libavcodec/wmv2.c:79: error: Buffer Overrun L2
  Offset: [5, 29] (⇐ [1, 25] + 4) Size: 6 by call to `wmv2_add_block`.

libavcodec/wmv2.c:79:5: Call
77. 
78.     wmv2_add_block(w, block1[0], dest_y                    , s->linesize, 0);
79.     wmv2_add_block(w, block1[1], dest_y + 8                , s->linesize, 1);
        ^
80.     wmv2_add_block(w, block1[2], dest_y +     8*s->linesize, s->linesize, 2);
81.     wmv2_add_block(w, block1[3], dest_y + 8 + 8*s->linesize, s->linesize, 3);

libavcodec/wmv2.c:51:1: Parameter `n`
  49. }
  50. 
  51. static void wmv2_add_block(Wmv2Context *w, int16_t *block1, uint8_t *dst, int stride, int n){
      ^
  52.     MpegEncContext * const s= &w->s;
  53. 

libavcodec/wmv2.c:61:9: Call
  59.     case 1:
  60.         ff_simple_idct84_add(dst           , stride, block1);
  61.         ff_simple_idct84_add(dst + 4*stride, stride, w->abt_block2[n]);
              ^
  62.         s->dsp.clear_block(w->abt_block2[n]);
  63.         break;

libavcodec/simple_idct.c:177:1: Parameter `*block`
    175. }
    176. 
    177. void ff_simple_idct84_add(uint8_t *dest, int line_size, int16_t *block)
         ^
    178. {
    179.     int i;

libavcodec/simple_idct.c:183:9: Call
    181.     /* IDCT8 on each line */
    182.     for(i=0; i<4; i++) {
    183.         idctRowCondDC_8(block + i*8, 0);
                 ^
    184.     }
    185. 

libavcodec/simple_idct_template.c:88:1: <Length trace>
86. #endif
87. 
88. static inline void FUNC(idctRowCondDC)(int16_t *row, int extra_shift)
    ^
89. {
90.     int a0, a1, a2, a3, b0, b1, b2, b3;

libavcodec/simple_idct_template.c:88:1: Parameter `*row`
      86. #endif
      87. 
      88. static inline void FUNC(idctRowCondDC)(int16_t *row, int extra_shift)
          ^
      89. {
      90.     int a0, a1, a2, a3, b0, b1, b2, b3;

libavcodec/simple_idct_template.c:145:20: Array access: Offset: [5, 29] (⇐ [1, 25] + 4) Size: 6 by call to `wmv2_add_block` 
      143. 
      144.     if (AV_RN64A(row + 4)) {
      145.         a0 +=   W4*row[4] + W6*row[6];
                              ^
      146.         a1 += - W4*row[4] - W2*row[6];
      147.         a2 += - W4*row[4] + W2*row[6];
