libavcodec/wavpack.c:313: error: Integer Overflow L2
  (32 - [0, max(63, `bc->bits_left`)]):unsigned32 by call to `bitstream_read`.

libavcodec/wavpack.c:291:1: Parameter `bc->bits_left`
289. }
290. 
291. static int wv_get_value(WavpackFrameContext *ctx, BitstreamContext *bc,
     ^
292.                         int channel, int *last)
293. {

libavcodec/wavpack.c:309:17: Call
307.             }
308.         } else {
309.             t = get_unary_0_33(bc);
                     ^
310.             if (t >= 2) {
311.                 if (bitstream_bits_left(bc) < t - 1)

libavcodec/unary.h:47:1: Parameter `bc->bits_left`
  45.  * @return Unary length/index
  46.  */
  47. static inline int get_unary_0_33(BitstreamContext *bc)
      ^
  48. {
  49.     return get_unary(bc, 0, 33);

libavcodec/unary.h:49:12: Call
  47. static inline int get_unary_0_33(BitstreamContext *bc)
  48. {
  49.     return get_unary(bc, 0, 33);
                 ^
  50. }
  51. 

libavcodec/unary.h:33:1: Parameter `bc->bits_left`
    31.  * @return Unary length/index
    32.  */
    33. static inline int get_unary(BitstreamContext *bc, int stop, int len)
        ^
    34. {
    35.     int i;

libavcodec/wavpack.c:313:21: Call
311.                 if (bitstream_bits_left(bc) < t - 1)
312.                     goto error;
313.                 t = bitstream_read(bc, t - 1) | (1 << (t - 1));
                         ^
314.             } else {
315.                 if (bitstream_bits_left(bc) < 0)

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:189:9: Call
  187. 
  188.     if (n > bc->bits_left) {
  189.         refill_32(bc);
               ^
  190.         if (bc->bits_left < 32)
  191.             bc->bits_left = n;

libavcodec/bitstream.h:60:1: <RHS trace>
58. }
59. 
60. static inline void refill_32(BitstreamContext *bc)
    ^
61. {
62.     if (bc->ptr >= bc->buffer_end)

libavcodec/bitstream.h:60:1: Parameter `bc->bits_left`
    58. }
    59. 
    60. static inline void refill_32(BitstreamContext *bc)
        ^
    61. {
    62.     if (bc->ptr >= bc->buffer_end)

libavcodec/bitstream.h:68:5: Binary operation: (32 - [0, max(63, bc->bits_left)]):unsigned32 by call to `bitstream_read` 
    66.     bc->bits       = (uint64_t)AV_RL32(bc->ptr) << bc->bits_left | bc->bits;
    67. #else
    68.     bc->bits       = bc->bits | (uint64_t)AV_RB32(bc->ptr) << (32 - bc->bits_left);
            ^
    69. #endif
    70.     bc->ptr       += 4;

static inline void refill_32(BitstreamContext *bc)
{
    if (bc->ptr >= bc->buffer_end)
        return;
#ifdef BITSTREAM_READER_LE
    bc->bits       = (uint64_t)AV_RL32(bc->ptr) << bc->bits_left | bc->bits;
#else
    bc->bits       = bc->bits | (uint64_t)AV_RB32(bc->ptr) << (32 - bc->bits_left);
#endif
    bc->ptr       += 4;
    bc->bits_left += 32;
}
['static int wv_get_value(WavpackFrameContext *ctx, BitstreamContext *bc,\n                        int channel, int *last)\n{\n    int t, t2;\n    int sign, base, add, ret;\n    WvChannel *c = &ctx->ch[channel];\n    *last = 0;\n    if ((ctx->ch[0].median[0] < 2U) && (ctx->ch[1].median[0] < 2U) &&\n        !ctx->zero && !ctx->one) {\n        if (ctx->zeroes) {\n            ctx->zeroes--;\n            if (ctx->zeroes) {\n                c->slow_level -= LEVEL_DECAY(c->slow_level);\n                return 0;\n            }\n        } else {\n            t = get_unary_0_33(bc);\n            if (t >= 2) {\n                if (bitstream_bits_left(bc) < t - 1)\n                    goto error;\n                t = bitstream_read(bc, t - 1) | (1 << (t - 1));\n            } else {\n                if (bitstream_bits_left(bc) < 0)\n                    goto error;\n            }\n            ctx->zeroes = t;\n            if (ctx->zeroes) {\n                memset(ctx->ch[0].median, 0, sizeof(ctx->ch[0].median));\n                memset(ctx->ch[1].median, 0, sizeof(ctx->ch[1].median));\n                c->slow_level -= LEVEL_DECAY(c->slow_level);\n                return 0;\n            }\n        }\n    }\n    if (ctx->zero) {\n        t         = 0;\n        ctx->zero = 0;\n    } else {\n        t = get_unary_0_33(bc);\n        if (bitstream_bits_left(bc) < 0)\n            goto error;\n        if (t == 16) {\n            t2 = get_unary_0_33(bc);\n            if (t2 < 2) {\n                if (bitstream_bits_left(bc) < 0)\n                    goto error;\n                t += t2;\n            } else {\n                if (bitstream_bits_left(bc) < t2 - 1)\n                    goto error;\n                t += bitstream_read(bc, t2 - 1) | (1 << (t2 - 1));\n            }\n        }\n        if (ctx->one) {\n            ctx->one = t & 1;\n            t        = (t >> 1) + 1;\n        } else {\n            ctx->one = t & 1;\n            t      >>= 1;\n        }\n        ctx->zero = !ctx->one;\n    }\n    if (ctx->hybrid && !channel)\n        update_error_limit(ctx);\n    if (!t) {\n        base = 0;\n        add  = GET_MED(0) - 1;\n        DEC_MED(0);\n    } else if (t == 1) {\n        base = GET_MED(0);\n        add  = GET_MED(1) - 1;\n        INC_MED(0);\n        DEC_MED(1);\n    } else if (t == 2) {\n        base = GET_MED(0) + GET_MED(1);\n        add  = GET_MED(2) - 1;\n        INC_MED(0);\n        INC_MED(1);\n        DEC_MED(2);\n    } else {\n        base = GET_MED(0) + GET_MED(1) + GET_MED(2) * (t - 2);\n        add  = GET_MED(2) - 1;\n        INC_MED(0);\n        INC_MED(1);\n        INC_MED(2);\n    }\n    if (!c->error_limit) {\n        ret = base + get_tail(bc, add);\n        if (bitstream_bits_left(bc) <= 0)\n            goto error;\n    } else {\n        int mid = (base * 2 + add + 1) >> 1;\n        while (add > c->error_limit) {\n            if (bitstream_bits_left(bc) <= 0)\n                goto error;\n            if (bitstream_read_bit(bc)) {\n                add -= (mid - base);\n                base = mid;\n            } else\n                add = mid - base - 1;\n            mid = (base * 2 + add + 1) >> 1;\n        }\n        ret = mid;\n    }\n    sign = bitstream_read_bit(bc);\n    if (ctx->hybrid_bitrate)\n        c->slow_level += wp_log2(ret) - LEVEL_DECAY(c->slow_level);\n    return sign ? ~ret : ret;\nerror:\n    *last = 1;\n    return 0;\n}', 'static inline int get_unary_0_33(BitstreamContext *bc)\n{\n    return get_unary(bc, 0, 33);\n}', 'static inline int get_unary(BitstreamContext *bc, int stop, int len)\n{\n    int i;\n    for (i = 0; i < len && bitstream_read_bit(bc) != stop; i++)\n        ;\n    return i;\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 void refill_32(BitstreamContext *bc)\n{\n    if (bc->ptr >= bc->buffer_end)\n        return;\n#ifdef BITSTREAM_READER_LE\n    bc->bits       = (uint64_t)AV_RL32(bc->ptr) << bc->bits_left | bc->bits;\n#else\n    bc->bits       = bc->bits | (uint64_t)AV_RB32(bc->ptr) << (32 - bc->bits_left);\n#endif\n    bc->ptr       += 4;\n    bc->bits_left += 32;\n}']