libavformat/rtpenc_h263_rfc2190.c:116: error: Integer Overflow L2
  (32 - [0, 64]):unsigned32 by call to `bitstream_read`.

libavformat/rtpenc_h263_rfc2190.c:115:5: Call
113.     s->timestamp = s->cur_timestamp;
114. 
115.     bitstream_init(&bc, buf, size * 8);
         ^
116.     if (bitstream_read(&bc, 22) == 0x20) { /* Picture Start Code */
117.         info.tr  = bitstream_read(&bc, 8);

libavcodec/bitstream.h:85:9: Assignment
  83.         bc->buffer    =
  84.         bc->ptr       = NULL;
  85.         bc->bits_left = 0;
              ^
  86.         return AVERROR_INVALIDDATA;
  87.     }

libavformat/rtpenc_h263_rfc2190.c:116:9: Call
114. 
115.     bitstream_init(&bc, buf, size * 8);
116.     if (bitstream_read(&bc, 22) == 0x20) { /* Picture Start Code */
             ^
117.         info.tr  = bitstream_read(&bc, 8);
118.         bitstream_skip(&bc, 2); /* PTYPE start, H.261 disambiguation */

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, 64]):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;
