crypto/x509/x509_lu.c:506: error: NULL_DEREFERENCE
  pointer `obj` last assigned on line 505 could be null and is dereferenced at line 506, column 13.
Showing all 25 steps of the trace


crypto/x509/x509_lu.c:471:1: start of procedure X509_STORE_CTX_get1_certs()
469.   }
470.   
471. > STACK_OF(X509) *X509_STORE_CTX_get1_certs(X509_STORE_CTX *ctx, X509_NAME *nm)
472.   {
473.       int i, idx, cnt;

crypto/x509/x509_lu.c:474:5: 
472.   {
473.       int i, idx, cnt;
474. >     STACK_OF(X509) *sk = NULL;
475.       X509 *x;
476.       X509_OBJECT *obj;

crypto/x509/x509_lu.c:478:5: 
476.       X509_OBJECT *obj;
477.   
478. >     CRYPTO_THREAD_write_lock(ctx->ctx->lock);
479.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
480.       if (idx < 0) {

crypto/threads_pthread.c:64:1: start of procedure CRYPTO_THREAD_write_lock()
  62.   }
  63.   
  64. > int CRYPTO_THREAD_write_lock(CRYPTO_RWLOCK *lock)
  65.   {
  66.   # ifdef USE_RWLOCK

crypto/threads_pthread.c:67:9: Taking true branch
  65.   {
  66.   # ifdef USE_RWLOCK
  67.       if (pthread_rwlock_wrlock(lock) != 0)
                ^
  68.           return 0;
  69.   # else

crypto/threads_pthread.c:68:9: 
  66.   # ifdef USE_RWLOCK
  67.       if (pthread_rwlock_wrlock(lock) != 0)
  68. >         return 0;
  69.   # else
  70.       if (pthread_mutex_lock(lock) != 0)

crypto/threads_pthread.c:75:1: return from a call to CRYPTO_THREAD_write_lock
  73.   
  74.       return 1;
  75. > }
  76.   
  77.   int CRYPTO_THREAD_unlock(CRYPTO_RWLOCK *lock)

crypto/x509/x509_lu.c:479:5: Skipping x509_object_idx_cnt(): empty list of specs
477.   
478.       CRYPTO_THREAD_write_lock(ctx->ctx->lock);
479.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
           ^
480.       if (idx < 0) {
481.           /*

crypto/x509/x509_lu.c:480:9: Taking false branch
478.       CRYPTO_THREAD_write_lock(ctx->ctx->lock);
479.       idx = x509_object_idx_cnt(ctx->ctx->objs, X509_LU_X509, nm, &cnt);
480.       if (idx < 0) {
               ^
481.           /*
482.            * Nothing found in cache: do lookup to possibly add new objects to

crypto/x509/x509_lu.c:503:5: 
501.       }
502.   
503. >     sk = sk_X509_new_null();
504.       for (i = 0; i < cnt; i++, idx++) {
505.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);

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

crypto/stack/stack.c:99:1: start of procedure OPENSSL_sk_new_null()
    97.   }
    98.   
    99. > OPENSSL_STACK *OPENSSL_sk_new_null(void)
    100.   {
    101.       return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);

crypto/stack/stack.c:101:5: Skipping OPENSSL_sk_new(): empty list of specs
    99.   OPENSSL_STACK *OPENSSL_sk_new_null(void)
    100.   {
    101.       return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);
               ^
    102.   }
    103.   

crypto/stack/stack.c:102:1: return from a call to OPENSSL_sk_new_null
    100.   {
    101.       return OPENSSL_sk_new((OPENSSL_sk_compfunc)NULL);
    102. > }
    103.   
    104.   OPENSSL_STACK *OPENSSL_sk_new(OPENSSL_sk_compfunc c)

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

crypto/x509/x509_lu.c:504:10: 
502.   
503.       sk = sk_X509_new_null();
504. >     for (i = 0; i < cnt; i++, idx++) {
505.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
506.           x = obj->data.x509;

crypto/x509/x509_lu.c:504:17: Loop condition is true. Entering loop body
502.   
503.       sk = sk_X509_new_null();
504.       for (i = 0; i < cnt; i++, idx++) {
                       ^
505.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
506.           x = obj->data.x509;

crypto/x509/x509_lu.c:505:9: 
503.       sk = sk_X509_new_null();
504.       for (i = 0; i < cnt; i++, idx++) {
505. >         obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
506.           x = obj->data.x509;
507.           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:284:1: start of procedure OPENSSL_sk_value()
    282.   }
    283.   
    284. > void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    285.   {
    286.       if (st == NULL || i < 0 || i >= st->num)

crypto/stack/stack.c:286:9: Taking true branch
    284.   void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    285.   {
    286.       if (st == NULL || i < 0 || i >= st->num)
                   ^
    287.           return NULL;
    288.       return (void *)st->data[i];

crypto/stack/stack.c:287:9: 
    285.   {
    286.       if (st == NULL || i < 0 || i >= st->num)
    287. >         return NULL;
    288.       return (void *)st->data[i];
    289.   }

crypto/stack/stack.c:289:1: return from a call to OPENSSL_sk_value
    287.           return NULL;
    288.       return (void *)st->data[i];
    289. > }
    290.   
    291.   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:506:9: 
504.       for (i = 0; i < cnt; i++, idx++) {
505.           obj = sk_X509_OBJECT_value(ctx->ctx->objs, idx);
506. >         x = obj->data.x509;
507.           X509_up_ref(x);
508.           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# 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((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 (void *)st->data[i];\n}']