crypto/x509/x509_vfy.c:702: error: NULL_DEREFERENCE
  pointer `x` last assigned on line 700 could be null and is dereferenced at line 702, column 13.
Showing all 66 steps of the trace


crypto/x509/x509_vfy.c:693:1: start of procedure check_name_constraints()
691.   }
692.   
693. > static int check_name_constraints(X509_STORE_CTX *ctx)
694.   	{
695.   	X509 *x;

crypto/x509/x509_vfy.c:698:11: Condition is true
696.   	int i, j, rv;
697.   	/* Check name constraints for all certificates */
698.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
                 ^
699.   		{
700.   		x = sk_X509_value(ctx->chain, i);

crypto/x509/x509_vfy.c:698:7: 
696.   	int i, j, rv;
697.   	/* Check name constraints for all certificates */
698. > 	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
699.   		{
700.   		x = sk_X509_value(ctx->chain, i);

crypto/stack/stack.c:294:1: start of procedure sk_num()
  292.   	}
  293.   
  294. > int sk_num(const _STACK *st)
  295.   {
  296.   	if(st == NULL) return -1;

crypto/stack/stack.c:296:5: Taking false branch
  294.   int sk_num(const _STACK *st)
  295.   {
  296.   	if(st == NULL) return -1;
             ^
  297.   	return st->num;
  298.   }

crypto/stack/stack.c:297:2: 
  295.   {
  296.   	if(st == NULL) return -1;
  297. > 	return st->num;
  298.   }
  299.   

crypto/stack/stack.c:298:1: return from a call to sk_num
  296.   	if(st == NULL) return -1;
  297.   	return st->num;
  298. > }
  299.   
  300.   void *sk_value(const _STACK *st, int i)

crypto/x509/x509_vfy.c:698:40: Loop condition is true. Entering loop body
696.   	int i, j, rv;
697.   	/* Check name constraints for all certificates */
698.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
                                              ^
699.   		{
700.   		x = sk_X509_value(ctx->chain, i);

crypto/x509/x509_vfy.c:700:7: Condition is true
698.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
699.   		{
700.   		x = sk_X509_value(ctx->chain, i);
             ^
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))

crypto/x509/x509_vfy.c:700:3: 
698.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
699.   		{
700. > 		x = sk_X509_value(ctx->chain, i);
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))

crypto/stack/stack.c:300:1: start of procedure sk_value()
  298.   }
  299.   
  300. > void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;

crypto/stack/stack.c:302:6: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
              ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:302:13: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
                     ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:302:24: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
                                ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:303:2: 
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
  303. > 	return st->data[i];
  304.   }
  305.   

crypto/stack/stack.c:304:1: return from a call to sk_value
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
  303.   	return st->data[i];
  304. > }
  305.   
  306.   void *sk_set(_STACK *st, int i, void *value)

crypto/x509/x509_vfy.c:702:7: Taking true branch
700.   		x = sk_X509_value(ctx->chain, i);
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))
             ^
703.   			continue;
704.   		/* Check against constraints for all certificates higher in

crypto/x509/x509_vfy.c:702:13: Taking true branch
700.   		x = sk_X509_value(ctx->chain, i);
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))
                   ^
703.   			continue;
704.   		/* Check against constraints for all certificates higher in

crypto/x509/x509_vfy.c:698:48: 
696.   	int i, j, rv;
697.   	/* Check name constraints for all certificates */
698. > 	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
699.   		{
700.   		x = sk_X509_value(ctx->chain, i);

crypto/x509/x509_vfy.c:698:40: Loop condition is true. Entering loop body
696.   	int i, j, rv;
697.   	/* Check name constraints for all certificates */
698.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
                                              ^
699.   		{
700.   		x = sk_X509_value(ctx->chain, i);

crypto/x509/x509_vfy.c:700:7: Condition is true
698.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
699.   		{
700.   		x = sk_X509_value(ctx->chain, i);
             ^
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))

crypto/x509/x509_vfy.c:700:3: 
698.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
699.   		{
700. > 		x = sk_X509_value(ctx->chain, i);
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))

crypto/stack/stack.c:300:1: start of procedure sk_value()
  298.   }
  299.   
  300. > void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;

crypto/stack/stack.c:302:6: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
              ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:302:13: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
                     ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:302:24: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
                                ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:303:2: 
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
  303. > 	return st->data[i];
  304.   }
  305.   

crypto/stack/stack.c:304:1: return from a call to sk_value
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
  303.   	return st->data[i];
  304. > }
  305.   
  306.   void *sk_set(_STACK *st, int i, void *value)

crypto/x509/x509_vfy.c:702:7: Taking true branch
700.   		x = sk_X509_value(ctx->chain, i);
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))
             ^
703.   			continue;
704.   		/* Check against constraints for all certificates higher in

crypto/x509/x509_vfy.c:702:13: Taking false branch
700.   		x = sk_X509_value(ctx->chain, i);
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))
                   ^
703.   			continue;
704.   		/* Check against constraints for all certificates higher in

crypto/x509/x509_vfy.c:709:12: Condition is true
707.   		 * assumed it expects them to be obeyed.
708.   		 */
709.   		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
                  ^
710.   			{
711.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;

crypto/x509/x509_vfy.c:709:8: 
707.   		 * assumed it expects them to be obeyed.
708.   		 */
709. > 		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
710.   			{
711.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;

crypto/stack/stack.c:294:1: start of procedure sk_num()
  292.   	}
  293.   
  294. > int sk_num(const _STACK *st)
  295.   {
  296.   	if(st == NULL) return -1;

crypto/stack/stack.c:296:5: Taking false branch
  294.   int sk_num(const _STACK *st)
  295.   {
  296.   	if(st == NULL) return -1;
             ^
  297.   	return st->num;
  298.   }

crypto/stack/stack.c:297:2: 
  295.   {
  296.   	if(st == NULL) return -1;
  297. > 	return st->num;
  298.   }
  299.   

crypto/stack/stack.c:298:1: return from a call to sk_num
  296.   	if(st == NULL) return -1;
  297.   	return st->num;
  298. > }
  299.   
  300.   void *sk_value(const _STACK *st, int i)

crypto/x509/x509_vfy.c:709:41: Loop condition is true. Entering loop body
707.   		 * assumed it expects them to be obeyed.
708.   		 */
709.   		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
                                               ^
710.   			{
711.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;

crypto/x509/x509_vfy.c:711:27: Condition is true
709.   		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
710.   			{
711.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;
                                 ^
712.   			if (nc)
713.   				{

crypto/x509/x509_vfy.c:711:4: 
709.   		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
710.   			{
711. > 			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;
712.   			if (nc)
713.   				{

crypto/stack/stack.c:300:1: start of procedure sk_value()
  298.   }
  299.   
  300. > void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;

crypto/stack/stack.c:302:6: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
              ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:302:13: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
                     ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:302:24: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
                                ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:303:2: 
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
  303. > 	return st->data[i];
  304.   }
  305.   

crypto/stack/stack.c:304:1: return from a call to sk_value
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
  303.   	return st->data[i];
  304. > }
  305.   
  306.   void *sk_set(_STACK *st, int i, void *value)

crypto/x509/x509_vfy.c:712:8: Taking true branch
710.   			{
711.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;
712.   			if (nc)
              ^
713.   				{
714.   				rv = NAME_CONSTRAINTS_check(x, nc);

crypto/x509/x509_vfy.c:714:5: Skipping NAME_CONSTRAINTS_check(): empty list of specs
712.   			if (nc)
713.   				{
714.   				rv = NAME_CONSTRAINTS_check(x, nc);
           ^
715.   				if (rv != X509_V_OK)
716.   					{

crypto/x509/x509_vfy.c:715:9: Taking true branch
713.   				{
714.   				rv = NAME_CONSTRAINTS_check(x, nc);
715.   				if (rv != X509_V_OK)
               ^
716.   					{
717.   					ctx->error = rv;

crypto/x509/x509_vfy.c:717:6: 
715.   				if (rv != X509_V_OK)
716.   					{
717. > 					ctx->error = rv;
718.   					ctx->error_depth = i;
719.   					ctx->current_cert = x;

crypto/x509/x509_vfy.c:718:6: 
716.   					{
717.   					ctx->error = rv;
718. > 					ctx->error_depth = i;
719.   					ctx->current_cert = x;
720.   					if (!ctx->verify_cb(0,ctx))

crypto/x509/x509_vfy.c:719:6: 
717.   					ctx->error = rv;
718.   					ctx->error_depth = i;
719. > 					ctx->current_cert = x;
720.   					if (!ctx->verify_cb(0,ctx))
721.   						return 0;

crypto/x509/x509_vfy.c:720:11: Taking false branch
718.   					ctx->error_depth = i;
719.   					ctx->current_cert = x;
720.   					if (!ctx->verify_cb(0,ctx))
                 ^
721.   						return 0;
722.   					}

crypto/x509/x509_vfy.c:709:48: 
707.   		 * assumed it expects them to be obeyed.
708.   		 */
709. > 		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
710.   			{
711.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;

crypto/x509/x509_vfy.c:709:41: Loop condition is false. Leaving loop
707.   		 * assumed it expects them to be obeyed.
708.   		 */
709.   		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
                                               ^
710.   			{
711.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;

crypto/x509/x509_vfy.c:698:48: 
696.   	int i, j, rv;
697.   	/* Check name constraints for all certificates */
698. > 	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
699.   		{
700.   		x = sk_X509_value(ctx->chain, i);

crypto/x509/x509_vfy.c:698:40: Loop condition is true. Entering loop body
696.   	int i, j, rv;
697.   	/* Check name constraints for all certificates */
698.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
                                              ^
699.   		{
700.   		x = sk_X509_value(ctx->chain, i);

crypto/x509/x509_vfy.c:700:7: Condition is true
698.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
699.   		{
700.   		x = sk_X509_value(ctx->chain, i);
             ^
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))

crypto/x509/x509_vfy.c:700:3: 
698.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
699.   		{
700. > 		x = sk_X509_value(ctx->chain, i);
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))

crypto/stack/stack.c:300:1: start of procedure sk_value()
  298.   }
  299.   
  300. > void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;

crypto/stack/stack.c:302:6: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
              ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:302:13: Taking false branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
                     ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:302:24: Taking true branch
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
                                ^
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:302:39: 
  300.   void *sk_value(const _STACK *st, int i)
  301.   {
  302. > 	if(!st || (i < 0) || (i >= st->num)) return NULL;
  303.   	return st->data[i];
  304.   }

crypto/stack/stack.c:304:1: return from a call to sk_value
  302.   	if(!st || (i < 0) || (i >= st->num)) return NULL;
  303.   	return st->data[i];
  304. > }
  305.   
  306.   void *sk_set(_STACK *st, int i, void *value)

crypto/x509/x509_vfy.c:702:7: Taking true branch
700.   		x = sk_X509_value(ctx->chain, i);
701.   		/* Ignore self issued certs unless last in chain */
702.   		if (i && (x->ex_flags & EXFLAG_SI))
             ^
703.   			continue;
704.   		/* Check against constraints for all certificates higher in

crypto/x509/x509_vfy.c:702:13: 
700.   		x = sk_X509_value(ctx->chain, i);
701.   		/* Ignore self issued certs unless last in chain */
702. > 		if (i && (x->ex_flags & EXFLAG_SI))
703.   			continue;
704.   		/* Check against constraints for all certificates higher in
