libavcodec/wmv2.c:88: error: Buffer Overrun L1
  Offset: [61, 64] (⇐ [5, 8] + 56) Size: 6 by call to `wmv2_add_block`.

libavcodec/wmv2.c:88:5: Call
86. 
87.     wmv2_add_block(w, block1[4], dest_cb                   , s->uvlinesize, 4);
88.     wmv2_add_block(w, block1[5], dest_cr                   , s->uvlinesize, 5);
        ^
89. }
90. 

libavcodec/wmv2.c:53:1: Parameter `n`
  51. }
  52. 
  53. static void wmv2_add_block(Wmv2Context *w, int16_t *block1, uint8_t *dst, int stride, int n){
      ^
  54.     MpegEncContext * const s= &w->s;
  55. 

libavcodec/wmv2.c:68:9: Call
  66.     case 2:
  67.         ff_simple_idct48_add(dst           , stride, block1);
  68.         ff_simple_idct48_add(dst + 4       , stride, w->abt_block2[n]);
              ^
  69.         s->bdsp.clear_block(w->abt_block2[n]);
  70.         break;

libavcodec/simple_idct.c:191:1: Parameter `*block`
    189. }
    190. 
    191. void ff_simple_idct48_add(uint8_t *dest, int line_size, int16_t *block)
         ^
    192. {
    193.     int i;

libavcodec/simple_idct.c:202:9: Call
    200.     /* IDCT8 and store */
    201.     for(i=0; i<4; i++){
    202.         idctSparseColAdd_8(dest + i, line_size, block + i);
                 ^
    203.     }
    204. }

libavcodec/simple_idct_template.c:249:1: <Length trace>
247. }
248. 
249. static inline void FUNC(idctSparseColAdd)(pixel *dest, int line_size,
     ^
250.                                           int16_t *col)
251. {

libavcodec/simple_idct_template.c:249:1: Parameter `*col`
      247. }
      248. 
      249. static inline void FUNC(idctSparseColAdd)(pixel *dest, int line_size,
           ^
      250.                                           int16_t *col)
      251. {

libavcodec/simple_idct_template.c:254:5: Array access: Offset: [61, 64] (⇐ [5, 8] + 56) Size: 6 by call to `wmv2_add_block` 
      252.     int a0, a1, a2, a3, b0, b1, b2, b3;
      253. 
      254.     IDCT_COLS;
               ^
      255. 
      256.     dest[0] = av_clip_pixel(dest[0] + ((a0 + b0) >> COL_SHIFT));
