test/handshake_helper.c:325: error: NULL_DEREFERENCE
  pointer `ex_data` last assigned on line 323 could be null and is dereferenced at line 325, column 5.
Showing all 10 steps of the trace


test/handshake_helper.c:318:1: start of procedure do_not_call_session_ticket_cb()
316.   }
317.   
318. > static int do_not_call_session_ticket_cb(SSL *s, unsigned char *key_name,
319.                                            unsigned char *iv,
320.                                            EVP_CIPHER_CTX *ctx,

test/handshake_helper.c:323:5: 
321.                                            HMAC_CTX *hctx, int enc)
322.   {
323. >     HANDSHAKE_EX_DATA *ex_data =
324.           (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
325.       ex_data->session_ticket_do_not_call = 1;

ssl/ssl_lib.c:4014:1: start of procedure SSL_get_ex_data()
  4012.   }
  4013.   
  4014. > void *SSL_get_ex_data(const SSL *s, int idx)
  4015.   {
  4016.       return CRYPTO_get_ex_data(&s->ex_data, idx);

ssl/ssl_lib.c:4016:5: 
  4014.   void *SSL_get_ex_data(const SSL *s, int idx)
  4015.   {
  4016. >     return CRYPTO_get_ex_data(&s->ex_data, idx);
  4017.   }
  4018.   

crypto/ex_data.c:393:1: start of procedure CRYPTO_get_ex_data()
    391.    * particular index in the class used by this variable
    392.    */
    393. > void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx)
    394.   {
    395.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))

crypto/ex_data.c:395:9: Taking true branch
    393.   void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx)
    394.   {
    395.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))
                   ^
    396.           return NULL;
    397.       return sk_void_value(ad->sk, idx);

crypto/ex_data.c:396:9: 
    394.   {
    395.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))
    396. >         return NULL;
    397.       return sk_void_value(ad->sk, idx);
    398.   }

crypto/ex_data.c:398:1: return from a call to CRYPTO_get_ex_data
    396.           return NULL;
    397.       return sk_void_value(ad->sk, idx);
    398. > }

ssl/ssl_lib.c:4017:1: return from a call to SSL_get_ex_data
  4015.   {
  4016.       return CRYPTO_get_ex_data(&s->ex_data, idx);
  4017. > }
  4018.   
  4019.   int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)

test/handshake_helper.c:325:5: 
323.       HANDSHAKE_EX_DATA *ex_data =
324.           (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
325. >     ex_data->session_ticket_do_not_call = 1;
326.       return 0;
327.   }
