libavcodec/mpc7.c:93: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32 by call to `bitstream_read_bit`.

libavcodec/mpc7.c:92:5: Call
90.         return -1;
91.     }
92.     bitstream_skip(&bc, 88);
        ^
93.     c->gapless      = bitstream_read_bit(&bc);
94.     c->lastframelen = bitstream_read(&bc, 11);

libavcodec/bitstream.h:247:9: Assignment
  245.         n -= bc->bits_left;
  246.         bc->bits      = 0;
  247.         bc->bits_left = 0;
               ^
  248. 
  249.         if (n >= 64) {

libavcodec/bitstream.h:255:9: Call
  253.             bc->ptr += skip;
  254.         }
  255.         refill_64(bc);
               ^
  256.         if (n)
  257.             skip_remaining(bc, n);

libavcodec/bitstream.h:45:1: Parameter `bc->bits_left`
    43. } BitstreamContext;
    44. 
    45. static inline void refill_64(BitstreamContext *bc)
        ^
    46. {
    47.     if (bc->ptr >= bc->buffer_end)

libavcodec/mpc7.c:93:23: Call
91.     }
92.     bitstream_skip(&bc, 88);
93.     c->gapless      = bitstream_read_bit(&bc);
                          ^
94.     c->lastframelen = bitstream_read(&bc, 11);
95.     av_log(avctx, AV_LOG_DEBUG, "IS: %d, MSS: %d, TG: %d, LFL: %d, bands: %d\n",

libavcodec/bitstream.h:144:1: Parameter `bc->bits_left`
  142. 
  143. /* Return one bit from the buffer. */
  144. static inline unsigned bitstream_read_bit(BitstreamContext *bc)
       ^
  145. {
  146.     if (!bc->bits_left)

libavcodec/bitstream.h:149:12: Call
  147.         refill_64(bc);
  148. 
  149.     return get_val(bc, 1);
                  ^
  150. }
  151. 

libavcodec/bitstream.h:129:1: <LHS trace>
127. }
128. 
129. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
     ^
130. {
131. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:129:1: Parameter `bc->bits_left`
    127. }
    128. 
    129. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
         ^
    130. {
    131. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:129:1: <RHS trace>
127. }
128. 
129. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
     ^
130. {
131. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:129:1: Parameter `n`
    127. }
    128. 
    129. static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
         ^
    130. {
    131. #ifdef BITSTREAM_READER_LE

libavcodec/bitstream.h:138:5: Binary operation: ([0, +oo] - 1):unsigned32 by call to `bitstream_read_bit` 
    136.     bc->bits <<= n;
    137. #endif
    138.     bc->bits_left -= n;
             ^
    139. 
    140.     return ret;
