test/handshake_helper.c:85: error: NULL_DEREFERENCE
  pointer `ex_data` last assigned on line 82 could be null and is dereferenced at line 85, column 13.
Showing all 12 steps of the trace


test/handshake_helper.c:79:1: start of procedure info_cb()
77.   static int ex_data_idx;
78.   
79. > static void info_cb(const SSL *s, int where, int ret)
80.   {
81.       if (where & SSL_CB_ALERT) {

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

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

ssl/ssl_lib.c:3729:1: start of procedure SSL_get_ex_data()
  3727.   }
  3728.   
  3729. > void *SSL_get_ex_data(const SSL *s, int idx)
  3730.   {
  3731.       return (CRYPTO_get_ex_data(&s->ex_data, idx));

ssl/ssl_lib.c:3731:5: 
  3729.   void *SSL_get_ex_data(const SSL *s, int idx)
  3730.   {
  3731. >     return (CRYPTO_get_ex_data(&s->ex_data, idx));
  3732.   }
  3733.   

crypto/ex_data.c:387:1: start of procedure CRYPTO_get_ex_data()
    385.    * particular index in the class used by this variable
    386.    */
    387. > void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx)
    388.   {
    389.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))

crypto/ex_data.c:389:9: Taking true branch
    387.   void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx)
    388.   {
    389.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))
                   ^
    390.           return NULL;
    391.       return sk_void_value(ad->sk, idx);

crypto/ex_data.c:390:9: 
    388.   {
    389.       if (ad->sk == NULL || idx >= sk_void_num(ad->sk))
    390. >         return NULL;
    391.       return sk_void_value(ad->sk, idx);
    392.   }

crypto/ex_data.c:392:1: return from a call to CRYPTO_get_ex_data
    390.           return NULL;
    391.       return sk_void_value(ad->sk, idx);
    392. > }

ssl/ssl_lib.c:3732:1: return from a call to SSL_get_ex_data
  3730.   {
  3731.       return (CRYPTO_get_ex_data(&s->ex_data, idx));
  3732. > }
  3733.   
  3734.   int SSL_CTX_set_ex_data(SSL_CTX *s, int idx, void *arg)

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

test/handshake_helper.c:85:13: 
83.               (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
84.           if (where & SSL_CB_WRITE) {
85. >             ex_data->alert_sent = ret;
86.               if (strcmp(SSL_alert_type_string(ret), "F") == 0
87.                   || strcmp(SSL_alert_desc_string(ret), "CN") == 0)

static void info_cb(const SSL *s, int where, int ret)
{
    if (where & SSL_CB_ALERT) {
        HANDSHAKE_EX_DATA *ex_data =
            (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));
        if (where & SSL_CB_WRITE) {
            ex_data->alert_sent = ret;
            if (strcmp(SSL_alert_type_string(ret), "F") == 0
                || strcmp(SSL_alert_desc_string(ret), "CN") == 0)
                ex_data->num_fatal_alerts_sent++;
        } else {
            ex_data->alert_received = ret;
        }
    }
}
['static void info_cb(const SSL *s, int where, int ret)\n{\n    if (where & SSL_CB_ALERT) {\n        HANDSHAKE_EX_DATA *ex_data =\n            (HANDSHAKE_EX_DATA*)(SSL_get_ex_data(s, ex_data_idx));\n        if (where & SSL_CB_WRITE) {\n            ex_data->alert_sent = ret;\n            if (strcmp(SSL_alert_type_string(ret), "F") == 0\n                || strcmp(SSL_alert_desc_string(ret), "CN") == 0)\n                ex_data->num_fatal_alerts_sent++;\n        } else {\n            ex_data->alert_received = ret;\n        }\n    }\n}', 'void *SSL_get_ex_data(const SSL *s, int idx)\n{\n    return (CRYPTO_get_ex_data(&s->ex_data, idx));\n}', 'void *CRYPTO_get_ex_data(const CRYPTO_EX_DATA *ad, int idx)\n{\n    if (ad->sk == NULL || idx >= sk_void_num(ad->sk))\n        return NULL;\n    return sk_void_value(ad->sk, idx);\n}']