test/evp_test.c:880: error: NULL_DEREFERENCE
  pointer `mdat` last assigned on line 879 could be null and is dereferenced at line 880, column 5.
Showing all 16 steps of the trace


test/evp_test.c:848:1: start of procedure mac_test_init()
846.   } MAC_DATA;
847.   
848. > static int mac_test_init(EVP_TEST *t, const char *alg)
849.   {
850.       int type;

test/evp_test.c:853:9: Taking true branch
851.       MAC_DATA *mdat;
852.   
853.       if (strcmp(alg, "HMAC") == 0) {
               ^
854.           type = EVP_PKEY_HMAC;
855.       } else if (strcmp(alg, "CMAC") == 0) {

test/evp_test.c:854:9: 
852.   
853.       if (strcmp(alg, "HMAC") == 0) {
854. >         type = EVP_PKEY_HMAC;
855.       } else if (strcmp(alg, "CMAC") == 0) {
856.   #ifndef OPENSSL_NO_CMAC

test/evp_test.c:879:5: 
877.           return 0;
878.   
879. >     mdat = OPENSSL_zalloc(sizeof(*mdat));
880.       mdat->type = type;
881.       t->data = mdat;

crypto/mem.c:228:1: start of procedure CRYPTO_zalloc()
  226.   }
  227.   
  228. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
  229.   {
  230.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:230:5: 
  228.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
  229.   {
  230. >     void *ret = CRYPTO_malloc(num, file, line);
  231.   
  232.       FAILTEST();

crypto/mem.c:192:1: start of procedure CRYPTO_malloc()
    190.   #endif
    191.   
    192. > void *CRYPTO_malloc(size_t num, const char *file, int line)
    193.   {
    194.       void *ret = NULL;

crypto/mem.c:194:5: 
    192.   void *CRYPTO_malloc(size_t num, const char *file, int line)
    193.   {
    194. >     void *ret = NULL;
    195.   
    196.       INCREMENT(malloc_count);

crypto/mem.c:197:9: Taking true branch
    195.   
    196.       INCREMENT(malloc_count);
    197.       if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)
                   ^
    198.           return malloc_impl(num, file, line);
    199.   

crypto/mem.c:197:32: Taking true branch
    195.   
    196.       INCREMENT(malloc_count);
    197.       if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)
                                          ^
    198.           return malloc_impl(num, file, line);
    199.   

crypto/mem.c:198:9: Skipping __function_pointer__(): unresolved function pointer
    196.       INCREMENT(malloc_count);
    197.       if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)
    198.           return malloc_impl(num, file, line);
                   ^
    199.   
    200.       if (num == 0)

crypto/mem.c:226:1: return from a call to CRYPTO_malloc
    224.   
    225.       return ret;
    226. > }
    227.   
    228.   void *CRYPTO_zalloc(size_t num, const char *file, int line)

crypto/mem.c:233:9: Taking false branch
  231.   
  232.       FAILTEST();
  233.       if (ret != NULL)
                 ^
  234.           memset(ret, 0, num);
  235.       return ret;

crypto/mem.c:235:5: 
  233.       if (ret != NULL)
  234.           memset(ret, 0, num);
  235. >     return ret;
  236.   }
  237.   

crypto/mem.c:236:1: return from a call to CRYPTO_zalloc
  234.           memset(ret, 0, num);
  235.       return ret;
  236. > }
  237.   
  238.   void *CRYPTO_realloc(void *str, size_t num, const char *file, int line)

test/evp_test.c:880:5: 
878.   
879.       mdat = OPENSSL_zalloc(sizeof(*mdat));
880. >     mdat->type = type;
881.       t->data = mdat;
882.       return 1;

static int mac_test_init(EVP_TEST *t, const char *alg)
{
    int type;
    MAC_DATA *mdat;
    if (strcmp(alg, "HMAC") == 0) {
        type = EVP_PKEY_HMAC;
    } else if (strcmp(alg, "CMAC") == 0) {
#ifndef OPENSSL_NO_CMAC
        type = EVP_PKEY_CMAC;
#else
        t->skip = 1;
        return 1;
#endif
    } else if (strcmp(alg, "Poly1305") == 0) {
#ifndef OPENSSL_NO_POLY1305
        type = EVP_PKEY_POLY1305;
#else
        t->skip = 1;
        return 1;
#endif
    } else if (strcmp(alg, "SipHash") == 0) {
#ifndef OPENSSL_NO_SIPHASH
        type = EVP_PKEY_SIPHASH;
#else
        t->skip = 1;
        return 1;
#endif
    } else
        return 0;
    mdat = OPENSSL_zalloc(sizeof(*mdat));
    mdat->type = type;
    t->data = mdat;
    return 1;
}
['static int mac_test_init(EVP_TEST *t, const char *alg)\n{\n    int type;\n    MAC_DATA *mdat;\n    if (strcmp(alg, "HMAC") == 0) {\n        type = EVP_PKEY_HMAC;\n    } else if (strcmp(alg, "CMAC") == 0) {\n#ifndef OPENSSL_NO_CMAC\n        type = EVP_PKEY_CMAC;\n#else\n        t->skip = 1;\n        return 1;\n#endif\n    } else if (strcmp(alg, "Poly1305") == 0) {\n#ifndef OPENSSL_NO_POLY1305\n        type = EVP_PKEY_POLY1305;\n#else\n        t->skip = 1;\n        return 1;\n#endif\n    } else if (strcmp(alg, "SipHash") == 0) {\n#ifndef OPENSSL_NO_SIPHASH\n        type = EVP_PKEY_SIPHASH;\n#else\n        t->skip = 1;\n        return 1;\n#endif\n    } else\n        return 0;\n    mdat = OPENSSL_zalloc(sizeof(*mdat));\n    mdat->type = type;\n    t->data = mdat;\n    return 1;\n}', 'void *CRYPTO_zalloc(size_t num, const char *file, int line)\n{\n    void *ret = CRYPTO_malloc(num, file, line);\n    FAILTEST();\n    if (ret != NULL)\n        memset(ret, 0, num);\n    return ret;\n}', 'void *CRYPTO_malloc(size_t num, const char *file, int line)\n{\n    void *ret = NULL;\n    INCREMENT(malloc_count);\n    if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)\n        return malloc_impl(num, file, line);\n    if (num == 0)\n        return NULL;\n    FAILTEST();\n    if (allow_customize) {\n        allow_customize = 0;\n    }\n#ifndef OPENSSL_NO_CRYPTO_MDEBUG\n    if (call_malloc_debug) {\n        CRYPTO_mem_debug_malloc(NULL, num, 0, file, line);\n        ret = malloc(num);\n        CRYPTO_mem_debug_malloc(ret, num, 1, file, line);\n    } else {\n        ret = malloc(num);\n    }\n#else\n    (void)(file); (void)(line);\n    ret = malloc(num);\n#endif\n    return ret;\n}']