libavcodec/wmv2.c:70: error: Buffer Overrun L1
  Offset: [61, 64] (⇐ [5, 8] + 56) Size: 6 by call to `wmv2_add_block`.

libavcodec/wmv2.c:70:5: Call
68. 
69.     wmv2_add_block(w, block1[4], dest_cb                   , s->uvlinesize, 4);
70.     wmv2_add_block(w, block1[5], dest_cr                   , s->uvlinesize, 5);
        ^
71. }
72. 

libavcodec/wmv2.c:35:1: Parameter `n`
  33. }
  34. 
  35. static void wmv2_add_block(Wmv2Context *w, DCTELEM *block1, uint8_t *dst, int stride, int n){
      ^
  36.     MpegEncContext * const s= &w->s;
  37. 

libavcodec/wmv2.c:50:9: Call
  48.     case 2:
  49.         ff_simple_idct48_add(dst           , stride, block1);
  50.         ff_simple_idct48_add(dst + 4       , stride, w->abt_block2[n]);
              ^
  51.         s->dsp.clear_block(w->abt_block2[n]);
  52.         break;

libavcodec/simple_idct.c:195:1: Parameter `*block`
    193. }
    194. 
    195. void ff_simple_idct48_add(uint8_t *dest, int line_size, DCTELEM *block)
         ^
    196. {
    197.     int i;

libavcodec/simple_idct.c:206:9: Call
    204.     /* IDCT8 and store */
    205.     for(i=0; i<4; i++){
    206.         idctSparseColAdd_8(dest + i, line_size, block + i);
                 ^
    207.     }
    208. }

libavcodec/simple_idct_template.c:238:1: <Length trace>
236. }
237. 
238. static inline void FUNC(idctSparseColAdd)(pixel *dest, int line_size,
     ^
239.                                           DCTELEM *col)
240. {

libavcodec/simple_idct_template.c:238:1: Parameter `*col`
      236. }
      237. 
      238. static inline void FUNC(idctSparseColAdd)(pixel *dest, int line_size,
           ^
      239.                                           DCTELEM *col)
      240. {

libavcodec/simple_idct_template.c:244:5: Array access: Offset: [61, 64] (⇐ [5, 8] + 56) Size: 6 by call to `wmv2_add_block` 
      242.     INIT_CLIP;
      243. 
      244.     IDCT_COLS;
               ^
      245. 
      246.     dest[0] = CLIP(dest[0] + ((a0 + b0) >> COL_SHIFT));
