libavcodec/bink.c:482: error: Integer Overflow L2
  ([1, +oo] - 4):unsigned32 by call to `bitstream_read`.

libavcodec/bink.c:482:17: Call
480.         if (dst_end - dst < len2)
481.             return AVERROR_INVALIDDATA;
482.         bsize = bitstream_read(bc, 4);
                     ^
483.         if (bsize) {
484.             for (j = 0; j < len2; j++) {

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] - 4):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 read_dcs(AVCodecContext *avctx, BitstreamContext *bc, Bundle *b,\n                    int start_bits, int has_sign)\n{\n    int i, j, len, len2, bsize, v, v2;\n    int16_t *dst     = (int16_t*)b->cur_dec;\n    int16_t *dst_end = (int16_t*)b->data_end;\n    CHECK_READ_VAL(bc, b, len);\n    v = bitstream_read(bc, start_bits - has_sign);\n    if (v && has_sign) {\n        v = bitstream_apply_sign(bc, v);\n    }\n    if (dst_end - dst < 1)\n        return AVERROR_INVALIDDATA;\n    *dst++ = v;\n    len--;\n    for (i = 0; i < len; i += 8) {\n        len2 = FFMIN(len - i, 8);\n        if (dst_end - dst < len2)\n            return AVERROR_INVALIDDATA;\n        bsize = bitstream_read(bc, 4);\n        if (bsize) {\n            for (j = 0; j < len2; j++) {\n                v2 = bitstream_read(bc, bsize);\n                if (v2) {\n                    v2 = bitstream_apply_sign(bc, v2);\n                }\n                v += v2;\n                *dst++ = v;\n                if (v < -32768 || v > 32767) {\n                    av_log(avctx, AV_LOG_ERROR, "DC value went out of bounds: %d\\n", v);\n                    return AVERROR_INVALIDDATA;\n                }\n            }\n        } else {\n            for (j = 0; j < len2; j++)\n                *dst++ = v;\n        }\n    }\n    b->cur_dec = (uint8_t*)dst;\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}']