在keil中调试时出现垃圾字符

Question

I'm working with linked list in keil, I have 3 structs which are:

typedef struct CanSnifferTrame Trame ;
struct CanSnifferTrame{
  uint32_t id;
  uint32_t lastTime;
  uint8_t prevData[8];
  uint8_t lastData[8];
  uint32_t freq[8];
  uint32_t lastfreq[8];
  uint32_t intervalle[8];
  uint8_t changing;
  uint8_t count ;
  Trame *next ;

};
typedef struct Tete Sniffer ;
struct Tete {
    Trame *first;
};
typedef struct Result Result ;
struct Result{
  uint8_t snifferC;
  Sniffer *tete;
};

I try just to initialize the list

Result *ResultVar = malloc(sizeof(ResultVar));
ResultVar->snifferC = 0 ;
ResultVar->tete = malloc(sizeof(Sniffer));
ResultVar->tete->first = NULL;

While debugging, ResultVar->tete->first is NULL , but the list is not empty, it has infinity of elements ( id , lasttime , freq , ...) with junk characters.

Answer 1

You need to malloc(sizeof(*ResultVar)) or malloc(sizeof(Result)) instead of malloc(sizeof(ResultVar)) .