56_context_t *s)
     ^
406. {
407.     vp56_range_coder_t *c = s->ccp;

libavcodec/vp6.c:423:9: Assignment
421.         ctx = s->left_block[vp56_b6to4[b]].not_null_dc
422.               + s->above_blocks[s->above_block_idx[b]].not_null_dc;
423.         model1 = model->coeff_dccv[pt];
             ^
424.         model2 = model->coeff_dcct[pt][ctx];
425. 

libavcodec/vp6.c:437:62: Array access: Offset: [5, +oo] (⇐ [0, +oo] + 5) Size: 2
435.                     } else {
436.                         if (vp56_rac_get_prob(c, model2[4]))
437.                             coeff = 3 + vp56_rac_get_prob(c, model1[5]);
                                                                  ^
438.                         else
439.                             coeff = 2;
