libavcodec/takdec.c:535: error: Integer Overflow L2
  ([1, +oo] - 6):unsigned32 by call to `bitstream_read`.

libavcodec/takdec.c:535:32: Call
533.         prev = 0;
534.         for (; i < nb_subframes - 1; i++) {
535.             int subframe_end = bitstream_read(bc, 6) * s->subframe_scale;
                                    ^
536.             if (subframe_end <= prev)
537.                 return AVERROR_INVALIDDATA;

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] - 6):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 int decode_channel(TAKDecContext *s, int chan)\n{\n    AVCodecContext *avctx = s->avctx;\n    BitstreamContext *bc  = &s->bc;\n    int32_t *decoded      = s->decoded[chan];\n    int left              = s->nb_samples - 1;\n    int i, prev, ret, nb_subframes;\n    int subframe_len[MAX_SUBFRAMES];\n    s->sample_shift[chan] = bits_esc4(bc);\n    if (s->sample_shift[chan] >= avctx->bits_per_coded_sample)\n        return AVERROR_INVALIDDATA;\n    *decoded++        = bitstream_read_signed(bc,\n                                              avctx->bits_per_coded_sample -\n                                              s->sample_shift[chan]);\n    s->lpc_mode[chan] = bitstream_read(bc, 2);\n    nb_subframes      = bitstream_read(bc, 3) + 1;\n    i = 0;\n    if (nb_subframes > 1) {\n        if (bitstream_bits_left(bc) < (nb_subframes - 1) * 6)\n            return AVERROR_INVALIDDATA;\n        prev = 0;\n        for (; i < nb_subframes - 1; i++) {\n            int subframe_end = bitstream_read(bc, 6) * s->subframe_scale;\n            if (subframe_end <= prev)\n                return AVERROR_INVALIDDATA;\n            subframe_len[i] = subframe_end - prev;\n            left           -= subframe_len[i];\n            prev            = subframe_end;\n        }\n        if (left <= 0)\n            return AVERROR_INVALIDDATA;\n    }\n    subframe_len[i] = left;\n    prev = 0;\n    for (i = 0; i < nb_subframes; i++) {\n        if ((ret = decode_subframe(s, decoded, subframe_len[i], prev)) < 0)\n            return ret;\n        decoded += subframe_len[i];\n        prev     = subframe_len[i];\n    }\n    return 0;\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}']