libavcodec/qdm2.c:1256: error: Integer Overflow L2
  (32 - [0, 64]):unsigned32 by call to `qdm2_decode_sub_packet_header`.

libavcodec/qdm2.c:1255:5: Call
1253.     average_quantized_coeffs(q); // average elements in quantized_coeffs[max_ch][10][8]
1254. 
1255.     bitstream_init(&bc, q->compressed_data, q->compressed_size * 8);
          ^
1256.     qdm2_decode_sub_packet_header(&bc, &header);
1257. 

libavcodec/bitstream.h:85:9: Assignment
  83.         bc->buffer    =
  84.         bc->ptr       = NULL;
  85.         bc->bits_left = 0;
              ^
  86.         return AVERROR_INVALIDDATA;
  87.     }

libavcodec/qdm2.c:1256:5: Call
1254. 
1255.     bitstream_init(&bc, q->compressed_data, q->compressed_size * 8);
1256.     qdm2_decode_sub_packet_header(&bc, &header);
          ^
1257. 
1258.     if (header.type < 2 || header.type >= 8) {

libavcodec/qdm2.c:418:1: Parameter `bc->bits_left`
  416.  * @param sub_packet    packet under analysis
  417.  */
  418. static void qdm2_decode_sub_packet_header(BitstreamContext *bc,
       ^
  419.                                           QDM2SubPacket *sub_packet)
  420. {

libavcodec/qdm2.c:421:24: Call
  419.                                           QDM2SubPacket *sub_packet)
  420. {
  421.     sub_packet->type = bitstream_read(bc, 8);
                              ^
  422. 
  423.     if (sub_packet->type == 0) {

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, 64]):unsigned32 by call to `qdm2_decode_sub_packet_header` 
      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;
