libavcodec/wmv2.c:89: error: Buffer Overrun L2
  Offset: [5, 29] (⇐ [1, 25] + 4) Size: 6 by call to `wmv2_add_block`.

libavcodec/wmv2.c:89:5: Call
87. 
88.     wmv2_add_block(w, block1[0], dest_y,                       s->linesize, 0);
89.     wmv2_add_block(w, block1[1], dest_y + 8,                   s->linesize, 1);
        ^
90.     wmv2_add_block(w, block1[2], dest_y + 8 * s->linesize,     s->linesize, 2);
91.     wmv2_add_block(w, block1[3], dest_y + 8 + 8 * s->linesize, s->linesize, 3);

libavcodec/wmv2.c:57:1: Parameter `n`
  55. }
  56. 
  57. static void wmv2_add_block(Wmv2Context *w, int16_t *block1,
      ^
  58.                            uint8_t *dst, int stride, int n)
  59. {

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

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

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

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