crypto/bn/bn_mod.c:256: error: MEMORY_LEAK
  memory dynamically allocated by call to `BN_dup()` at line 247, column 17 is not reachable after line 256, column 5.
Showing all 61 steps of the trace


crypto/bn/bn_mod.c:237:1: start of procedure BN_mod_lshift()
235.   }
236.   
237. > int BN_mod_lshift(BIGNUM *r, const BIGNUM *a, int n, const BIGNUM *m,
238.                     BN_CTX *ctx)
239.   {

crypto/bn/bn_mod.c:240:5: 
238.                     BN_CTX *ctx)
239.   {
240. >     BIGNUM *abs_m = NULL;
241.       int ret;
242.   

crypto/bn/bn_mod.c:243:10: 
241.       int ret;
242.   
243. >     if (!BN_nnmod(r, a, m, ctx))
244.           return 0;
245.   

crypto/bn/bn_mod.c:118:1: start of procedure BN_nnmod()
  116.   #include "bn_lcl.h"
  117.   
  118. > int BN_nnmod(BIGNUM *r, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx)
  119.   {
  120.       /*

crypto/bn/bn_mod.c:125:11: Taking false branch
  123.        */
  124.   
  125.       if (!(BN_mod(r, m, d, ctx)))
                   ^
  126.           return 0;
  127.       if (!r->neg)

crypto/bn/bn_mod.c:127:10: Taking true branch
  125.       if (!(BN_mod(r, m, d, ctx)))
  126.           return 0;
  127.       if (!r->neg)
                  ^
  128.           return 1;
  129.       /* now   -|d| < r < 0,  so we have to set  r := r + |d| */

crypto/bn/bn_mod.c:128:9: 
  126.           return 0;
  127.       if (!r->neg)
  128. >         return 1;
  129.       /* now   -|d| < r < 0,  so we have to set  r := r + |d| */
  130.       return (d->neg ? BN_sub : BN_add) (r, r, d);

crypto/bn/bn_mod.c:131:1: return from a call to BN_nnmod
  129.       /* now   -|d| < r < 0,  so we have to set  r := r + |d| */
  130.       return (d->neg ? BN_sub : BN_add) (r, r, d);
  131. > }
  132.   
  133.   int BN_mod_add(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m,

crypto/bn/bn_mod.c:243:10: Taking false branch
241.       int ret;
242.   
243.       if (!BN_nnmod(r, a, m, ctx))
                ^
244.           return 0;
245.   

crypto/bn/bn_mod.c:246:9: Taking true branch
244.           return 0;
245.   
246.       if (m->neg) {
               ^
247.           abs_m = BN_dup(m);
248.           if (abs_m == NULL)

crypto/bn/bn_mod.c:247:9: 
245.   
246.       if (m->neg) {
247. >         abs_m = BN_dup(m);
248.           if (abs_m == NULL)
249.               return 0;

crypto/bn/bn_lib.c:400:1: start of procedure BN_dup()
  398.   }
  399.   
  400. > BIGNUM *BN_dup(const BIGNUM *a)
  401.   {
  402.       BIGNUM *t;

crypto/bn/bn_lib.c:404:9: Taking false branch
  402.       BIGNUM *t;
  403.   
  404.       if (a == NULL)
                 ^
  405.           return NULL;
  406.       bn_check_top(a);

crypto/bn/bn_lib.c:408:9: 
  406.       bn_check_top(a);
  407.   
  408. >     t = BN_get_flags(a, BN_FLG_SECURE) ? BN_secure_new() : BN_new();
  409.       if (t == NULL)
  410.           return NULL;

crypto/bn/bn_lib.c:1041:1: start of procedure BN_get_flags()
    1039.   }
    1040.   
    1041. > int BN_get_flags(const BIGNUM *b, int n)
    1042.   {
    1043.       return b->flags & n;

crypto/bn/bn_lib.c:1043:5: 
    1041.   int BN_get_flags(const BIGNUM *b, int n)
    1042.   {
    1043. >     return b->flags & n;
    1044.   }
    1045.   

crypto/bn/bn_lib.c:1044:1: return from a call to BN_get_flags
    1042.   {
    1043.       return b->flags & n;
    1044. > }
    1045.   
    1046.   /* Populate a BN_GENCB structure with an "old"-style callback */

crypto/bn/bn_lib.c:408:9: Condition is false
  406.       bn_check_top(a);
  407.   
  408.       t = BN_get_flags(a, BN_FLG_SECURE) ? BN_secure_new() : BN_new();
                 ^
  409.       if (t == NULL)
  410.           return NULL;

crypto/bn/bn_lib.c:276:1: start of procedure BN_new()
    274.   }
    275.   
    276. > BIGNUM *BN_new(void)
    277.   {
    278.       BIGNUM *ret;

crypto/bn/bn_lib.c:280:9: 
    278.       BIGNUM *ret;
    279.   
    280. >     if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL) {
    281.           BNerr(BN_F_BN_NEW, ERR_R_MALLOC_FAILURE);
    282.           return (NULL);

crypto/mem.c:156:1: start of procedure CRYPTO_zalloc()
      154.   }
      155.   
      156. > void *CRYPTO_zalloc(size_t num, const char *file, int line)
      157.   {
      158.       void *ret = CRYPTO_malloc(num, file, line);

crypto/mem.c:158:5: 
      156.   void *CRYPTO_zalloc(size_t num, const char *file, int line)
      157.   {
      158. >     void *ret = CRYPTO_malloc(num, file, line);
      159.   
      160.       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 (num <= 0)

crypto/mem.c:123:9: Taking false branch
        121.       void *ret = NULL;
        122.   
        123.       if (num <= 0)
                       ^
        124.           return NULL;
        125.   

crypto/mem.c:126:5: 
        124.           return NULL;
        125.   
        126. >     allow_customize = 0;
        127.   #ifndef OPENSSL_NO_CRYPTO_MDEBUG
        128.       if (call_malloc_debug) {

crypto/mem.c:136:5: 
        134.       }
        135.   #else
        136. >     (void)file;
        137.       (void)line;
        138.       ret = malloc(num);

crypto/mem.c:137:5: 
        135.   #else
        136.       (void)file;
        137. >     (void)line;
        138.       ret = malloc(num);
        139.   #endif

crypto/mem.c:138:5: 
        136.       (void)file;
        137.       (void)line;
        138. >     ret = malloc(num);
        139.   #endif
        140.   

crypto/mem.c:153:5: 
        151.   #endif
        152.   
        153. >     return ret;
        154.   }
        155.   

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

crypto/mem.c:160:9: Taking true branch
      158.       void *ret = CRYPTO_malloc(num, file, line);
      159.   
      160.       if (ret != NULL)
                     ^
      161.           memset(ret, 0, num);
      162.       return ret;

crypto/mem.c:161:9: 
      159.   
      160.       if (ret != NULL)
      161. >         memset(ret, 0, num);
      162.       return ret;
      163.   }

crypto/mem.c:162:5: 
      160.       if (ret != NULL)
      161.           memset(ret, 0, num);
      162. >     return ret;
      163.   }
      164.   

crypto/mem.c:163:1: return from a call to CRYPTO_zalloc
      161.           memset(ret, 0, num);
      162.       return ret;
      163. > }
      164.   
      165.   void *CRYPTO_realloc(void *str, size_t num, const char *file, int line)

crypto/bn/bn_lib.c:280:9: Taking false branch
    278.       BIGNUM *ret;
    279.   
    280.       if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL) {
                   ^
    281.           BNerr(BN_F_BN_NEW, ERR_R_MALLOC_FAILURE);
    282.           return (NULL);

crypto/bn/bn_lib.c:284:5: 
    282.           return (NULL);
    283.       }
    284. >     ret->flags = BN_FLG_MALLOCED;
    285.       bn_check_top(ret);
    286.       return (ret);

crypto/bn/bn_lib.c:286:5: 
    284.       ret->flags = BN_FLG_MALLOCED;
    285.       bn_check_top(ret);
    286. >     return (ret);
    287.   }
    288.   

crypto/bn/bn_lib.c:287:1: return from a call to BN_new
    285.       bn_check_top(ret);
    286.       return (ret);
    287. > }
    288.   
    289.    BIGNUM *BN_secure_new(void)

crypto/bn/bn_lib.c:408:5: 
  406.       bn_check_top(a);
  407.   
  408. >     t = BN_get_flags(a, BN_FLG_SECURE) ? BN_secure_new() : BN_new();
  409.       if (t == NULL)
  410.           return NULL;

crypto/bn/bn_lib.c:409:9: Taking false branch
  407.   
  408.       t = BN_get_flags(a, BN_FLG_SECURE) ? BN_secure_new() : BN_new();
  409.       if (t == NULL)
                 ^
  410.           return NULL;
  411.       if (!BN_copy(t, a)) {

crypto/bn/bn_lib.c:411:10: Taking false branch
  409.       if (t == NULL)
  410.           return NULL;
  411.       if (!BN_copy(t, a)) {
                  ^
  412.           BN_free(t);
  413.           return NULL;

crypto/bn/bn_lib.c:416:5: 
  414.       }
  415.       bn_check_top(t);
  416. >     return t;
  417.   }
  418.   

crypto/bn/bn_lib.c:417:1: return from a call to BN_dup
  415.       bn_check_top(t);
  416.       return t;
  417. > }
  418.   
  419.   BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)

crypto/bn/bn_mod.c:248:13: Taking false branch
246.       if (m->neg) {
247.           abs_m = BN_dup(m);
248.           if (abs_m == NULL)
                   ^
249.               return 0;
250.           abs_m->neg = 0;

crypto/bn/bn_mod.c:250:9: 
248.           if (abs_m == NULL)
249.               return 0;
250. >         abs_m->neg = 0;
251.       }
252.   

crypto/bn/bn_mod.c:253:41: Condition is true
251.       }
252.   
253.       ret = BN_mod_lshift_quick(r, r, n, (abs_m ? abs_m : m));
                                               ^
254.       bn_check_top(r);
255.   

crypto/bn/bn_mod.c:253:5: Skipping BN_mod_lshift_quick(): empty list of specs
251.       }
252.   
253.       ret = BN_mod_lshift_quick(r, r, n, (abs_m ? abs_m : m));
           ^
254.       bn_check_top(r);
255.   

crypto/bn/bn_mod.c:256:5: 
254.       bn_check_top(r);
255.   
256. >     BN_free(abs_m);
257.       return ret;
258.   }

crypto/bn/bn_lib.c:251:1: start of procedure BN_free()
  249.   }
  250.   
  251. > void BN_free(BIGNUM *a)
  252.   {
  253.       if (a == NULL)

crypto/bn/bn_lib.c:253:9: Taking false branch
  251.   void BN_free(BIGNUM *a)
  252.   {
  253.       if (a == NULL)
                 ^
  254.           return;
  255.       bn_check_top(a);

crypto/bn/bn_lib.c:256:10: 
  254.           return;
  255.       bn_check_top(a);
  256. >     if (!BN_get_flags(a, BN_FLG_STATIC_DATA))
  257.           bn_free_d(a);
  258.       if (a->flags & BN_FLG_MALLOCED)

crypto/bn/bn_lib.c:1041:1: start of procedure BN_get_flags()
    1039.   }
    1040.   
    1041. > int BN_get_flags(const BIGNUM *b, int n)
    1042.   {
    1043.       return b->flags & n;

crypto/bn/bn_lib.c:1043:5: 
    1041.   int BN_get_flags(const BIGNUM *b, int n)
    1042.   {
    1043. >     return b->flags & n;
    1044.   }
    1045.   

crypto/bn/bn_lib.c:1044:1: return from a call to BN_get_flags
    1042.   {
    1043.       return b->flags & n;
    1044. > }
    1045.   
    1046.   /* Populate a BN_GENCB structure with an "old"-style callback */

crypto/bn/bn_lib.c:256:10: Taking false branch
  254.           return;
  255.       bn_check_top(a);
  256.       if (!BN_get_flags(a, BN_FLG_STATIC_DATA))
                  ^
  257.           bn_free_d(a);
  258.       if (a->flags & BN_FLG_MALLOCED)

crypto/bn/bn_lib.c:258:9: Taking false branch
  256.       if (!BN_get_flags(a, BN_FLG_STATIC_DATA))
  257.           bn_free_d(a);
  258.       if (a->flags & BN_FLG_MALLOCED)
                 ^
  259.           OPENSSL_free(a);
  260.       else {

crypto/bn/bn_lib.c:262:9: 
  260.       else {
  261.   #if OPENSSL_API_COMPAT < 0x00908000L
  262. >         a->flags |= BN_FLG_FREE;
  263.   #endif
  264.           a->d = NULL;

crypto/bn/bn_lib.c:264:9: 
  262.           a->flags |= BN_FLG_FREE;
  263.   #endif
  264. >         a->d = NULL;
  265.       }
  266.   }

crypto/bn/bn_lib.c:258:5: 
  256.       if (!BN_get_flags(a, BN_FLG_STATIC_DATA))
  257.           bn_free_d(a);
  258. >     if (a->flags & BN_FLG_MALLOCED)
  259.           OPENSSL_free(a);
  260.       else {

crypto/bn/bn_lib.c:266:1: return from a call to BN_free
  264.           a->d = NULL;
  265.       }
  266. > }
  267.   
  268.   void bn_init(BIGNUM *a)
