libavcodec/wmavoice.c:1972: error: Integer Overflow L2
  ([0, +oo] - 4):unsigned32 by call to `parse_packet_header`.

libavcodec/wmavoice.c:1966:5: Call
1964.         return 0;
1965.     }
1966.     bitstream_init8(&s->bc, avpkt->data, size);
          ^
1967. 
1968.     /* size == ctx->block_align is used to indicate whether we are dealing with

libavcodec/bitstream.h:103:1: Parameter `bc->bits_left`
  101. 
  102. /* Initialize BitstreamContext with buffer size in bytes instead of bits. */
  103. static inline int bitstream_init8(BitstreamContext *bc, const uint8_t *buffer,
       ^
  104.                                   unsigned byte_size)
  105. {

libavcodec/wmavoice.c:1972:20: Call
1970.      * previously. */
1971.     if (size == ctx->block_align) { // new packet header
1972.         if ((res = parse_packet_header(s)) < 0)
                         ^
1973.             return res;
1974. 

libavcodec/wmavoice.c:1885:1: Parameter `s->bc.bits_left`
  1883.  * @return 1 if not enough bits were available, or 0 on success.
  1884.  */
  1885. static int parse_packet_header(WMAVoiceContext *s)
        ^
  1886. {
  1887.     BitstreamContext *bc = &s->bc;

libavcodec/wmavoice.c:1892:5: Call
  1890.     if (bitstream_bits_left(bc) < 11)
  1891.         return 1;
  1892.     bitstream_skip(bc, 4);      // packet sequence number
            ^
  1893.     s->has_residual_lsps = bitstream_read_bit(bc);
  1894.     do {

libavcodec/bitstream.h:240:1: Parameter `n`
    238. 
    239. /* Skip n bits in the buffer. */
    240. static inline void bitstream_skip(BitstreamContext *bc, unsigned n)
         ^
    241. {
    242.     if (n < bc->bits_left)

libavcodec/bitstream.h:243:9: Call
    241. {
    242.     if (n < bc->bits_left)
    243.         skip_remaining(bc, n);
                 ^
    244.     else {
    245.         n -= bc->bits_left;

libavcodec/bitstream.h:229:1: <LHS trace>
227. }
228. 
229. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
     ^
230. {
231. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:229:1: Parameter `bc->bits_left`
      227. }
      228. 
      229. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
           ^
      230. {
      231. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:229:1: <RHS trace>
227. }
228. 
229. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
     ^
230. {
231. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:229:1: Parameter `n`
      227. }
      228. 
      229. static inline void skip_remaining(BitstreamContext *bc, unsigned n)
           ^
      230. {
      231. #ifdef BITSTREAM_READER_LE

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