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net/netip: document the zero Addr

Fixes #49364

Change-Id: I3372f80723a4deae48ef106f88b0ad880cdd0e45
Reviewed-on: https://go-review.googlesource.com/c/go/+/361914
Trust: Josh Bleecher Snyder <josharian@gmail.com>
Run-TryBot: Josh Bleecher Snyder <josharian@gmail.com>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
This commit is contained in:
Josh Bleecher Snyder 2021-11-05 14:55:52 -07:00 committed by Brad Fitzpatrick
parent ba79c1e241
commit e83a2047e0

View File

@ -32,6 +32,9 @@ import (
//
// Unlike net.IP or net.IPAddr, Addr is a comparable value
// type (it supports == and can be a map key) and is immutable.
//
// The zero Addr is not a valid IP address.
// Addr{} is distinct from both 0.0.0.0 and ::.
type Addr struct {
// addr is the hi and lo bits of an IPv6 address. If z==z4,
// hi and lo contain the IPv4-mapped IPv6 address.