libavformat/rtsp.c:1630: error: Null Dereference
  pointer `content` last assigned on line 1624 could be null and is dereferenced at line 1630, column 5.

libavformat/rtsp.c:1613:1: start of procedure sdp_read_header()
1611. #define SDP_MAX_SIZE 8192
1612. 
1613. static int sdp_read_header(AVFormatContext *s,
      ^
1614.                            AVFormatParameters *ap)
1615. {

libavformat/rtsp.c:1616:5: 
1614.                            AVFormatParameters *ap)
1615. {
1616.     RTSPState *rt = s->priv_data;
          ^
1617.     RTSPStream *rtsp_st;
1618.     int size, i, err;

libavformat/rtsp.c:1624:5: 
1622.     /* read the whole sdp file */
1623.     /* XXX: better loading */
1624.     content = av_malloc(SDP_MAX_SIZE);
          ^
1625.     size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
1626.     if (size <= 0) {

libavutil/mem.c:47:1: start of procedure av_malloc()
  45.    linker will do it automatically. */
  46. 
  47. void *av_malloc(unsigned int size)
      ^
  48. {
  49.     void *ptr = NULL;

libavutil/mem.c:49:5: 
  47. void *av_malloc(unsigned int size)
  48. {
  49.     void *ptr = NULL;
          ^
  50. #if CONFIG_MEMALIGN_HACK
  51.     long diff;

libavutil/mem.c:55:8: Taking false branch
  53. 
  54.     /* let's disallow possible ambiguous cases */
  55.     if(size > (INT_MAX-16) )
             ^
  56.         return NULL;
  57. 

libavutil/mem.c:66:9: Taking true branch
  64.     ((char*)ptr)[-1]= diff;
  65. #elif HAVE_POSIX_MEMALIGN
  66.     if (posix_memalign(&ptr,16,size))
              ^
  67.         ptr = NULL;
  68. #elif HAVE_MEMALIGN

libavutil/mem.c:67:9: 
  65. #elif HAVE_POSIX_MEMALIGN
  66.     if (posix_memalign(&ptr,16,size))
  67.         ptr = NULL;
              ^
  68. #elif HAVE_MEMALIGN
  69.     ptr = memalign(16,size);

libavutil/mem.c:99:5: 
   97.     ptr = malloc(size);
   98. #endif
   99.     return ptr;
           ^
  100. }
  101. 

libavutil/mem.c:100:1: return from a call to av_malloc
   98. #endif
   99.     return ptr;
  100. }
       ^
  101. 
  102. void *av_realloc(void *ptr, unsigned int size)

libavformat/rtsp.c:1625:5: Skipping get_buffer(): empty list of specs
1623.     /* XXX: better loading */
1624.     content = av_malloc(SDP_MAX_SIZE);
1625.     size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
          ^
1626.     if (size <= 0) {
1627.         av_free(content);

libavformat/rtsp.c:1626:9: Taking false branch
1624.     content = av_malloc(SDP_MAX_SIZE);
1625.     size = get_buffer(s->pb, content, SDP_MAX_SIZE - 1);
1626.     if (size <= 0) {
              ^
1627.         av_free(content);
1628.         return AVERROR_INVALIDDATA;

libavformat/rtsp.c:1630:5: 
1628.         return AVERROR_INVALIDDATA;
1629.     }
1630.     content[size] ='\0';
          ^
1631. 
1632.     sdp_parse(s, content);
