jackc/pgx · error

cannot scan %v to netip.Addr

Error message

cannot scan %v to netip.Addr

What it means

Error "cannot scan %v to netip.Addr" thrown in jackc/pgx.

Source

Thrown at pgtype/builtin_wrappers.go:593

func (w *netipPrefixWrapper) ScanNetipPrefix(v netip.Prefix) error {
	*w = netipPrefixWrapper(v)
	return nil
}

func (w netipPrefixWrapper) NetipPrefixValue() (netip.Prefix, error) {
	return netip.Prefix(w), nil
}

type netipAddrWrapper netip.Addr

func (w *netipAddrWrapper) ScanNetipPrefix(v netip.Prefix) error {
	if !v.IsValid() {
		*w = netipAddrWrapper(netip.Addr{})
		return nil
	}

	if v.Addr().BitLen() != v.Bits() {
		return fmt.Errorf("cannot scan %v to netip.Addr", v)
	}

	*w = netipAddrWrapper(v.Addr())

	return nil
}

func (w netipAddrWrapper) NetipPrefixValue() (netip.Prefix, error) {
	addr := (netip.Addr)(w)
	if !addr.IsValid() {
		return netip.Prefix{}, nil
	}

	return netip.PrefixFrom(addr, addr.BitLen()), nil
}

type mapStringToPointerStringWrapper map[string]*string

View on GitHub (pinned to ec1a0befd2)

When it happens

Trigger: Thrown at pgtype/builtin_wrappers.go:593 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of jackc/pgx@ec1a0befd2 (2026-08-04). Data as JSON: /data/errors/1f423f11ad674e44.json. Report an issue: GitHub.