test/handshake_helper.c:103: error: NULL_DEREFERENCE
  pointer `ex_data` last assigned on line 95 could be null and is dereferenced at line 103, column 13.
Showing all 12 steps of the trace


test/handshake_helper.c:92:1: start of procedure info_cb()
90.   static int ex_data_idx;
91.   
92. > static void info_cb(const SSL *s, int where, int ret)
93.   {
94.       if (where & SSL_CB_ALERT) {

test/handshake_helper.c:94:9: Taking true branch
92.   static void info_cb(const SSL *s, int where, int ret)
93.   {
94.       if (where & SSL_CB_ALERT) {
              ^
95.           HANDSHAKE_EX_DATA *ex_data =
96.               (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));

test/handshake_helper.c:95:9: 
93.   {
94.       if (where & SSL_CB_ALERT) {
95. >         HANDSHAKE_EX_DATA *ex_data =
96.               (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
97.           if (where & SSL_CB_WRITE) {

ssl/ssl_lib.c:4205:1: start of procedure SSL_get_ex_data()
  4203.   }
  4204.   
  4205. > void *SSL_get_ex_data(const SSL *s, int idx)
  4206.   {
  4207.       return CRYPTO_get_ex_data(&s->ex_data, idx);

ssl/ssl_lib.c:4207:5: 
  4205.   void *SSL_get_ex_data(const SSL *s, int idx)
  4206.   {
  4207. >     return CRYPTO_get_ex_data(&s->ex_data, idx);
  4208.   }
  4209.   

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

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

crypto/ex_data.c:397:9: 
    395.   {
    396.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))
    397. >         return NULL;
    398.       return sk_void_value(ad->sk, idx);
    399.   }

crypto/ex_data.c:399:1: return from a call to CRYPTO_get_ex_data
    397.           return NULL;
    398.       return sk_void_value(ad->sk, idx);
    399. > }

ssl/ssl_lib.c:4208:1: return from a call to SSL_get_ex_data
  4206.   {
  4207.       return CRYPTO_get_ex_data(&s->ex_data, idx);
  4208. > }
  4209.   
  4210.   int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)

test/handshake_helper.c:97:13: Taking false branch
95.           HANDSHAKE_EX_DATA *ex_data =
96.               (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
97.           if (where & SSL_CB_WRITE) {
                   ^
98.               ex_data->alert_sent = ret;
99.               if (strcmp(SSL_alert_type_string(ret), "F") == 0

test/handshake_helper.c:103:13: 
101.                   ex_data->num_fatal_alerts_sent++;
102.           } else {
103. >             ex_data->alert_received = ret;
104.           }
105.       }
