libavcodec/imc.c:332: error: Integer Overflow L2
  ([1, +oo] - 7):unsigned32 by call to `bitstream_read`.

libavcodec/imc.c:332:25: Call
330.         start = 1;
331.     if (start)
332.         levlCoeffs[0] = bitstream_read(&q->bc, 7);
                             ^
333.     for (i = start; i < BANDS; i++) {
334.         levlCoeffs[i] = bitstream_read_vlc(&q->bc, hufftab[cb_sel[i]]->table,

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:194:12: Call
  192.     }
  193. 
  194.     return get_val(bc, n);
                  ^
  195. }
  196. 

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

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

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

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

libavcodec/bitstream.h:139:5: Binary operation: ([1, +oo] - 7):unsigned32 by call to `bitstream_read` 
    137.     bc->bits <<= n;
    138. #endif
    139.     bc->bits_left -= n;
             ^
    140. 
    141.     return ret;

static inline uint64_t get_val(BitstreamContext *bc, unsigned n)
{
#ifdef BITSTREAM_READER_LE
    uint64_t ret = bc->bits & ((UINT64_C(1) << n) - 1);
    bc->bits >>= n;
#else
    uint64_t ret = bc->bits >> (64 - n);
    bc->bits <<= n;
#endif
    bc->bits_left -= n;
    return ret;
}
['static void imc_read_level_coeffs(IMCContext *q, int stream_format_code,\n                                  int *levlCoeffs)\n{\n    int i;\n    VLC *hufftab[4];\n    int start = 0;\n    const uint8_t *cb_sel;\n    int s;\n    s = stream_format_code >> 1;\n    hufftab[0] = &huffman_vlc[s][0];\n    hufftab[1] = &huffman_vlc[s][1];\n    hufftab[2] = &huffman_vlc[s][2];\n    hufftab[3] = &huffman_vlc[s][3];\n    cb_sel = imc_cb_select[s];\n    if (stream_format_code & 4)\n        start = 1;\n    if (start)\n        levlCoeffs[0] = bitstream_read(&q->bc, 7);\n    for (i = start; i < BANDS; i++) {\n        levlCoeffs[i] = bitstream_read_vlc(&q->bc, hufftab[cb_sel[i]]->table,\n                                           hufftab[cb_sel[i]]->bits, 2);\n        if (levlCoeffs[i] == 17)\n            levlCoeffs[i] += bitstream_read(&q->bc, 4);\n    }\n}', 'static inline uint32_t bitstream_read(BitstreamContext *bc, unsigned n)\n{\n    if (!n)\n        return 0;\n    if (n > bc->bits_left) {\n        refill_32(bc);\n        if (bc->bits_left < 32)\n            bc->bits_left = n;\n    }\n    return get_val(bc, n);\n}', 'static inline uint64_t get_val(BitstreamContext *bc, unsigned n)\n{\n#ifdef BITSTREAM_READER_LE\n    uint64_t ret = bc->bits & ((UINT64_C(1) << n) - 1);\n    bc->bits >>= n;\n#else\n    uint64_t ret = bc->bits >> (64 - n);\n    bc->bits <<= n;\n#endif\n    bc->bits_left -= n;\n    return ret;\n}']