libavcodec/cavsdec.c:659: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32 by call to `bitstream_read_bit`.

libavcodec/cavsdec.c:638:1: Parameter `h->bc.bits_left`
636. }
637. 
638. static int decode_mb_i(AVSContext *h, int cbp_code)
     ^
639. {
640.     BitstreamContext *bc = &h->bc;

libavcodec/cavsdec.c:659:14: Call
657.         if (predpred == NOT_AVAIL) // if either is not available
658.             predpred = INTRA_L_LP;
659.         if (!bitstream_read_bit(bc)) {
                  ^
660.             int rem_mode = bitstream_read(bc, 2);
661.             predpred     = rem_mode + (rem_mode >= predpred);

libavcodec/bitstream.h:145:1: Parameter `bc->bits_left`
  143. 
  144. /* Return one bit from the buffer. */
  145. static inline unsigned bitstream_read_bit(BitstreamContext *bc)
       ^
  146. {
  147.     if (!bc->bits_left)

libavcodec/bitstream.h:150:12: Call
  148.         refill_64(bc);
  149. 
  150.     return get_val(bc, 1);
                  ^
  151. }
  152. 

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: ([0, +oo] - 1):unsigned32 by call to `bitstream_read_bit` 
    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_mb_i(AVSContext *h, int cbp_code)\n{\n    BitstreamContext *bc = &h->bc;\n    unsigned pred_mode_uv;\n    int block;\n    uint8_t top[18];\n    uint8_t *left = NULL;\n    uint8_t *d;\n    ff_cavs_init_mb(h);\n    for (block = 0; block < 4; block++) {\n        int nA, nB, predpred;\n        int pos = scan3x3[block];\n        nA = h->pred_mode_Y[pos - 1];\n        nB = h->pred_mode_Y[pos - 3];\n        predpred = FFMIN(nA, nB);\n        if (predpred == NOT_AVAIL)\n            predpred = INTRA_L_LP;\n        if (!bitstream_read_bit(bc)) {\n            int rem_mode = bitstream_read(bc, 2);\n            predpred     = rem_mode + (rem_mode >= predpred);\n        }\n        h->pred_mode_Y[pos] = predpred;\n    }\n    pred_mode_uv = get_ue_golomb(bc);\n    if (pred_mode_uv > 6) {\n        av_log(h->avctx, AV_LOG_ERROR, "illegal intra chroma pred mode\\n");\n        return AVERROR_INVALIDDATA;\n    }\n    ff_cavs_modify_mb_i(h, &pred_mode_uv);\n    if (h->cur.f->pict_type == AV_PICTURE_TYPE_I)\n        cbp_code = get_ue_golomb(bc);\n    if (cbp_code > 63 || cbp_code < 0) {\n        av_log(h->avctx, AV_LOG_ERROR, "illegal intra cbp\\n");\n        return AVERROR_INVALIDDATA;\n    }\n    h->cbp = cbp_tab[cbp_code][0];\n    if (h->cbp && !h->qp_fixed)\n        h->qp = (h->qp + get_se_golomb(bc)) & 63;\n    for (block = 0; block < 4; block++) {\n        d = h->cy + h->luma_scan[block];\n        ff_cavs_load_intra_pred_luma(h, top, &left, block);\n        h->intra_pred_l[h->pred_mode_Y[scan3x3[block]]]\n            (d, top, left, h->l_stride);\n        if (h->cbp & (1<<block))\n            decode_residual_block(h, bc, intra_dec, 1, h->qp, d, h->l_stride);\n    }\n    ff_cavs_load_intra_pred_chroma(h);\n    h->intra_pred_c[pred_mode_uv](h->cu, &h->top_border_u[h->mbx * 10],\n                                  h->left_border_u, h->c_stride);\n    h->intra_pred_c[pred_mode_uv](h->cv, &h->top_border_v[h->mbx * 10],\n                                  h->left_border_v, h->c_stride);\n    decode_residual_chroma(h);\n    ff_cavs_filter(h, I_8X8);\n    set_mv_intra(h);\n    return 0;\n}', 'static inline unsigned bitstream_read_bit(BitstreamContext *bc)\n{\n    if (!bc->bits_left)\n        refill_64(bc);\n    return get_val(bc, 1);\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}']