libavcodec/exr.c:391: error: Integer Overflow L2
  ([1, +oo] - 8):unsigned32 by call to `bitstream_read`.

libavcodec/exr.c:391:25: Call
389. 
390.         if (l == LONG_ZEROCODE_RUN) {
391.             int zerun = bitstream_read(&bc, 8) + SHORTEST_LONG_RUN;
                             ^
392. 
393.             if (im + zerun > iM + 1)

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] - 8):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 huf_unpack_enc_table(GetByteContext *gb,\n                                int32_t im, int32_t iM, uint64_t *hcode)\n{\n    BitstreamContext bc;\n    int ret = bitstream_init8(&bc, gb->buffer, bytestream2_get_bytes_left(gb));\n    if (ret < 0)\n        return ret;\n    for (; im <= iM; im++) {\n        uint64_t l = hcode[im] = bitstream_read(&bc, 6);\n        if (l == LONG_ZEROCODE_RUN) {\n            int zerun = bitstream_read(&bc, 8) + SHORTEST_LONG_RUN;\n            if (im + zerun > iM + 1)\n                return AVERROR_INVALIDDATA;\n            while (zerun--)\n                hcode[im++] = 0;\n            im--;\n        } else if (l >= SHORT_ZEROCODE_RUN) {\n            int zerun = l - SHORT_ZEROCODE_RUN + 2;\n            if (im + zerun > iM + 1)\n                return AVERROR_INVALIDDATA;\n            while (zerun--)\n                hcode[im++] = 0;\n            im--;\n        }\n    }\n    bytestream2_skip(gb, (bitstream_tell(&bc) + 7) / 8);\n    huf_canonical_code_table(hcode);\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}']