libavcodec/vorbis_enc.c:965: error: Null Dereference
  pointer `avccontext->coded_frame` last assigned on line 964 could be null and is dereferenced at line 965, column 5.

libavcodec/vorbis_enc.c:943:1: start of procedure vorbis_encode_init()
941. }
942. 
943. static av_cold int vorbis_encode_init(AVCodecContext *avccontext)
     ^
944. {
945.     vorbis_enc_context *venc = avccontext->priv_data;

libavcodec/vorbis_enc.c:945:5: 
943. static av_cold int vorbis_encode_init(AVCodecContext *avccontext)
944. {
945.     vorbis_enc_context *venc = avccontext->priv_data;
         ^
946. 
947.     if (avccontext->channels != 2) {

libavcodec/vorbis_enc.c:947:9: Taking false branch
945.     vorbis_enc_context *venc = avccontext->priv_data;
946. 
947.     if (avccontext->channels != 2) {
             ^
948.         av_log(avccontext, AV_LOG_ERROR, "Current FFmpeg Vorbis encoder only supports 2 channels.\n");
949.         return -1;

libavcodec/vorbis_enc.c:952:5: Skipping create_vorbis_context(): empty list of specs
950.     }
951. 
952.     create_vorbis_context(venc, avccontext);
         ^
953. 
954.     if (avccontext->flags & CODEC_FLAG_QSCALE)

libavcodec/vorbis_enc.c:954:9: Taking true branch
952.     create_vorbis_context(venc, avccontext);
953. 
954.     if (avccontext->flags & CODEC_FLAG_QSCALE)
             ^
955.         venc->quality = avccontext->global_quality / (float)FF_QP2LAMBDA / 10.;
956.     else

libavcodec/vorbis_enc.c:955:9: 
953. 
954.     if (avccontext->flags & CODEC_FLAG_QSCALE)
955.         venc->quality = avccontext->global_quality / (float)FF_QP2LAMBDA / 10.;
             ^
956.     else
957.         venc->quality = 1.;

libavcodec/vorbis_enc.c:958:5: 
956.     else
957.         venc->quality = 1.;
958.     venc->quality *= venc->quality;
         ^
959. 
960.     avccontext->extradata_size = put_main_header(venc, (uint8_t**)&avccontext->extradata);

libavcodec/vorbis_enc.c:960:5: Skipping put_main_header(): empty list of specs
958.     venc->quality *= venc->quality;
959. 
960.     avccontext->extradata_size = put_main_header(venc, (uint8_t**)&avccontext->extradata);
         ^
961. 
962.     avccontext->frame_size     = 1 << (venc->log2_blocksize[0] - 1);

libavcodec/vorbis_enc.c:962:5: 
960.     avccontext->extradata_size = put_main_header(venc, (uint8_t**)&avccontext->extradata);
961. 
962.     avccontext->frame_size     = 1 << (venc->log2_blocksize[0] - 1);
         ^
963. 
964.     avccontext->coded_frame            = avcodec_alloc_frame();

libavcodec/vorbis_enc.c:964:5: 
962.     avccontext->frame_size     = 1 << (venc->log2_blocksize[0] - 1);
963. 
964.     avccontext->coded_frame            = avcodec_alloc_frame();
         ^
965.     avccontext->coded_frame->key_frame = 1;
966. 

libavcodec/utils.c:423:1: start of procedure avcodec_alloc_frame()
  421. }
  422. 
  423. AVFrame *avcodec_alloc_frame(void){
       ^
  424.     AVFrame *pic= av_malloc(sizeof(AVFrame));
  425. 

libavcodec/utils.c:424:5: 
  422. 
  423. AVFrame *avcodec_alloc_frame(void){
  424.     AVFrame *pic= av_malloc(sizeof(AVFrame));
           ^
  425. 
  426.     if(pic==NULL) return NULL;

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 false 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: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)

libavcodec/utils.c:426:8: Taking true branch
  424.     AVFrame *pic= av_malloc(sizeof(AVFrame));
  425. 
  426.     if(pic==NULL) return NULL;
              ^
  427. 
  428.     avcodec_get_frame_defaults(pic);

libavcodec/utils.c:426:19: 
  424.     AVFrame *pic= av_malloc(sizeof(AVFrame));
  425. 
  426.     if(pic==NULL) return NULL;
                         ^
  427. 
  428.     avcodec_get_frame_defaults(pic);

libavcodec/utils.c:431:1: return from a call to avcodec_alloc_frame
  429. 
  430.     return pic;
  431. }
       ^
  432. 
  433. int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)

libavcodec/vorbis_enc.c:965:5: 
963. 
964.     avccontext->coded_frame            = avcodec_alloc_frame();
965.     avccontext->coded_frame->key_frame = 1;
         ^
966. 
967.     return 0;
