crypto/bn/bn_gf2m.c:557: error: INTEGER_OVERFLOW_L2
  ([0, +oo] - 1):unsigned64 by call to `BN_num_bits`.
Showing all 6 steps of the trace


crypto/bn/bn_gf2m.c:539:7: Call
537.   	if (!BN_one(b)) goto err;
538.   	if (!BN_GF2m_mod(u, a, p)) goto err;
539.   	if (!BN_copy(v, p)) goto err;
             ^
540.   
541.   	if (BN_is_zero(u)) goto err;

crypto/bn/bn_lib.c:497:1: Parameter `a->top`
  495.   	}
  496.   
  497. > BIGNUM *BN_copy(BIGNUM *a, const BIGNUM *b)
  498.   	{
  499.   	int i;

crypto/bn/bn_gf2m.c:557:7: Call
555.   		if (BN_abs_is_word(u, 1)) break;
556.   
557.   		if (BN_num_bits(u) < BN_num_bits(v))
             ^
558.   			{
559.   			tmp = u; u = v; v = tmp;

crypto/bn/bn_lib.c:248:1: <LHS trace>
246.   	}
247.   
248. > int BN_num_bits(const BIGNUM *a)
249.   	{
250.   	int i = a->top - 1;

crypto/bn/bn_lib.c:248:1: Parameter `a->top`
  246.   	}
  247.   
  248. > int BN_num_bits(const BIGNUM *a)
  249.   	{
  250.   	int i = a->top - 1;

crypto/bn/bn_lib.c:250:2: Binary operation: ([0, +oo] - 1):unsigned64 by call to `BN_num_bits` 
  248.   int BN_num_bits(const BIGNUM *a)
  249.   	{
  250.   	int i = a->top - 1;
          ^
  251.   	bn_check_top(a);
  252.   
