crypto/x509/x509_lu.c:517: error: NULL_DEREFERENCE
  pointer `obj` last assigned on line 516 could be null and is dereferenced at line 517, column 13.
Showing all 25 steps of the trace


crypto/x509/x509_lu.c:482:1: start of procedure X509_STORE_CTX_get1_certs()
480.   }
481.   
482. > STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
483.   {
484.       int i, idx, cnt;

crypto/x509/x509_lu.c:485:5: 
483.   {
484.       int i, idx, cnt;
485. >     STACK_OF(X509) *sk = NULL;
486.       X509 *x;
487.       X509_OBJECT *obj;

crypto/x509/x509_lu.c:489:5: 
487.       X509_OBJECT *obj;
488.   
489. >     CRYPTO_THREAD_write_lock(ctx->ctx->lock);
490.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
491.       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:490:5: Skipping x509_object_idx_cnt(): empty list of specs
488.   
489.       CRYPTO_THREAD_write_lock(ctx->ctx->lock);
490.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
           ^
491.       if (idx < 0) {
492.           /*

crypto/x509/x509_lu.c:491:9: Taking false branch
489.       CRYPTO_THREAD_write_lock(ctx->ctx->lock);
490.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
491.       if (idx < 0) {
               ^
492.           /*
493.            * Nothing found in cache: do lookup to possibly add new objects to

crypto/x509/x509_lu.c:514:5: 
512.       }
513.   
514. >     sk = sk_X509_new_null();
515.       for (i = 0; i < cnt; i++, idx++) {
516.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);

include/openssl/x509.h:104:1: start of procedure sk_X509_new_null()
  102.   typedef struct x509_cinf_st X509_CINF;
  103.   
  104. > DEFINE_STACK_OF(X509)
  105.   
  106.   /* This is used for a table of trust checking functions */

crypto/stack/stack.c:97:1: start of procedure OPENSSL_sk_new_null()
    95.   }
    96.   
    97. > OPENSSL_STACK *OPENSSL_sk_new_null(void)
    98.   {
    99.       return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);

crypto/stack/stack.c:99:5: Skipping OPENSSL_sk_new(): empty list of specs
    97.   OPENSSL_STACK *OPENSSL_sk_new_null(void)
    98.   {
    99.       return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);
               ^
    100.   }
    101.   

crypto/stack/stack.c:100:1: return from a call to OPENSSL_sk_new_null
    98.   {
    99.       return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);
    100. > }
    101.   
    102.   OPENSSL_STACK *OPENSSL_sk_new(OPENSSL_sk_compfunc c)

include/openssl/x509.h:104:1: return from a call to sk_X509_new_null
  102.   typedef struct x509_cinf_st X509_CINF;
  103.   
  104. > DEFINE_STACK_OF(X509)
  105.   
  106.   /* This is used for a table of trust checking functions */

crypto/x509/x509_lu.c:515:10: 
513.   
514.       sk = sk_X509_new_null();
515. >     for (i = 0; i < cnt; i++, idx++) {
516.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
517.           x = obj->data.x509;

crypto/x509/x509_lu.c:515:17: Loop condition is true. Entering loop body
513.   
514.       sk = sk_X509_new_null();
515.       for (i = 0; i < cnt; i++, idx++) {
                       ^
516.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
517.           x = obj->data.x509;

crypto/x509/x509_lu.c:516:9: 
514.       sk = sk_X509_new_null();
515.       for (i = 0; i < cnt; i++, idx++) {
516. >         obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
517.           x = obj->data.x509;
518.           X509_up_ref(x);

include/openssl/x509_vfy.h:54:1: start of procedure sk_X509_OBJECT_value()
  52.   
  53.   DEFINE_STACK_OF(X509_LOOKUP)
  54. > DEFINE_STACK_OF(X509_OBJECT)
  55.   DEFINE_STACK_OF(X509_VERIFY_PARAM)
  56.   

crypto/stack/stack.c:277:1: start of procedure OPENSSL_sk_value()
    275.   }
    276.   
    277. > void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    278.   {
    279.       if (st == NULL || i < 0 || i >= st->num)

crypto/stack/stack.c:279:9: Taking true branch
    277.   void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    278.   {
    279.       if (st == NULL || i < 0 || i >= st->num)
                   ^
    280.           return NULL;
    281.       return st->data[i];

crypto/stack/stack.c:280:9: 
    278.   {
    279.       if (st == NULL || i < 0 || i >= st->num)
    280. >         return NULL;
    281.       return st->data[i];
    282.   }

crypto/stack/stack.c:282:1: return from a call to OPENSSL_sk_value
    280.           return NULL;
    281.       return st->data[i];
    282. > }
    283.   
    284.   void *OPENSSL_sk_set(OPENSSL_STACK *st, int i, void *value)

include/openssl/x509_vfy.h:54:1: return from a call to sk_X509_OBJECT_value
  52.   
  53.   DEFINE_STACK_OF(X509_LOOKUP)
  54. > DEFINE_STACK_OF(X509_OBJECT)
  55.   DEFINE_STACK_OF(X509_VERIFY_PARAM)
  56.   

crypto/x509/x509_lu.c:517:9: 
515.       for (i = 0; i < cnt; i++, idx++) {
516.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
517. >         x = obj->data.x509;
518.           X509_up_ref(x);
519.           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}']