net: properly convert IP address C strings to V strings (#12648)

vlib/net/address.v

@@ -66,30 +66,30 @@ const (
 )
 
 fn (a Ip) str() string {
-	buf := []byte{len: net.max_ip_len, init: 0}
+	buf := [net.max_ip_len]char{}
 
-	res := &char(C.inet_ntop(.ip, &a.addr, buf.data, buf.len))
+	res := &char(C.inet_ntop(.ip, &a.addr, &buf[0], buf.len))
 
 	if res == 0 {
 		return '<Unknown>'
 	}
 
-	saddr := buf.bytestr()
+	saddr := unsafe { cstring_to_vstring(&buf[0]) }
 	port := C.ntohs(a.port)
 
 	return '$saddr:$port'
 }
 
 fn (a Ip6) str() string {
-	buf := []byte{len: net.max_ip6_len, init: 0}
+	buf := [net.max_ip_len]char{}
 
-	res := &char(C.inet_ntop(.ip6, &a.addr, buf.data, buf.len))
+	res := &char(C.inet_ntop(.ip6, &a.addr, &buf[0], buf.len))
 
 	if res == 0 {
 		return '<Unknown>'
 	}
 
-	saddr := buf.bytestr()
+	saddr := unsafe { cstring_to_vstring(&buf[0]) }
 	port := C.ntohs(a.port)
 
 	return '[$saddr]:$port'

vlib/net/address_test.v

@@ -96,3 +96,17 @@ fn test_sizes_ipv4() {
 fn test_sizes_unix() {
 	assert sizeof(C.sockaddr_un) == sizeof(Unix) + aoffset
 }
+
+fn test_ip_str() {
+	ip := new_ip(1337, addr_ip_any).str()
+	expected := '0.0.0.0:1337'
+	assert ip.len == expected.len
+	assert ip == expected
+}
+
+fn test_ip6_str() {
+	ip := new_ip6(1337, addr_ip6_any).str()
+	expected := '[::]:1337'
+	assert ip.len == expected.len
+	assert ip == expected
+}