crypto/x509/x509_vfy.c:704: error: NULL_DEREFERENCE
  pointer `x` last assigned on line 702 could be null and is dereferenced at line 704, column 13.
Showing all 66 steps of the trace


crypto/x509/x509_vfy.c:695:1: start of procedure check_name_constraints()
693.   }
694.   
695. > static int check_name_constraints(X509_STORE_CTX *ctx)
696.   	{
697.   	X509 *x;

crypto/x509/x509_vfy.c:700:11: Condition is true
698.   	int i, j, rv;
699.   	/* Check name constraints for all certificates */
700.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
                 ^
701.   		{
702.   		x = sk_X509_value(ctx->chain, i);

crypto/x509/x509_vfy.c:700:7: 
698.   	int i, j, rv;
699.   	/* Check name constraints for all certificates */
700. > 	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
701.   		{
702.   		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:700:40: Loop condition is true. Entering loop body
698.   	int i, j, rv;
699.   	/* Check name constraints for all certificates */
700.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
                                              ^
701.   		{
702.   		x = sk_X509_value(ctx->chain, i);

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

crypto/x509/x509_vfy.c:702:3: 
700.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
701.   		{
702. > 		x = sk_X509_value(ctx->chain, i);
703.   		/* Ignore self issued certs unless last in chain */
704.   		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:704:7: Taking true branch
702.   		x = sk_X509_value(ctx->chain, i);
703.   		/* Ignore self issued certs unless last in chain */
704.   		if (i && (x->ex_flags & EXFLAG_SI))
             ^
705.   			continue;
706.   		/* Check against constraints for all certificates higher in

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

crypto/x509/x509_vfy.c:700:48: 
698.   	int i, j, rv;
699.   	/* Check name constraints for all certificates */
700. > 	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
701.   		{
702.   		x = sk_X509_value(ctx->chain, i);

crypto/x509/x509_vfy.c:700:40: Loop condition is true. Entering loop body
698.   	int i, j, rv;
699.   	/* Check name constraints for all certificates */
700.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
                                              ^
701.   		{
702.   		x = sk_X509_value(ctx->chain, i);

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

crypto/x509/x509_vfy.c:702:3: 
700.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
701.   		{
702. > 		x = sk_X509_value(ctx->chain, i);
703.   		/* Ignore self issued certs unless last in chain */
704.   		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:704:7: Taking true branch
702.   		x = sk_X509_value(ctx->chain, i);
703.   		/* Ignore self issued certs unless last in chain */
704.   		if (i && (x->ex_flags & EXFLAG_SI))
             ^
705.   			continue;
706.   		/* Check against constraints for all certificates higher in

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

crypto/x509/x509_vfy.c:711:12: Condition is true
709.   		 * assumed it expects them to be obeyed.
710.   		 */
711.   		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
                  ^
712.   			{
713.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;

crypto/x509/x509_vfy.c:711:8: 
709.   		 * assumed it expects them to be obeyed.
710.   		 */
711. > 		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
712.   			{
713.   			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:711:41: Loop condition is true. Entering loop body
709.   		 * assumed it expects them to be obeyed.
710.   		 */
711.   		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
                                               ^
712.   			{
713.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;

crypto/x509/x509_vfy.c:713:27: Condition is true
711.   		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
712.   			{
713.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;
                                 ^
714.   			if (nc)
715.   				{

crypto/x509/x509_vfy.c:713:4: 
711.   		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
712.   			{
713. > 			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;
714.   			if (nc)
715.   				{

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:714:8: Taking true branch
712.   			{
713.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;
714.   			if (nc)
              ^
715.   				{
716.   				rv = NAME_CONSTRAINTS_check(x, nc);

crypto/x509/x509_vfy.c:716:5: Skipping NAME_CONSTRAINTS_check(): empty list of specs
714.   			if (nc)
715.   				{
716.   				rv = NAME_CONSTRAINTS_check(x, nc);
           ^
717.   				if (rv != X509_V_OK)
718.   					{

crypto/x509/x509_vfy.c:717:9: Taking true branch
715.   				{
716.   				rv = NAME_CONSTRAINTS_check(x, nc);
717.   				if (rv != X509_V_OK)
               ^
718.   					{
719.   					ctx->error = rv;

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

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

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

crypto/x509/x509_vfy.c:722:11: Taking false branch
720.   					ctx->error_depth = i;
721.   					ctx->current_cert = x;
722.   					if (!ctx->verify_cb(0,ctx))
                 ^
723.   						return 0;
724.   					}

crypto/x509/x509_vfy.c:711:48: 
709.   		 * assumed it expects them to be obeyed.
710.   		 */
711. > 		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
712.   			{
713.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;

crypto/x509/x509_vfy.c:711:41: Loop condition is false. Leaving loop
709.   		 * assumed it expects them to be obeyed.
710.   		 */
711.   		for (j = sk_X509_num(ctx->chain) - 1; j > i; j--)
                                               ^
712.   			{
713.   			NAME_CONSTRAINTS *nc = sk_X509_value(ctx->chain, j)->nc;

crypto/x509/x509_vfy.c:700:48: 
698.   	int i, j, rv;
699.   	/* Check name constraints for all certificates */
700. > 	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
701.   		{
702.   		x = sk_X509_value(ctx->chain, i);

crypto/x509/x509_vfy.c:700:40: Loop condition is true. Entering loop body
698.   	int i, j, rv;
699.   	/* Check name constraints for all certificates */
700.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
                                              ^
701.   		{
702.   		x = sk_X509_value(ctx->chain, i);

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

crypto/x509/x509_vfy.c:702:3: 
700.   	for (i = sk_X509_num(ctx->chain) - 1; i >= 0; i--)
701.   		{
702. > 		x = sk_X509_value(ctx->chain, i);
703.   		/* Ignore self issued certs unless last in chain */
704.   		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:704:7: Taking true branch
702.   		x = sk_X509_value(ctx->chain, i);
703.   		/* Ignore self issued certs unless last in chain */
704.   		if (i && (x->ex_flags & EXFLAG_SI))
             ^
705.   			continue;
706.   		/* Check against constraints for all certificates higher in

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