libavformat/rtpdec_mpeg4.c:186: error: Null Dereference
  pointer `pkt->data` last assigned on line 185 could be null and is dereferenced by call to `memcpy()` at line 186, column 5.

libavformat/rtpdec_mpeg4.c:170:1: start of procedure aac_parse_packet()
168. 
169. /* Follows RFC 3640 */
170. static int aac_parse_packet(AVFormatContext *ctx,
     ^
171.                             PayloadContext *data,
172.                             AVStream *st,

libavformat/rtpdec_mpeg4.c:177:9: Taking false branch
175.                             const uint8_t *buf, int len, int flags)
176. {
177.     if (rtp_parse_mp4_au(data, buf))
             ^
178.         return -1;
179. 

libavformat/rtpdec_mpeg4.c:180:5: 
178.         return -1;
179. 
180.     buf += data->au_headers_length_bytes + 2;
         ^
181.     len -= data->au_headers_length_bytes + 2;
182. 

libavformat/rtpdec_mpeg4.c:181:5: 
179. 
180.     buf += data->au_headers_length_bytes + 2;
181.     len -= data->au_headers_length_bytes + 2;
         ^
182. 
183.     /* XXX: Fixme we only handle the case where rtp_parse_mp4_au define

libavformat/rtpdec_mpeg4.c:185:5: 
183.     /* XXX: Fixme we only handle the case where rtp_parse_mp4_au define
184.                     one au_header */
185.     av_new_packet(pkt, data->au_headers[0].size);
         ^
186.     memcpy(pkt->data, buf, data->au_headers[0].size);
187. 

libavcodec/avpacket.c:61:1: start of procedure av_new_packet()
  59. }
  60. 
  61. int av_new_packet(AVPacket *pkt, int size)
      ^
  62. {
  63.     uint8_t *data = NULL;

libavcodec/avpacket.c:63:5: 
  61. int av_new_packet(AVPacket *pkt, int size)
  62. {
  63.     uint8_t *data = NULL;
          ^
  64.     if ((unsigned)size < (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE)
  65.         data = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);

libavcodec/avpacket.c:64:9: Taking true branch
  62. {
  63.     uint8_t *data = NULL;
  64.     if ((unsigned)size < (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE)
              ^
  65.         data = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
  66.     if (data) {

libavcodec/avpacket.c:65:9: 
  63.     uint8_t *data = NULL;
  64.     if ((unsigned)size < (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE)
  65.         data = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
              ^
  66.     if (data) {
  67.         memset(data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);

libavutil/mem.c:64:1: start of procedure av_malloc()
    62.    linker will do it automatically. */
    63. 
    64. void *av_malloc(size_t size)
        ^
    65. {
    66.     void *ptr = NULL;

libavutil/mem.c:66:5: 
    64. void *av_malloc(size_t size)
    65. {
    66.     void *ptr = NULL;
            ^
    67. #if CONFIG_MEMALIGN_HACK
    68.     long diff;

libavutil/mem.c:71:5: 
    69. #endif
    70. 
    71.     assert(size);
            ^
    72. 
    73.     /* let's disallow possible ambiguous cases */

libavutil/mem.c:74:9: Taking true branch
    72. 
    73.     /* let's disallow possible ambiguous cases */
    74.     if (size > (INT_MAX-32) || !size)
                ^
    75.         return NULL;
    76. 

libavutil/mem.c:75:9: 
    73.     /* let's disallow possible ambiguous cases */
    74.     if (size > (INT_MAX-32) || !size)
    75.         return NULL;
                ^
    76. 
    77. #if CONFIG_MEMALIGN_HACK

libavutil/mem.c:117:1: return from a call to av_malloc
    115. #endif
    116.     return ptr;
    117. }
         ^
    118. 
    119. void *av_realloc(void *ptr, size_t size)

libavcodec/avpacket.c:66:9: Taking false branch
  64.     if ((unsigned)size < (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE)
  65.         data = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
  66.     if (data) {
              ^
  67.         memset(data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
  68.     } else

libavcodec/avpacket.c:69:9: 
  67.         memset(data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
  68.     } else
  69.         size = 0;
              ^
  70. 
  71.     av_init_packet(pkt);

libavcodec/avpacket.c:71:5: 
  69.         size = 0;
  70. 
  71.     av_init_packet(pkt);
          ^
  72.     pkt->data     = data;
  73.     pkt->size     = size;

libavcodec/avpacket.c:47:1: start of procedure av_init_packet()
    45. }
    46. 
    47. void av_init_packet(AVPacket *pkt)
        ^
    48. {
    49.     pkt->pts                  = AV_NOPTS_VALUE;

libavcodec/avpacket.c:49:5: 
    47. void av_init_packet(AVPacket *pkt)
    48. {
    49.     pkt->pts                  = AV_NOPTS_VALUE;
            ^
    50.     pkt->dts                  = AV_NOPTS_VALUE;
    51.     pkt->pos                  = -1;

libavcodec/avpacket.c:50:5: 
    48. {
    49.     pkt->pts                  = AV_NOPTS_VALUE;
    50.     pkt->dts                  = AV_NOPTS_VALUE;
            ^
    51.     pkt->pos                  = -1;
    52.     pkt->duration             = 0;

libavcodec/avpacket.c:51:5: 
    49.     pkt->pts                  = AV_NOPTS_VALUE;
    50.     pkt->dts                  = AV_NOPTS_VALUE;
    51.     pkt->pos                  = -1;
            ^
    52.     pkt->duration             = 0;
    53.     pkt->convergence_duration = 0;

libavcodec/avpacket.c:52:5: 
    50.     pkt->dts                  = AV_NOPTS_VALUE;
    51.     pkt->pos                  = -1;
    52.     pkt->duration             = 0;
            ^
    53.     pkt->convergence_duration = 0;
    54.     pkt->flags                = 0;

libavcodec/avpacket.c:53:5: 
    51.     pkt->pos                  = -1;
    52.     pkt->duration             = 0;
    53.     pkt->convergence_duration = 0;
            ^
    54.     pkt->flags                = 0;
    55.     pkt->stream_index         = 0;

libavcodec/avpacket.c:54:5: 
    52.     pkt->duration             = 0;
    53.     pkt->convergence_duration = 0;
    54.     pkt->flags                = 0;
            ^
    55.     pkt->stream_index         = 0;
    56.     pkt->destruct             = NULL;

libavcodec/avpacket.c:55:5: 
    53.     pkt->convergence_duration = 0;
    54.     pkt->flags                = 0;
    55.     pkt->stream_index         = 0;
            ^
    56.     pkt->destruct             = NULL;
    57.     pkt->side_data            = NULL;

libavcodec/avpacket.c:56:5: 
    54.     pkt->flags                = 0;
    55.     pkt->stream_index         = 0;
    56.     pkt->destruct             = NULL;
            ^
    57.     pkt->side_data            = NULL;
    58.     pkt->side_data_elems      = 0;

libavcodec/avpacket.c:57:5: 
    55.     pkt->stream_index         = 0;
    56.     pkt->destruct             = NULL;
    57.     pkt->side_data            = NULL;
            ^
    58.     pkt->side_data_elems      = 0;
    59. }

libavcodec/avpacket.c:58:5: 
    56.     pkt->destruct             = NULL;
    57.     pkt->side_data            = NULL;
    58.     pkt->side_data_elems      = 0;
            ^
    59. }
    60. 

libavcodec/avpacket.c:59:1: return from a call to av_init_packet
    57.     pkt->side_data            = NULL;
    58.     pkt->side_data_elems      = 0;
    59. }
        ^
    60. 
    61. int av_new_packet(AVPacket *pkt, int size)

libavcodec/avpacket.c:72:5: 
  70. 
  71.     av_init_packet(pkt);
  72.     pkt->data     = data;
          ^
  73.     pkt->size     = size;
  74.     pkt->destruct = av_destruct_packet;

libavcodec/avpacket.c:73:5: 
  71.     av_init_packet(pkt);
  72.     pkt->data     = data;
  73.     pkt->size     = size;
          ^
  74.     pkt->destruct = av_destruct_packet;
  75.     if (!data)

libavcodec/avpacket.c:74:5: 
  72.     pkt->data     = data;
  73.     pkt->size     = size;
  74.     pkt->destruct = av_destruct_packet;
          ^
  75.     if (!data)
  76.         return AVERROR(ENOMEM);

libavcodec/avpacket.c:75:10: Taking true branch
  73.     pkt->size     = size;
  74.     pkt->destruct = av_destruct_packet;
  75.     if (!data)
               ^
  76.         return AVERROR(ENOMEM);
  77.     return 0;

libavcodec/avpacket.c:76:9: 
  74.     pkt->destruct = av_destruct_packet;
  75.     if (!data)
  76.         return AVERROR(ENOMEM);
              ^
  77.     return 0;
  78. }

libavcodec/avpacket.c:78:1: return from a call to av_new_packet
  76.         return AVERROR(ENOMEM);
  77.     return 0;
  78. }
      ^
  79. 
  80. void av_shrink_packet(AVPacket *pkt, int size)

libavformat/rtpdec_mpeg4.c:186:5: 
184.                     one au_header */
185.     av_new_packet(pkt, data->au_headers[0].size);
186.     memcpy(pkt->data, buf, data->au_headers[0].size);
         ^
187. 
188.     pkt->stream_index = st->index;
