libavcodec/wmadec.c:878: error: Integer Overflow L2
  ([0, +oo] - [1, 7]):unsigned32 by call to `bitstream_skip`.

libavcodec/wmadec.c:789:1: Parameter `avctx->block_align`
787. }
788. 
789. static int wma_decode_superframe(AVCodecContext *avctx, void *data,
     ^
790.                                  int *got_frame_ptr, AVPacket *avpkt)
791. {

libavcodec/wmadec.c:813:5: Assignment
811.         return AVERROR_INVALIDDATA;
812.     }
813.     buf_size = avctx->block_align;
         ^
814. 
815.     bitstream_init8(&s->bc, buf, buf_size);

libavcodec/wmadec.c:876:9: Assignment
874.             return AVERROR_INVALIDDATA;
875.         bitstream_init8(&s->bc, buf + (pos >> 3), buf_size - (pos >> 3));
876.         len = pos & 7;
             ^
877.         if (len > 0)
878.             bitstream_skip(&s->bc, len);

libavcodec/wmadec.c:878:13: Call
876.         len = pos & 7;
877.         if (len > 0)
878.             bitstream_skip(&s->bc, len);
                 ^
879. 
880.         s->reset_block_lengths = 1;

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] - [1, 7]):unsigned32 by call to `bitstream_skip` 
    234.     bc->bits <<= n;
    235. #endif
    236.     bc->bits_left -= n;
             ^
    237. }
    238. 
