crypto/err/err.c:870: error: NULL_DEREFERENCE
  pointer `es` last assigned on line 868 could be null and is dereferenced at line 870, column 9.
Showing all 34 steps of the trace


crypto/err/err.c:864:1: start of procedure ERR_set_mark()
862.   }
863.   
864. > int ERR_set_mark(void)
865.   {
866.       ERR_STATE *es;

crypto/err/err.c:868:5: 
866.       ERR_STATE *es;
867.   
868. >     es = ERR_get_state();
869.   
870.       if (es->bottom == es->top)

crypto/err/err.c:770:1: start of procedure ERR_get_state()
  768.   }
  769.   
  770. > ERR_STATE *ERR_get_state(void)
  771.   {
  772.       ERR_STATE *state = NULL;

crypto/err/err.c:772:5: 
  770.   ERR_STATE *ERR_get_state(void)
  771.   {
  772. >     ERR_STATE *state = NULL;
  773.   
  774.       CRYPTO_THREAD_run_once(&err_init, err_do_init);

crypto/err/err.c:774:5: 
  772.       ERR_STATE *state = NULL;
  773.   
  774. >     CRYPTO_THREAD_run_once(&err_init, err_do_init);
  775.   
  776.       state = CRYPTO_THREAD_get_local(&err_thread_local);

crypto/threads_pthread.c:104:1: start of procedure CRYPTO_THREAD_run_once()
    102.   }
    103.   
    104. > int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
    105.   {
    106.       if (pthread_once(once, init) != 0)

crypto/threads_pthread.c:106:9: Taking true branch
    104.   int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))
    105.   {
    106.       if (pthread_once(once, init) != 0)
                   ^
    107.           return 0;
    108.   

crypto/threads_pthread.c:107:9: 
    105.   {
    106.       if (pthread_once(once, init) != 0)
    107. >         return 0;
    108.   
    109.       return 1;

crypto/threads_pthread.c:110:1: return from a call to CRYPTO_THREAD_run_once
    108.   
    109.       return 1;
    110. > }
    111.   
    112.   int CRYPTO_THREAD_init_local(CRYPTO_THREAD_LOCAL *key, void (*cleanup)(void *))

crypto/err/err.c:776:5: 
  774.       CRYPTO_THREAD_run_once(&err_init, err_do_init);
  775.   
  776. >     state = CRYPTO_THREAD_get_local(&err_thread_local);
  777.   
  778.       if (state == NULL) {

crypto/threads_pthread.c:120:1: start of procedure CRYPTO_THREAD_get_local()
    118.   }
    119.   
    120. > void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key)
    121.   {
    122.       return pthread_getspecific(*key);

crypto/threads_pthread.c:122:5: Skipping pthread_getspecific(): method has no implementation
    120.   void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key)
    121.   {
    122.       return pthread_getspecific(*key);
               ^
    123.   }
    124.   

crypto/threads_pthread.c:123:1: return from a call to CRYPTO_THREAD_get_local
    121.   {
    122.       return pthread_getspecific(*key);
    123. > }
    124.   
    125.   int CRYPTO_THREAD_set_local(CRYPTO_THREAD_LOCAL *key, void *val)

crypto/err/err.c:778:9: Taking true branch
  776.       state = CRYPTO_THREAD_get_local(&err_thread_local);
  777.   
  778.       if (state == NULL) {
                 ^
  779.           state = OPENSSL_zalloc(sizeof(*state));
  780.           if (state == NULL)

crypto/err/err.c:779:9: 
  777.   
  778.       if (state == NULL) {
  779. >         state = OPENSSL_zalloc(sizeof(*state));
  780.           if (state == NULL)
  781.               return NULL;

crypto/mem.c:146:1: start of procedure CRYPTO_zalloc()
    144.   }
    145.   
    146. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
    147.   {
    148.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:148:5: 
    146.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
    147.   {
    148. >     void *ret = CRYPTO_malloc(num, file, line);
    149.   
    150.       if (ret != NULL)

crypto/mem.c:119:1: start of procedure CRYPTO_malloc()
      117.   }
      118.   
      119. > void *CRYPTO_malloc(size_t num, const char *file, int line)
      120.   {
      121.       void *ret = NULL;

crypto/mem.c:121:5: 
      119.   void *CRYPTO_malloc(size_t num, const char *file, int line)
      120.   {
      121. >     void *ret = NULL;
      122.   
      123.       if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)

crypto/mem.c:123:9: Taking false branch
      121.       void *ret = NULL;
      122.   
      123.       if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)
                     ^
      124.           return malloc_impl(num, file, line);
      125.   

crypto/mem.c:126:9: Taking false branch
      124.           return malloc_impl(num, file, line);
      125.   
      126.       if (num <= 0)
                     ^
      127.           return NULL;
      128.   

crypto/mem.c:129:5: 
      127.           return NULL;
      128.   
      129. >     allow_customize = 0;
      130.   #ifndef OPENSSL_NO_CRYPTO_MDEBUG
      131.       if (call_malloc_debug) {

crypto/mem.c:139:5: 
      137.       }
      138.   #else
      139. >     osslargused(file); osslargused(line);
      140.       ret = malloc(num);
      141.   #endif

crypto/mem.c:139:24: 
      137.       }
      138.   #else
      139. >     osslargused(file); osslargused(line);
      140.       ret = malloc(num);
      141.   #endif

crypto/mem.c:140:5: 
      138.   #else
      139.       osslargused(file); osslargused(line);
      140. >     ret = malloc(num);
      141.   #endif
      142.   

crypto/mem.c:143:5: 
      141.   #endif
      142.   
      143. >     return ret;
      144.   }
      145.   

crypto/mem.c:144:1: return from a call to CRYPTO_malloc
      142.   
      143.       return ret;
      144. > }
      145.   
      146.   void *CRYPTO_zalloc(size_t num, const char *file, int line)

crypto/mem.c:150:9: Taking false branch
    148.       void *ret = CRYPTO_malloc(num, file, line);
    149.   
    150.       if (ret != NULL)
                   ^
    151.           memset(ret, 0, num);
    152.       return ret;

crypto/mem.c:152:5: 
    150.       if (ret != NULL)
    151.           memset(ret, 0, num);
    152. >     return ret;
    153.   }
    154.   

crypto/mem.c:153:1: return from a call to CRYPTO_zalloc
    151.           memset(ret, 0, num);
    152.       return ret;
    153. > }
    154.   
    155.   void *CRYPTO_realloc(void *str, size_t num, const char *file, int line)

crypto/err/err.c:780:13: Taking true branch
  778.       if (state == NULL) {
  779.           state = OPENSSL_zalloc(sizeof(*state));
  780.           if (state == NULL)
                     ^
  781.               return NULL;
  782.   

crypto/err/err.c:781:13: 
  779.           state = OPENSSL_zalloc(sizeof(*state));
  780.           if (state == NULL)
  781. >             return NULL;
  782.   
  783.           if (!CRYPTO_THREAD_set_local(&err_thread_local, state)) {

crypto/err/err.c:794:1: return from a call to ERR_get_state
  792.   
  793.       return state;
  794. > }
  795.   
  796.   int ERR_get_next_error_library(void)

crypto/err/err.c:870:9: 
868.       es = ERR_get_state();
869.   
870. >     if (es->bottom == es->top)
871.           return 0;
872.       es->err_flags[es->top] |= ERR_FLAG_MARK;

int ERR_set_mark(void)
{
    ERR_STATE *es;
    es = ERR_get_state();
    if (es->bottom == es->top)
        return 0;
    es->err_flags[es->top] |= ERR_FLAG_MARK;
    return 1;
}
['int ERR_set_mark(void)\n{\n    ERR_STATE *es;\n    es = ERR_get_state();\n    if (es->bottom == es->top)\n        return 0;\n    es->err_flags[es->top] |= ERR_FLAG_MARK;\n    return 1;\n}', 'ERR_STATE *ERR_get_state(void)\n{\n    ERR_STATE *state = NULL;\n    CRYPTO_THREAD_run_once(&err_init, err_do_init);\n    state = CRYPTO_THREAD_get_local(&err_thread_local);\n    if (state == NULL) {\n        state = OPENSSL_zalloc(sizeof(*state));\n        if (state == NULL)\n            return NULL;\n        if (!CRYPTO_THREAD_set_local(&err_thread_local, state)) {\n            ERR_STATE_free(state);\n            return NULL;\n        }\n        OPENSSL_init_crypto(OPENSSL_INIT_LOAD_CRYPTO_STRINGS, NULL);\n        ossl_init_thread_start(OPENSSL_INIT_THREAD_ERR_STATE);\n    }\n    return state;\n}', 'int CRYPTO_THREAD_run_once(CRYPTO_ONCE *once, void (*init)(void))\n{\n    if (pthread_once(once, init) != 0)\n        return 0;\n    return 1;\n}', 'void *CRYPTO_THREAD_get_local(CRYPTO_THREAD_LOCAL *key)\n{\n    return pthread_getspecific(*key);\n}', 'void *CRYPTO_zalloc(size_t num, const char *file, int line)\n{\n    void *ret = CRYPTO_malloc(num, file, line);\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    if (malloc_impl != NULL && malloc_impl != CRYPTO_malloc)\n        return malloc_impl(num, file, line);\n    if (num <= 0)\n        return NULL;\n    allow_customize = 0;\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    osslargused(file); osslargused(line);\n    ret = malloc(num);\n#endif\n    return ret;\n}']