libavcodec/mpc8.c:363: error: Integer Overflow L2
  ([0, 2] - 1):unsigned32.

libavcodec/mpc8.c:363:66: <LHS trace>
361.                     t = mpc8_get_mask(gb, 18, cnt);
362.                     for(k = 0; k < SAMPLES_PER_BAND / 2; k++, t <<= 1)
363.                         c->Q[ch][off + j + k] = (t & 0x20000) ? (get_bits1(gb) << 1) - 1 : 0;
                                                                      ^
364.                 }
365.                 break;

libavcodec/mpc8.c:363:66: Call
361.                     t = mpc8_get_mask(gb, 18, cnt);
362.                     for(k = 0; k < SAMPLES_PER_BAND / 2; k++, t <<= 1)
363.                         c->Q[ch][off + j + k] = (t & 0x20000) ? (get_bits1(gb) << 1) - 1 : 0;
                                                                      ^
364.                 }
365.                 break;

libavcodec/get_bits.h:230:1: Parameter `s->index`
  228. }
  229. 
  230. static inline unsigned int get_bits1(GetBitContext *s){
       ^
  231.     unsigned int index = s->index;
  232.     uint8_t result = s->buffer[index>>3];

libavcodec/get_bits.h:231:5: Assignment
  229. 
  230. static inline unsigned int get_bits1(GetBitContext *s){
  231.     unsigned int index = s->index;
           ^
  232.     uint8_t result = s->buffer[index>>3];
  233. #ifdef ALT_BITSTREAM_READER_LE

libavcodec/get_bits.h:234:5: Assignment
  232.     uint8_t result = s->buffer[index>>3];
  233. #ifdef ALT_BITSTREAM_READER_LE
  234.     result >>= index & 7;
           ^
  235.     result &= 1;
  236. #else

libavcodec/get_bits.h:235:5: Assignment
  233. #ifdef ALT_BITSTREAM_READER_LE
  234.     result >>= index & 7;
  235.     result &= 1;
           ^
  236. #else
  237.     result <<= index & 7;

libavcodec/get_bits.h:243:5: Assignment
  241.     s->index = index;
  242. 
  243.     return result;
           ^
  244. }
  245. 

libavcodec/mpc8.c:363:49: Binary operation: ([0, 2] - 1):unsigned32
361.                     t = mpc8_get_mask(gb, 18, cnt);
362.                     for(k = 0; k < SAMPLES_PER_BAND / 2; k++, t <<= 1)
363.                         c->Q[ch][off + j + k] = (t & 0x20000) ? (get_bits1(gb) << 1) - 1 : 0;
                                                     ^
364.                 }
365.                 break;
