diff --git a/eth/protocols/snap/range.go b/eth/protocols/snap/range.go index dd380ff471..2627cb954b 100644 --- a/eth/protocols/snap/range.go +++ b/eth/protocols/snap/range.go @@ -42,15 +42,15 @@ func newHashRange(start common.Hash, num uint64) *hashRange { step256.SetFromBig(step) return &hashRange{ - current: uint256.NewInt().SetBytes32(start[:]), + current: new(uint256.Int).SetBytes32(start[:]), step: step256, } } // Next pushes the hash range to the next interval. func (r *hashRange) Next() bool { - next := new(uint256.Int) - if overflow := next.AddOverflow(r.current, r.step); overflow { + next, overflow := new(uint256.Int).AddOverflow(r.current, r.step) + if overflow { return false } r.current = next @@ -65,16 +65,17 @@ func (r *hashRange) Start() common.Hash { // End returns the last hash in the current interval. func (r *hashRange) End() common.Hash { // If the end overflows (non divisible range), return a shorter interval - next := new(uint256.Int) - if overflow := next.AddOverflow(r.current, r.step); overflow { + next, overflow := new(uint256.Int).AddOverflow(r.current, r.step) + if overflow { return common.HexToHash("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff") } - return new(uint256.Int).Sub(next, uint256.NewInt().SetOne()).Bytes32() + return next.SubUint64(next, 1).Bytes32() } // incHash returns the next hash, in lexicographical order (a.k.a plus one) func incHash(h common.Hash) common.Hash { - a := uint256.NewInt().SetBytes32(h[:]) - a.Add(a, uint256.NewInt().SetOne()) + var a uint256.Int + a.SetBytes32(h[:]) + a.AddUint64(&a, 1) return common.Hash(a.Bytes32()) }