libavcodec/adxenc.c:122: error: Null Dereference
  pointer `avctx->coded_frame` last assigned on line 121 could be null and is dereferenced at line 122, column 5.

libavcodec/adxenc.c:115:1: start of procedure adx_encode_init()
113. }
114. 
115. static av_cold int adx_encode_init(AVCodecContext *avctx)
     ^
116. {
117.     if (avctx->channels > 2)

libavcodec/adxenc.c:117:9: Taking false branch
115. static av_cold int adx_encode_init(AVCodecContext *avctx)
116. {
117.     if (avctx->channels > 2)
             ^
118.         return -1; /* only stereo or mono =) */
119.     avctx->frame_size = 32;

libavcodec/adxenc.c:119:5: 
117.     if (avctx->channels > 2)
118.         return -1; /* only stereo or mono =) */
119.     avctx->frame_size = 32;
         ^
120. 
121.     avctx->coded_frame= avcodec_alloc_frame();

libavcodec/adxenc.c:121:5: 
119.     avctx->frame_size = 32;
120. 
121.     avctx->coded_frame= avcodec_alloc_frame();
         ^
122.     avctx->coded_frame->key_frame= 1;
123. 

libavcodec/utils.c:447:1: start of procedure avcodec_alloc_frame()
  445. }
  446. 
  447. AVFrame *avcodec_alloc_frame(void){
       ^
  448.     AVFrame *pic= av_malloc(sizeof(AVFrame));
  449. 

libavcodec/utils.c:448:5: 
  446. 
  447. AVFrame *avcodec_alloc_frame(void){
  448.     AVFrame *pic= av_malloc(sizeof(AVFrame));
           ^
  449. 
  450.     if(pic==NULL) return NULL;

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:72:8: Taking false branch
    70. 
    71.     /* let's disallow possible ambiguous cases */
    72.     if(size > (INT_MAX-32) )
               ^
    73.         return NULL;
    74. 

libavutil/mem.c:83:9: Taking false branch
    81.     ((char*)ptr)[-1]= diff;
    82. #elif HAVE_POSIX_MEMALIGN
    83.     if (posix_memalign(&ptr,32,size))
                ^
    84.         ptr = NULL;
    85. #elif HAVE_MEMALIGN

libavutil/mem.c:114:5: 
    112.     ptr = malloc(size);
    113. #endif
    114.     return ptr;
             ^
    115. }
    116. 

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

libavcodec/utils.c:450:8: Taking true branch
  448.     AVFrame *pic= av_malloc(sizeof(AVFrame));
  449. 
  450.     if(pic==NULL) return NULL;
              ^
  451. 
  452.     avcodec_get_frame_defaults(pic);

libavcodec/utils.c:450:19: 
  448.     AVFrame *pic= av_malloc(sizeof(AVFrame));
  449. 
  450.     if(pic==NULL) return NULL;
                         ^
  451. 
  452.     avcodec_get_frame_defaults(pic);

libavcodec/utils.c:455:1: return from a call to avcodec_alloc_frame
  453. 
  454.     return pic;
  455. }
       ^
  456. 
  457. int attribute_align_arg avcodec_open(AVCodecContext *avctx, AVCodec *codec)

libavcodec/adxenc.c:122:5: 
120. 
121.     avctx->coded_frame= avcodec_alloc_frame();
122.     avctx->coded_frame->key_frame= 1;
         ^
123. 
124. //    avctx->bit_rate = avctx->sample_rate*avctx->channels*18*8/32;

static av_cold int adx_encode_init(AVCodecContext *avctx)
{
    if (avctx->channels > 2)
        return -1;
    avctx->frame_size = 32;
    avctx->coded_frame= avcodec_alloc_frame();
    avctx->coded_frame->key_frame= 1;
    av_log(avctx, AV_LOG_DEBUG, "adx encode init\n");
    return 0;
}
['static av_cold int adx_encode_init(AVCodecContext *avctx)\n{\n    if (avctx->channels > 2)\n        return -1;\n    avctx->frame_size = 32;\n    avctx->coded_frame= avcodec_alloc_frame();\n    avctx->coded_frame->key_frame= 1;\n    av_log(avctx, AV_LOG_DEBUG, "adx encode init\\n");\n    return 0;\n}', 'AVFrame *avcodec_alloc_frame(void){\n    AVFrame *pic= av_malloc(sizeof(AVFrame));\n    if(pic==NULL) return NULL;\n    avcodec_get_frame_defaults(pic);\n    return pic;\n}', 'void *av_malloc(size_t size)\n{\n    void *ptr = NULL;\n#if CONFIG_MEMALIGN_HACK\n    long diff;\n#endif\n    if(size > (INT_MAX-32) )\n        return NULL;\n#if CONFIG_MEMALIGN_HACK\n    ptr = malloc(size+32);\n    if(!ptr)\n        return ptr;\n    diff= ((-(long)ptr - 1)&31) + 1;\n    ptr = (char*)ptr + diff;\n    ((char*)ptr)[-1]= diff;\n#elif HAVE_POSIX_MEMALIGN\n    if (posix_memalign(&ptr,32,size))\n        ptr = NULL;\n#elif HAVE_MEMALIGN\n    ptr = memalign(32,size);\n#else\n    ptr = malloc(size);\n#endif\n    return ptr;\n}']