libavcodec/wmv2.c:95: error: Buffer Overrun L1
  Offset: [29, 36] (⇐ [5, 12] + 24) Size: 6 by call to `wmv2_add_block`.

libavcodec/wmv2.c:95:5: Call
93. 
94.     wmv2_add_block(w, block1[4], dest_cb, s->uvlinesize, 4);
95.     wmv2_add_block(w, block1[5], dest_cr, s->uvlinesize, 5);
        ^
96. }
97. 

libavcodec/wmv2.c:55:1: Parameter `n`
  53. }
  54. 
  55. static void wmv2_add_block(Wmv2Context *w, int16_t *block1,
      ^
  56.                            uint8_t *dst, int stride, int n)
  57. {

libavcodec/wmv2.c:67:13: Call
  65.         case 1:
  66.             ff_simple_idct84_add(dst, stride, block1);
  67.             ff_simple_idct84_add(dst + 4 * stride, stride, w->abt_block2[n]);
                  ^
  68.             s->bdsp.clear_block(w->abt_block2[n]);
  69.             break;

libavcodec/simple_idct.c:176:1: Parameter `*block`
    174. }
    175. 
    176. void ff_simple_idct84_add(uint8_t *dest, int line_size, int16_t *block)
         ^
    177. {
    178.     int i;

libavcodec/simple_idct.c:187:9: Call
    185.     /* IDCT4 and store */
    186.     for(i=0;i<8;i++) {
    187.         idct4col_add(dest + i, line_size, block + i);
                 ^
    188.     }
    189. }

libavcodec/simple_idct.c:131:1: <Length trace>
129. #define C3 C_FIX(0.5)
130. #define C_SHIFT (4+1+12)
131. static inline void idct4col_add(uint8_t *dest, int line_size, const int16_t *col)
     ^
132. {
133.     int c0, c1, c2, c3, a0, a1, a2, a3;

libavcodec/simple_idct.c:131:1: Parameter `*col`
      129. #define C3 C_FIX(0.5)
      130. #define C_SHIFT (4+1+12)
      131. static inline void idct4col_add(uint8_t *dest, int line_size, const int16_t *col)
           ^
      132. {
      133.     int c0, c1, c2, c3, a0, a1, a2, a3;

libavcodec/simple_idct.c:138:10: Array access: Offset: [29, 36] (⇐ [5, 12] + 24) Size: 6 by call to `wmv2_add_block` 
      136.     a1 = col[8*1];
      137.     a2 = col[8*2];
      138.     a3 = col[8*3];
                    ^
      139.     c0 = (a0 + a2)*C3 + (1 << (C_SHIFT - 1));
      140.     c2 = (a0 - a2)*C3 + (1 << (C_SHIFT - 1));
