libavcodec/ra288.c:187: error: Null Dereference
  pointer `&gb->buffer` last assigned on line 184 could be null and is dereferenced by call to `get_bits()` at line 187, column 31.

libavcodec/ra288.c:165:1: start of procedure ra288_decode_frame()
163. }
164. 
165. static int ra288_decode_frame(AVCodecContext * avctx, void *data,
     ^
166.                               int *data_size, const uint8_t * buf,
167.                               int buf_size)

libavcodec/ra288.c:169:5: 
167.                               int buf_size)
168. {
169.     float *out = data;
         ^
170.     int i, j;
171.     RA288Context *ractx = avctx->priv_data;

libavcodec/ra288.c:171:5: 
169.     float *out = data;
170.     int i, j;
171.     RA288Context *ractx = avctx->priv_data;
         ^
172.     GetBitContext gb;
173. 

libavcodec/ra288.c:174:9: Taking false branch
172.     GetBitContext gb;
173. 
174.     if (buf_size < avctx->block_align) {
             ^
175.         av_log(avctx, AV_LOG_ERROR,
176.                "Error! Input buffer is too small [%d<%d]\n",

libavcodec/ra288.c:181:9: Taking false branch
179.     }
180. 
181.     if (*data_size < 32*5*4)
             ^
182.         return -1;
183. 

libavcodec/ra288.c:184:5: 
182.         return -1;
183. 
184.     init_get_bits(&gb, buf, avctx->block_align * 8);
         ^
185. 
186.     for (i=0; i < 32; i++) {

libavcodec/bitstream.h:745:1: start of procedure init_get_bits()
  743.  * @param bit_size the size of the buffer in bits
  744.  */
  745. static inline void init_get_bits(GetBitContext *s,
       ^
  746.                    const uint8_t *buffer, int bit_size)
  747. {

libavcodec/bitstream.h:748:5: 
  746.                    const uint8_t *buffer, int bit_size)
  747. {
  748.     int buffer_size= (bit_size+7)>>3;
           ^
  749.     if(buffer_size < 0 || bit_size < 0) {
  750.         buffer_size = bit_size = 0;

libavcodec/bitstream.h:749:8: Taking true branch
  747. {
  748.     int buffer_size= (bit_size+7)>>3;
  749.     if(buffer_size < 0 || bit_size < 0) {
              ^
  750.         buffer_size = bit_size = 0;
  751.         buffer = NULL;

libavcodec/bitstream.h:750:9: 
  748.     int buffer_size= (bit_size+7)>>3;
  749.     if(buffer_size < 0 || bit_size < 0) {
  750.         buffer_size = bit_size = 0;
               ^
  751.         buffer = NULL;
  752.     }

libavcodec/bitstream.h:751:9: 
  749.     if(buffer_size < 0 || bit_size < 0) {
  750.         buffer_size = bit_size = 0;
  751.         buffer = NULL;
               ^
  752.     }
  753. 

libavcodec/bitstream.h:754:5: 
  752.     }
  753. 
  754.     s->buffer= buffer;
           ^
  755.     s->size_in_bits= bit_size;
  756.     s->buffer_end= buffer + buffer_size;

libavcodec/bitstream.h:755:5: 
  753. 
  754.     s->buffer= buffer;
  755.     s->size_in_bits= bit_size;
           ^
  756.     s->buffer_end= buffer + buffer_size;
  757. #ifdef ALT_BITSTREAM_READER

libavcodec/bitstream.h:756:5: 
  754.     s->buffer= buffer;
  755.     s->size_in_bits= bit_size;
  756.     s->buffer_end= buffer + buffer_size;
           ^
  757. #ifdef ALT_BITSTREAM_READER
  758.     s->index=0;

libavcodec/bitstream.h:758:5: 
  756.     s->buffer_end= buffer + buffer_size;
  757. #ifdef ALT_BITSTREAM_READER
  758.     s->index=0;
           ^
  759. #elif defined LIBMPEG2_BITSTREAM_READER
  760.     s->buffer_ptr = (uint8_t*)((intptr_t)buffer&(~1));

libavcodec/bitstream.h:768:1: return from a call to init_get_bits
  766.     skip_bits_long(s, 0);
  767. #endif
  768. }
       ^
  769. 
  770. static inline void align_get_bits(GetBitContext *s)

libavcodec/ra288.c:186:10: 
184.     init_get_bits(&gb, buf, avctx->block_align * 8);
185. 
186.     for (i=0; i < 32; i++) {
              ^
187.         float gain = amptable[get_bits(&gb, 3)];
188.         int cb_coef = get_bits(&gb, 6 + (i&1));

libavcodec/ra288.c:186:15: Loop condition is true. Entering loop body
184.     init_get_bits(&gb, buf, avctx->block_align * 8);
185. 
186.     for (i=0; i < 32; i++) {
                   ^
187.         float gain = amptable[get_bits(&gb, 3)];
188.         int cb_coef = get_bits(&gb, 6 + (i&1));

libavcodec/ra288.c:187:9: 
185. 
186.     for (i=0; i < 32; i++) {
187.         float gain = amptable[get_bits(&gb, 3)];
             ^
188.         int cb_coef = get_bits(&gb, 6 + (i&1));
189. 

libavcodec/bitstream.h:642:1: start of procedure get_bits()
  640.  * Note, the alt bitstream reader can read up to 25 bits, but the libmpeg2 reader can't
  641.  */
  642. static inline unsigned int get_bits(GetBitContext *s, int n){
       ^
  643.     register int tmp;
  644.     OPEN_READER(re, s)

libavcodec/bitstream.h:644:5: 
  642. static inline unsigned int get_bits(GetBitContext *s, int n){
  643.     register int tmp;
  644.     OPEN_READER(re, s)
           ^
  645.     UPDATE_CACHE(re, s)
  646.     tmp= SHOW_UBITS(re, s, n);

libavcodec/bitstream.h:645:5: 
  643.     register int tmp;
  644.     OPEN_READER(re, s)
  645.     UPDATE_CACHE(re, s)
           ^
  646.     tmp= SHOW_UBITS(re, s, n);
  647.     LAST_SKIP_BITS(re, s, n)
