test/drbgtest.c:136: error: NULL_DEREFERENCE
  pointer `t` last assigned on line 134 could be null and is dereferenced at line 136, column 5.
Showing all 10 steps of the trace


test/drbgtest.c:131:1: start of procedure kat_nonce()
129.   }
130.   
131. > static size_t kat_nonce(RAND_DRBG *drbg, unsigned char **pout,
132.                           int entropy, size_t min_len, size_t max_len)
133.   {

test/drbgtest.c:134:5: 
132.                           int entropy, size_t min_len, size_t max_len)
133.   {
134. >     TEST_CTX *t = (TEST_CTX *)RAND_DRBG_get_ex_data(drbg, app_data_index);
135.   
136.       t->noncecnt++;

crypto/rand/drbg_lib.c:878:1: start of procedure RAND_DRBG_get_ex_data()
  876.   }
  877.   
  878. > void *RAND_DRBG_get_ex_data(const RAND_DRBG *drbg, int idx)
  879.   {
  880.       return CRYPTO_get_ex_data(&drbg->ex_data, idx);

crypto/rand/drbg_lib.c:880:5: 
  878.   void *RAND_DRBG_get_ex_data(const RAND_DRBG *drbg, int idx)
  879.   {
  880. >     return CRYPTO_get_ex_data(&drbg->ex_data, idx);
  881.   }
  882.   

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. > }

crypto/rand/drbg_lib.c:881:1: return from a call to RAND_DRBG_get_ex_data
  879.   {
  880.       return CRYPTO_get_ex_data(&drbg->ex_data, idx);
  881. > }
  882.   
  883.   

test/drbgtest.c:136:5: 
134.       TEST_CTX *t = (TEST_CTX *)RAND_DRBG_get_ex_data(drbg, app_data_index);
135.   
136. >     t->noncecnt++;
137.       *pout = (unsigned char *)t->nonce;
138.       return t->noncelen;

static size_t kat_nonce(RAND_DRBG *drbg, unsigned char **pout,
                        int entropy, size_t min_len, size_t max_len)
{
    TEST_CTX *t = (TEST_CTX *)RAND_DRBG_get_ex_data(drbg, app_data_index);
    t->noncecnt++;
    *pout = (unsigned char *)t->nonce;
    return t->noncelen;
}
['static size_t kat_nonce(RAND_DRBG *drbg, unsigned char **pout,\n                        int entropy, size_t min_len, size_t max_len)\n{\n    TEST_CTX *t = (TEST_CTX *)RAND_DRBG_get_ex_data(drbg, app_data_index);\n    t->noncecnt++;\n    *pout = (unsigned char *)t->nonce;\n    return t->noncelen;\n}', 'void *RAND_DRBG_get_ex_data(const RAND_DRBG *drbg, int idx)\n{\n    return CRYPTO_get_ex_data(&drbg->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}']