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: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] - [1, 7]):unsigned32 by call to `bitstream_skip` 
    235.     bc->bits <<= n;
    236. #endif
    237.     bc->bits_left -= n;
             ^
    238. }
    239. 
