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Diffstat (limited to 'libgo/go/net/ip.go')
-rw-r--r--libgo/go/net/ip.go5
1 files changed, 4 insertions, 1 deletions
diff --git a/libgo/go/net/ip.go b/libgo/go/net/ip.go
index 38e1aa2..54c5288 100644
--- a/libgo/go/net/ip.go
+++ b/libgo/go/net/ip.go
@@ -308,7 +308,7 @@ func ubtoa(dst []byte, start int, v byte) int {
// It returns one of 4 forms:
// - "<nil>", if ip has length 0
// - dotted decimal ("192.0.2.1"), if ip is an IPv4 or IP4-mapped IPv6 address
-// - IPv6 ("2001:db8::1"), if ip is a valid IPv6 address
+// - IPv6 conforming to RFC 5952 ("2001:db8::1"), if ip is a valid IPv6 address
// - the hexadecimal form of ip, without punctuation, if no other cases apply
func (ip IP) String() string {
p := ip
@@ -545,6 +545,9 @@ func (n *IPNet) Network() string { return "ip+net" }
// character and a mask expressed as hexadecimal form with no
// punctuation like "198.51.100.0/c000ff00".
func (n *IPNet) String() string {
+ if n == nil {
+ return "<nil>"
+ }
nn, m := networkNumberAndMask(n)
if nn == nil || m == nil {
return "<nil>"