ssl/t1_lib.c:2456: error: NULL_DEREFERENCE
  pointer `null` is dereferenced by call to `ssl_security_cert()` at line 2456, column 10.
Showing all 11 steps of the trace


ssl/t1_lib.c:2447:1: start of procedure ssl_security_cert_chain()
2445.    */
2446.   
2447. > int ssl_security_cert_chain(SSL *s, STACK_OF(X509) *sk, X509 *x, int vfy)
2448.   {
2449.       int rv, start_idx, i;

ssl/t1_lib.c:2450:9: Taking true branch
2448.   {
2449.       int rv, start_idx, i;
2450.       if (x == NULL) {
                ^
2451.           x = sk_X509_value(sk, 0);
2452.           start_idx = 1;

ssl/t1_lib.c:2451:9: 
2449.       int rv, start_idx, i;
2450.       if (x == NULL) {
2451. >         x = sk_X509_value(sk, 0);
2452.           start_idx = 1;
2453.       } else

include/openssl/x509.h:99:1: start of procedure sk_X509_value()
  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:385:1: start of procedure OPENSSL_sk_value()
    383.   }
    384.   
    385. > void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    386.   {
    387.       if (st == NULL || i < 0 || i >= st->num)

crypto/stack/stack.c:387:9: Taking true branch
    385.   void *OPENSSL_sk_value(const OPENSSL_STACK *st, int i)
    386.   {
    387.       if (st == NULL || i < 0 || i >= st->num)
                   ^
    388.           return NULL;
    389.       return (void *)st->data[i];

crypto/stack/stack.c:388:9: 
    386.   {
    387.       if (st == NULL || i < 0 || i >= st->num)
    388. >         return NULL;
    389.       return (void *)st->data[i];
    390.   }

crypto/stack/stack.c:390:1: return from a call to OPENSSL_sk_value
    388.           return NULL;
    389.       return (void *)st->data[i];
    390. > }
    391.   
    392.   void *OPENSSL_sk_set(OPENSSL_STACK *st, int i, const void *data)

include/openssl/x509.h:99:1: return from a call to sk_X509_value
  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 */

ssl/t1_lib.c:2452:9: 
2450.       if (x == NULL) {
2451.           x = sk_X509_value(sk, 0);
2452. >         start_idx = 1;
2453.       } else
2454.           start_idx = 0;

ssl/t1_lib.c:2456:5: 
2454.           start_idx = 0;
2455.   
2456. >     rv = ssl_security_cert(s, NULL, x, vfy, 1);
2457.       if (rv != 1)
2458.           return rv;
