libavcodec/mpc8.c:129: error: Integer Overflow L2
  (3 - [0, 64]):unsigned32 by call to `bitstream_skip`.

libavcodec/mpc8.c:127:5: Call
125.     ff_mpc_init();
126. 
127.     bitstream_init(&bc, avctx->extradata, 16);
         ^
128. 
129.     bitstream_skip(&bc, 3); // sample rate

libavcodec/bitstream.h:84:9: Assignment
  82.         bc->buffer    =
  83.         bc->ptr       = NULL;
  84.         bc->bits_left = 0;
              ^
  85.         return AVERROR_INVALIDDATA;
  86.     }

libavcodec/mpc8.c:129:5: Call
127.     bitstream_init(&bc, avctx->extradata, 16);
128. 
129.     bitstream_skip(&bc, 3); // sample rate
         ^
130.     c->maxbands = bitstream_read(&bc, 5) + 1;
131.     channels    = bitstream_read(&bc, 4) + 1;

libavcodec/bitstream.h:240:1: <LHS trace>
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: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:240:1: <RHS trace>
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: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:245:9: Binary operation: (3 - [0, 64]):unsigned32 by call to `bitstream_skip` 
  243.         skip_remaining(bc, n);
  244.     else {
  245.         n -= bc->bits_left;
               ^
  246.         bc->bits      = 0;
  247.         bc->bits_left = 0;
