libavcodec/wmavoice.c:1971: error: Integer Overflow L2
  ([0, +oo] - 4):unsigned32 by call to `parse_packet_header`.

libavcodec/wmavoice.c:1965:5: Call
1963.         return 0;
1964.     }
1965.     bitstream_init8(&s->bc, avpkt->data, size);
          ^
1966. 
1967.     /* size == ctx->block_align is used to indicate whether we are dealing with

libavcodec/bitstream.h:104:1: Parameter `bc->bits_left`
  102. 
  103. /* Initialize BitstreamContext with buffer size in bytes instead of bits. */
  104. static inline int bitstream_init8(BitstreamContext *bc, const uint8_t *buffer,
       ^
  105.                                   unsigned byte_size)
  106. {

libavcodec/wmavoice.c:1971:20: Call
1969.      * previously. */
1970.     if (size == ctx->block_align) { // new packet header
1971.         if ((res = parse_packet_header(s)) < 0)
                         ^
1972.             return res;
1973. 

libavcodec/wmavoice.c:1884:1: Parameter `s->bc.bits_left`
  1882.  * @return 1 if not enough bits were available, or 0 on success.
  1883.  */
  1884. static int parse_packet_header(WMAVoiceContext *s)
        ^
  1885. {
  1886.     BitstreamContext *bc = &s->bc;

libavcodec/wmavoice.c:1891:5: Call
  1889.     if (bitstream_bits_left(bc) < 11)
  1890.         return 1;
  1891.     bitstream_skip(bc, 4);      // packet sequence number
            ^
  1892.     s->has_residual_lsps = bitstream_read_bit(bc);
  1893.     do {

libavcodec/bitstream.h:241:1: Parameter `n`
    239. 
    240. /* Skip n bits in the buffer. */
    241. static inline void bitstream_skip(BitstreamContext *bc, unsigned n)
         ^
    242. {
    243.     if (n <= bc->bits_left)

libavcodec/bitstream.h:244:9: Call
    242. {
    243.     if (n <= bc->bits_left)
    244.         skip_remaining(bc, n);
                 ^
    245.     else {
    246.         n -= bc->bits_left;

libavcodec/bitstream.h:230:1: <LHS trace>
228. }
229. 
230. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
     ^
231. {
232. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:230:1: Parameter `bc->bits_left`
      228. }
      229. 
      230. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
           ^
      231. {
      232. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:230:1: <RHS trace>
228. }
229. 
230. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
     ^
231. {
232. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:230:1: Parameter `n`
      228. }
      229. 
      230. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
           ^
      231. {
      232. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:237:5: Binary operation: ([0, +oo] - 4):unsigned32 by call to `parse_packet_header` 
      235.     bc->bits <<= n;
      236. #endif
      237.     bc->bits_left -= n;
               ^
      238. }
      239. 
