libavcodec/mpc7.c:193: error: Integer Overflow L2
  (32 - [0, `bc->bits_left` + 95]):unsigned32 by call to `bitstream_read`.

libavcodec/mpc7.c:189:1: Parameter `bc->bits_left`
187. }
188. 
189. static int get_scale_idx(BitstreamContext *bc, int ref)
     ^
190. {
191.     int t = bitstream_read_vlc(bc, dscf_vlc.table, MPC7_DSCF_BITS, 1) - 7;

libavcodec/mpc7.c:191:13: Call
189. static int get_scale_idx(BitstreamContext *bc, int ref)
190. {
191.     int t = bitstream_read_vlc(bc, dscf_vlc.table, MPC7_DSCF_BITS, 1) - 7;
                 ^
192.     if (t == 8)
193.         return bitstream_read(bc, 6);

libavcodec/bitstream.h:313:1: Parameter `(*table)[*]`
  311.  * If the VLC code is invalid and max_depth > 1, then the number of bits removed
  312.  * is undefined. */
  313. static inline int bitstream_read_vlc(BitstreamContext *bc, VLC_TYPE (*table)[2],
       ^
  314.                                      int bits, int max_depth)
  315. {

libavcodec/bitstream.h:319:5: Assignment
  317.     unsigned idx = bitstream_peek(bc, bits);
  318.     int code = table[idx][0];
  319.     int n    = table[idx][1];
           ^
  320. 
  321.     if (max_depth > 1 && n < 0) {

libavcodec/bitstream.h:329:5: Call
  327.         }
  328.     }
  329.     skip_remaining(bc, n);
           ^
  330. 
  331.     return code;

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: Assignment
    235.     bc->bits <<= n;
    236. #endif
    237.     bc->bits_left -= n;
             ^
    238. }
    239. 

libavcodec/mpc7.c:193:16: Call
191.     int t = bitstream_read_vlc(bc, dscf_vlc.table, MPC7_DSCF_BITS, 1) - 7;
192.     if (t == 8)
193.         return bitstream_read(bc, 6);
                    ^
194.     return av_clip_uintp2(ref + t, 7);
195. }

libavcodec/bitstream.h:183:1: Parameter `n`
  181. 
  182. /* Return n bits from the buffer. n has to be in the 0-32 range. */
  183. static inline uint32_t bitstream_read(BitstreamContext *bc, unsigned n)
       ^
  184. {
  185.     if (!n)

libavcodec/bitstream.h:189:9: Call
  187. 
  188.     if (n > bc->bits_left) {
  189.         refill_32(bc);
               ^
  190.         if (bc->bits_left < 32)
  191.             bc->bits_left = n;

libavcodec/bitstream.h:60:1: <RHS trace>
58. }
59. 
60. static inline void refill_32(BitstreamContext *bc)
    ^
61. {
62.     if (bc->ptr >= bc->buffer_end)

libavcodec/bitstream.h:60:1: Parameter `bc->bits_left`
    58. }
    59. 
    60. static inline void refill_32(BitstreamContext *bc)
        ^
    61. {
    62.     if (bc->ptr >= bc->buffer_end)

libavcodec/bitstream.h:68:5: Binary operation: (32 - [0, bc->bits_left + 95]):unsigned32 by call to `bitstream_read` 
    66.     bc->bits       = (uint64_t)AV_RL32(bc->ptr) << bc->bits_left | bc->bits;
    67. #else
    68.     bc->bits       = bc->bits | (uint64_t)AV_RB32(bc->ptr) << (32 - bc->bits_left);
            ^
    69. #endif
    70.     bc->ptr       += 4;
