crypto/x509/x509_lu.c:535: error: NULL_DEREFERENCE
  pointer `obj` last assigned on line 534 could be null and is dereferenced at line 535, column 13.
Showing all 25 steps of the trace


crypto/x509/x509_lu.c:500:1: start of procedure X509_STORE_CTX_get1_certs()
498.   }
499.   
500. > STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
501.   {
502.       int i, idx, cnt;

crypto/x509/x509_lu.c:503:5: 
501.   {
502.       int i, idx, cnt;
503. >     STACK_OF(X509) *sk = NULL;
504.       X509 *x;
505.       X509_OBJECT *obj;

crypto/x509/x509_lu.c:507:5: 
505.       X509_OBJECT *obj;
506.   
507. >     CRYPTO_THREAD_write_lock(ctx->ctx->lock);
508.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
509.       if (idx < 0) {

crypto/threads_pthread.c:36:1: start of procedure CRYPTO_THREAD_write_lock()
  34.   }
  35.   
  36. > int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
  37.   {
  38.       if (pthread_rwlock_wrlock(lock) != 0)

crypto/threads_pthread.c:38:9: Taking true branch
  36.   int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
  37.   {
  38.       if (pthread_rwlock_wrlock(lock) != 0)
                ^
  39.           return 0;
  40.   

crypto/threads_pthread.c:39:9: 
  37.   {
  38.       if (pthread_rwlock_wrlock(lock) != 0)
  39. >         return 0;
  40.   
  41.       return 1;

crypto/threads_pthread.c:42:1: return from a call to CRYPTO_THREAD_write_lock
  40.   
  41.       return 1;
  42. > }
  43.   
  44.   int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock)

crypto/x509/x509_lu.c:508:5: Skipping x509_object_idx_cnt(): empty list of specs
506.   
507.       CRYPTO_THREAD_write_lock(ctx->ctx->lock);
508.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
           ^
509.       if (idx < 0) {
510.           /*

crypto/x509/x509_lu.c:509:9: Taking false branch
507.       CRYPTO_THREAD_write_lock(ctx->ctx->lock);
508.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
509.       if (idx < 0) {
               ^
510.           /*
511.            * Nothing found in cache: do lookup to possibly add new objects to

crypto/x509/x509_lu.c:532:5: 
530.       }
531.   
532. >     sk = sk_X509_new_null();
533.       for (i = 0; i < cnt; i++, idx++) {
534.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);

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

crypto/stack/stack.c:92:1: start of procedure OPENSSL_sk_new_null()
    90.   }
    91.   
    92. > OPENSSL_STACK *OPENSSL_sk_new_null(void)
    93.   {
    94.       return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);

crypto/stack/stack.c:94:5: Skipping OPENSSL_sk_new(): empty list of specs
    92.   OPENSSL_STACK *OPENSSL_sk_new_null(void)
    93.   {
    94.       return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);
              ^
    95.   }
    96.   

crypto/stack/stack.c:95:1: return from a call to OPENSSL_sk_new_null
    93.   {
    94.       return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);
    95. > }
    96.   
    97.   OPENSSL_STACK *OPENSSL_sk_new(OPENSSL_sk_compfunc c)

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

crypto/x509/x509_lu.c:533:10: 
531.   
532.       sk = sk_X509_new_null();
533. >     for (i = 0; i < cnt; i++, idx++) {
534.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
535.           x = obj->data.x509;

crypto/x509/x509_lu.c:533:17: Loop condition is true. Entering loop body
531.   
532.       sk = sk_X509_new_null();
533.       for (i = 0; i < cnt; i++, idx++) {
                       ^
534.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
535.           x = obj->data.x509;

crypto/x509/x509_lu.c:534:9: 
532.       sk = sk_X509_new_null();
533.       for (i = 0; i < cnt; i++, idx++) {
534. >         obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
535.           x = obj->data.x509;
536.           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:272:1: start of procedure OPENSSL_sk_value()
    270.   }
    271.   
    272. > void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    273.   {
    274.       if (st == NULL || i < 0 || i >= st->num)

crypto/stack/stack.c:274:9: Taking true branch
    272.   void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    273.   {
    274.       if (st == NULL || i < 0 || i >= st->num)
                   ^
    275.           return NULL;
    276.       return st->data[i];

crypto/stack/stack.c:275:9: 
    273.   {
    274.       if (st == NULL || i < 0 || i >= st->num)
    275. >         return NULL;
    276.       return st->data[i];
    277.   }

crypto/stack/stack.c:277:1: return from a call to OPENSSL_sk_value
    275.           return NULL;
    276.       return st->data[i];
    277. > }
    278.   
    279.   void *OPENSSL_sk_set(OPENSSL_STACK *st, int i, void *value)

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:535:9: 
533.       for (i = 0; i < cnt; i++, idx++) {
534.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
535. >         x = obj->data.x509;
536.           X509_up_ref(x);
537.           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;
    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    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    if (pthread_rwlock_wrlock(lock) != 0)\n        return 0;\n    return 1;\n}', 'DEFINE_STACK_OF(X509)', 'OPENSSL_STACK *OPENSSL_sk_new_null(void)\n{\n    return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);\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 st->data[i];\n}']