libavcodec/gsmdec_template.c:139: error: Integer Overflow L2
  ([1, +oo] - 7):unsigned32 by call to `bitstream_read`.

libavcodec/gsmdec_template.c:139:24: Call
137. 
138.     for (i = 0; i < 4; i++) {
139.         int lag      = bitstream_read(bc, 7);
                            ^
140.         int gain_idx = bitstream_read(bc, 2);
141.         int offset   = bitstream_read(bc, 2);

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] - 7):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 gsm_decode_block(AVCodecContext *avctx, int16_t *samples,\n                            BitstreamContext *bc, int mode)\n{\n    GSMContext *ctx = avctx->priv_data;\n    int i;\n    int16_t *ref_dst = ctx->ref_buf + 120;\n    int *lar = ctx->lar[ctx->lar_idx];\n    lar[0] = decode_log_area(bitstream_read(bc, 6), 13107,  1 << 15);\n    lar[1] = decode_log_area(bitstream_read(bc, 6), 13107,  1 << 15);\n    lar[2] = decode_log_area(bitstream_read(bc, 5), 13107, (1 << 14) + 2048 * 2);\n    lar[3] = decode_log_area(bitstream_read(bc, 5), 13107, (1 << 14) - 2560 * 2);\n    lar[4] = decode_log_area(bitstream_read(bc, 4), 19223, (1 << 13) +   94 * 2);\n    lar[5] = decode_log_area(bitstream_read(bc, 4), 17476, (1 << 13) - 1792 * 2);\n    lar[6] = decode_log_area(bitstream_read(bc, 3), 31454, (1 << 12) -  341 * 2);\n    lar[7] = decode_log_area(bitstream_read(bc, 3), 29708, (1 << 12) - 1144 * 2);\n    for (i = 0; i < 4; i++) {\n        int lag      = bitstream_read(bc, 7);\n        int gain_idx = bitstream_read(bc, 2);\n        int offset   = bitstream_read(bc, 2);\n        lag = av_clip(lag, 40, 120);\n        long_term_synth(ref_dst, lag, gain_idx);\n        apcm_dequant_add(bc, ref_dst + offset, ff_gsm_apcm_bits[mode][i]);\n        ref_dst += 40;\n    }\n    memcpy(ctx->ref_buf, ctx->ref_buf + 160, 120 * sizeof(*ctx->ref_buf));\n    short_term_synth(ctx, samples, ctx->ref_buf + 120);\n    ctx->msr = postprocess(samples, ctx->msr);\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}']