libavcodec/wmalosslessdec.c:446: error: Integer Overflow L2
  ([1, +oo] - 3):unsigned32 by call to `bitstream_read`.

libavcodec/wmalosslessdec.c:446:27: Call
444. 
445.     for (c = 0; c < s->num_channels; c++) {
446.         s->cdlms_ttl[c] = bitstream_read(&s->bc, 3) + 1;
                               ^
447.         for (i = 0; i < s->cdlms_ttl[c]; i++) {
448.             s->cdlms[c][i].order = (bitstream_read(&s->bc, 7) + 1) * 8;

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] - 3):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_cdlms(WmallDecodeCtx *s)\n{\n    int c, i;\n    int cdlms_send_coef = bitstream_read_bit(&s->bc);\n    for (c = 0; c < s->num_channels; c++) {\n        s->cdlms_ttl[c] = bitstream_read(&s->bc, 3) + 1;\n        for (i = 0; i < s->cdlms_ttl[c]; i++) {\n            s->cdlms[c][i].order = (bitstream_read(&s->bc, 7) + 1) * 8;\n            if (s->cdlms[c][i].order > MAX_ORDER) {\n                av_log(s->avctx, AV_LOG_ERROR,\n                       "Order[%d][%d] %d > max (%d), not supported\\n",\n                       c, i, s->cdlms[c][i].order, MAX_ORDER);\n                s->cdlms[0][0].order = 0;\n                return AVERROR_INVALIDDATA;\n            }\n        }\n        for (i = 0; i < s->cdlms_ttl[c]; i++)\n            s->cdlms[c][i].scaling = bitstream_read(&s->bc, 4);\n        if (cdlms_send_coef) {\n            for (i = 0; i < s->cdlms_ttl[c]; i++) {\n                int cbits, shift_l, shift_r, j;\n                cbits = av_log2(s->cdlms[c][i].order);\n                if ((1 << cbits) < s->cdlms[c][i].order)\n                    cbits++;\n                s->cdlms[c][i].coefsend = bitstream_read(&s->bc, cbits) + 1;\n                cbits = av_log2(s->cdlms[c][i].scaling + 1);\n                if ((1 << cbits) < s->cdlms[c][i].scaling + 1)\n                    cbits++;\n                s->cdlms[c][i].bitsend = bitstream_read(&s->bc, cbits) + 2;\n                shift_l = 32 - s->cdlms[c][i].bitsend;\n                shift_r = 32 - s->cdlms[c][i].scaling - 2;\n                for (j = 0; j < s->cdlms[c][i].coefsend; j++)\n                    s->cdlms[c][i].coefs[j] =\n                        (bitstream_read(&s->bc, s->cdlms[c][i].bitsend) << shift_l) >> shift_r;\n            }\n        }\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}']