test/handshake_helper.c:88: error: NULL_DEREFERENCE
  pointer `ex_data` last assigned on line 80 could be null and is dereferenced at line 88, column 13.
Showing all 12 steps of the trace


test/handshake_helper.c:77:1: start of procedure info_cb()
75.   static int ex_data_idx;
76.   
77. > static void info_cb(const SSL *s, int where, int ret)
78.   {
79.       if (where & SSL_CB_ALERT) {

test/handshake_helper.c:79:9: Taking true branch
77.   static void info_cb(const SSL *s, int where, int ret)
78.   {
79.       if (where & SSL_CB_ALERT) {
              ^
80.           HANDSHAKE_EX_DATA *ex_data =
81.               (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));

test/handshake_helper.c:80:9: 
78.   {
79.       if (where & SSL_CB_ALERT) {
80. >         HANDSHAKE_EX_DATA *ex_data =
81.               (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
82.           if (where & SSL_CB_WRITE) {

ssl/ssl_lib.c:3784:1: start of procedure SSL_get_ex_data()
  3782.   }
  3783.   
  3784. > void *SSL_get_ex_data(const SSL *s, int idx)
  3785.   {
  3786.       return (CRYPTO_get_ex_data(&s->ex_data, idx));

ssl/ssl_lib.c:3786:5: 
  3784.   void *SSL_get_ex_data(const SSL *s, int idx)
  3785.   {
  3786. >     return (CRYPTO_get_ex_data(&s->ex_data, idx));
  3787.   }
  3788.   

crypto/ex_data.c:379:1: start of procedure CRYPTO_get_ex_data()
    377.    * particular index in the class used by this variable
    378.    */
    379. > void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx)
    380.   {
    381.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))

crypto/ex_data.c:381:9: Taking true branch
    379.   void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx)
    380.   {
    381.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))
                   ^
    382.           return NULL;
    383.       return sk_void_value(ad->sk, idx);

crypto/ex_data.c:382:9: 
    380.   {
    381.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))
    382. >         return NULL;
    383.       return sk_void_value(ad->sk, idx);
    384.   }

crypto/ex_data.c:384:1: return from a call to CRYPTO_get_ex_data
    382.           return NULL;
    383.       return sk_void_value(ad->sk, idx);
    384. > }

ssl/ssl_lib.c:3787:1: return from a call to SSL_get_ex_data
  3785.   {
  3786.       return (CRYPTO_get_ex_data(&s->ex_data, idx));
  3787. > }
  3788.   
  3789.   int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)

test/handshake_helper.c:82:13: Taking false branch
80.           HANDSHAKE_EX_DATA *ex_data =
81.               (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
82.           if (where & SSL_CB_WRITE) {
                  ^
83.               ex_data->alert_sent = ret;
84.               if (strcmp(SSL_alert_type_string(ret), "F") == 0

test/handshake_helper.c:88:13: 
86.                   ex_data->num_fatal_alerts_sent++;
87.           } else {
88. >             ex_data->alert_received = ret;
89.           }
90.       }
