libavcodec/snow.c:3615: error: Buffer Overrun L3
  Offset added: 4 Size: [0, +oo].

libavcodec/snow.c:3565:1: <Length trace>
3563.     dst= tmp;
3564. 
3565. static int decode_header(SnowContext *s){
      ^
3566.     int plane_index, tmp;
3567.     uint8_t kstate[32];

libavcodec/snow.c:3565:1: Parameter `s->plane[*].hcoeff[*]`
3563.     dst= tmp;
3564. 
3565. static int decode_header(SnowContext *s){
      ^
3566.     int plane_index, tmp;
3567.     uint8_t kstate[32];

libavcodec/snow.c:3615:13: Array access: Offset added: 4 Size: [0, +oo]
3613.             s->plane[2].diag_mc= s->plane[1].diag_mc;
3614.             s->plane[2].htaps  = s->plane[1].htaps;
3615.             memcpy(s->plane[2].hcoeff, s->plane[1].hcoeff, sizeof(s->plane[1].hcoeff));
                  ^
3616.         }
3617.         if(get_rac(&s->c, s->header_state)){
