libavcodec/truemotion2.c:266: error: Integer Overflow L2
  ([1, +oo] - [1, 32]):unsigned32 by call to `bitstream_read`.

libavcodec/truemotion2.c:258:10: Call
256. 
257.     d  = bitstream_read(&ctx->bc, 9);
258.     mb = bitstream_read(&ctx->bc, 5);
              ^
259. 
260.     if ((d < 1) || (d > TM2_DELTAS) || (mb < 1) || (mb > 32)) {

libavcodec/bitstream.h:186:9: Assignment
  184. {
  185.     if (!n)
  186.         return 0;
               ^
  187. 
  188.     if (n > bc->bits_left) {

libavcodec/truemotion2.c:258:5: Assignment
256. 
257.     d  = bitstream_read(&ctx->bc, 9);
258.     mb = bitstream_read(&ctx->bc, 5);
         ^
259. 
260.     if ((d < 1) || (d > TM2_DELTAS) || (mb < 1) || (mb > 32)) {

libavcodec/truemotion2.c:266:13: Call
264. 
265.     for (i = 0; i < d; i++) {
266.         v = bitstream_read(&ctx->bc, mb);
                 ^
267.         if (v & (1 << (mb - 1)))
268.             ctx->deltas[stream_id][i] = v - (1 << mb);

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] - [1, 32]):unsigned32 by call to `bitstream_read` 
    137.     bc->bits <<= n;
    138. #endif
    139.     bc->bits_left -= n;
             ^
    140. 
    141.     return ret;
