crypto/x509/x509_lu.c:523: error: NULL_DEREFERENCE
  pointer `obj` last assigned on line 522 could be null and is dereferenced at line 523, column 13.
Showing all 26 steps of the trace


crypto/x509/x509_lu.c:485:1: start of procedure X509_STORE_CTX_get1_certs()
483.   }
484.   
485. > STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
486.   {
487.       int i, idx, cnt;

crypto/x509/x509_lu.c:488:5: 
486.   {
487.       int i, idx, cnt;
488. >     STACK_OF(X509) *sk = NULL;
489.       X509 *x;
490.       X509_OBJECT *obj;

crypto/x509/x509_lu.c:492:9: Taking false branch
490.       X509_OBJECT *obj;
491.   
492.       if (ctx->ctx == NULL)
               ^
493.           return NULL;
494.   

crypto/x509/x509_lu.c:495:5: 
493.           return NULL;
494.   
495. >     CRYPTO_THREAD_write_lock(ctx->ctx->lock);
496.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
497.       if (idx < 0) {

crypto/threads_pthread.c:70:1: start of procedure CRYPTO_THREAD_write_lock()
  68.   }
  69.   
  70. > int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
  71.   {
  72.   # ifdef USE_RWLOCK

crypto/threads_pthread.c:73:9: Taking true branch
  71.   {
  72.   # ifdef USE_RWLOCK
  73.       if (pthread_rwlock_wrlock(lock) != 0)
                ^
  74.           return 0;
  75.   # else

crypto/threads_pthread.c:74:9: 
  72.   # ifdef USE_RWLOCK
  73.       if (pthread_rwlock_wrlock(lock) != 0)
  74. >         return 0;
  75.   # else
  76.       if (pthread_mutex_lock(lock) != 0)

crypto/threads_pthread.c:81:1: return from a call to CRYPTO_THREAD_write_lock
  79.   
  80.       return 1;
  81. > }
  82.   
  83.   int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock)

crypto/x509/x509_lu.c:496:5: Skipping x509_object_idx_cnt(): empty list of specs
494.   
495.       CRYPTO_THREAD_write_lock(ctx->ctx->lock);
496.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
           ^
497.       if (idx < 0) {
498.           /*

crypto/x509/x509_lu.c:497:9: Taking false branch
495.       CRYPTO_THREAD_write_lock(ctx->ctx->lock);
496.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
497.       if (idx < 0) {
               ^
498.           /*
499.            * Nothing found in cache: do lookup to possibly add new objects to

crypto/x509/x509_lu.c:520:5: 
518.       }
519.   
520. >     sk = sk_X509_new_null();
521.       for (i = 0; i < cnt; i++, idx++) {
522.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);

include/openssl/x509.h:99:1: start of procedure sk_X509_new_null()
  97.   typedef struct x509_cinf_st X509_CINF;
  98.   
  99. > DEFINE_STACK_OF(X509)
  100.   
  101.   /* This is used for a table of trust checking functions */

crypto/stack/stack.c:112:1: start of procedure OPENSSL_sk_new_null()
    110.   }
    111.   
    112. > OPENSSL_STACK *OPENSSL_sk_new_null(void)
    113.   {
    114.       return OPENSSL_sk_new_reserve(NULL, 0);

crypto/stack/stack.c:114:5: Skipping OPENSSL_sk_new_reserve(): empty list of specs
    112.   OPENSSL_STACK *OPENSSL_sk_new_null(void)
    113.   {
    114.       return OPENSSL_sk_new_reserve(NULL, 0);
               ^
    115.   }
    116.   

crypto/stack/stack.c:115:1: return from a call to OPENSSL_sk_new_null
    113.   {
    114.       return OPENSSL_sk_new_reserve(NULL, 0);
    115. > }
    116.   
    117.   OPENSSL_STACK *OPENSSL_sk_new(OPENSSL_sk_compfunc c)

include/openssl/x509.h:99:1: return from a call to sk_X509_new_null
  97.   typedef struct x509_cinf_st X509_CINF;
  98.   
  99. > DEFINE_STACK_OF(X509)
  100.   
  101.   /* This is used for a table of trust checking functions */

crypto/x509/x509_lu.c:521:10: 
519.   
520.       sk = sk_X509_new_null();
521. >     for (i = 0; i < cnt; i++, idx++) {
522.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
523.           x = obj->data.x509;

crypto/x509/x509_lu.c:521:17: Loop condition is true. Entering loop body
519.   
520.       sk = sk_X509_new_null();
521.       for (i = 0; i < cnt; i++, idx++) {
                       ^
522.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
523.           x = obj->data.x509;

crypto/x509/x509_lu.c:522:9: 
520.       sk = sk_X509_new_null();
521.       for (i = 0; i < cnt; i++, idx++) {
522. >         obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
523.           x = obj->data.x509;
524.           X509_up_ref(x);

include/openssl/x509_vfy.h:58:1: start of procedure sk_X509_OBJECT_value()
  56.   
  57.   DEFINE_STACK_OF(X509_LOOKUP)
  58. > DEFINE_STACK_OF(X509_OBJECT)
  59.   DEFINE_STACK_OF(X509_VERIFY_PARAM)
  60.   

crypto/stack/stack.c:381:1: start of procedure OPENSSL_sk_value()
    379.   }
    380.   
    381. > void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    382.   {
    383.       if (st == NULL || i < 0 || i >= st->num)

crypto/stack/stack.c:383:9: Taking true branch
    381.   void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    382.   {
    383.       if (st == NULL || i < 0 || i >= st->num)
                   ^
    384.           return NULL;
    385.       return (void *)st->data[i];

crypto/stack/stack.c:384:9: 
    382.   {
    383.       if (st == NULL || i < 0 || i >= st->num)
    384. >         return NULL;
    385.       return (void *)st->data[i];
    386.   }

crypto/stack/stack.c:386:1: return from a call to OPENSSL_sk_value
    384.           return NULL;
    385.       return (void *)st->data[i];
    386. > }
    387.   
    388.   void *OPENSSL_sk_set(OPENSSL_STACK *st, int i, const void *data)

include/openssl/x509_vfy.h:58:1: return from a call to sk_X509_OBJECT_value
  56.   
  57.   DEFINE_STACK_OF(X509_LOOKUP)
  58. > DEFINE_STACK_OF(X509_OBJECT)
  59.   DEFINE_STACK_OF(X509_VERIFY_PARAM)
  60.   

crypto/x509/x509_lu.c:523:9: 
521.       for (i = 0; i < cnt; i++, idx++) {
522.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
523. >         x = obj->data.x509;
524.           X509_up_ref(x);
525.           if (!sk_X509_push(sk, x)) {

STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
{
    int i, idx, cnt;
    STACK_OF(X509) *sk = NULL;
    X509 *x;
    X509_OBJECT *obj;
    if (ctx->ctx == NULL)
        return NULL;
    CRYPTO_THREAD_write_lock(ctx->ctx->lock);
    idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
    if (idx < 0) {
        X509_OBJECT *xobj = X509_OBJECT_new();
        CRYPTO_THREAD_unlock(ctx->ctx->lock);
        if (xobj == NULL)
            return NULL;
        if (!X509_STORE_CTX_get_by_subject(ctx, X509_LU_X509, nm, xobj)) {
            X509_OBJECT_free(xobj);
            return NULL;
        }
        X509_OBJECT_free(xobj);
        CRYPTO_THREAD_write_lock(ctx->ctx->lock);
        idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
        if (idx < 0) {
            CRYPTO_THREAD_unlock(ctx->ctx->lock);
            return NULL;
        }
    }
    sk = sk_X509_new_null();
    for (i = 0; i < cnt; i++, idx++) {
        obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
        x = obj->data.x509;
        X509_up_ref(x);
        if (!sk_X509_push(sk, x)) {
            CRYPTO_THREAD_unlock(ctx->ctx->lock);
            X509_free(x);
            sk_X509_pop_free(sk, X509_free);
            return NULL;
        }
    }
    CRYPTO_THREAD_unlock(ctx->ctx->lock);
    return sk;
}
['STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)\n{\n    int i, idx, cnt;\n    STACK_OF(X509) *sk = NULL;\n    X509 *x;\n    X509_OBJECT *obj;\n    if (ctx->ctx == NULL)\n        return NULL;\n    CRYPTO_THREAD_write_lock(ctx->ctx->lock);\n    idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);\n    if (idx < 0) {\n        X509_OBJECT *xobj = X509_OBJECT_new();\n        CRYPTO_THREAD_unlock(ctx->ctx->lock);\n        if (xobj == NULL)\n            return NULL;\n        if (!X509_STORE_CTX_get_by_subject(ctx, X509_LU_X509, nm, xobj)) {\n            X509_OBJECT_free(xobj);\n            return NULL;\n        }\n        X509_OBJECT_free(xobj);\n        CRYPTO_THREAD_write_lock(ctx->ctx->lock);\n        idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);\n        if (idx < 0) {\n            CRYPTO_THREAD_unlock(ctx->ctx->lock);\n            return NULL;\n        }\n    }\n    sk = sk_X509_new_null();\n    for (i = 0; i < cnt; i++, idx++) {\n        obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);\n        x = obj->data.x509;\n        X509_up_ref(x);\n        if (!sk_X509_push(sk, x)) {\n            CRYPTO_THREAD_unlock(ctx->ctx->lock);\n            X509_free(x);\n            sk_X509_pop_free(sk, X509_free);\n            return NULL;\n        }\n    }\n    CRYPTO_THREAD_unlock(ctx->ctx->lock);\n    return sk;\n}', 'int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)\n{\n# ifdef USE_RWLOCK\n    if (pthread_rwlock_wrlock(lock) != 0)\n        return 0;\n# else\n    if (pthread_mutex_lock(lock) != 0)\n        return 0;\n# endif\n    return 1;\n}', 'DEFINE_STACK_OF(X509)', 'OPENSSL_STACK *OPENSSL_sk_new_null(void)\n{\n    return OPENSSL_sk_new_reserve(NULL, 0);\n}', 'void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)\n{\n    if (st == NULL || i < 0 || i >= st->num)\n        return NULL;\n    return (void *)st->data[i];\n}']