diff options
| -rw-r--r-- | library/std/src/net/ip.rs | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/library/std/src/net/ip.rs b/library/std/src/net/ip.rs index 4b6d60d121e..7d0c84e1770 100644 --- a/library/std/src/net/ip.rs +++ b/library/std/src/net/ip.rs @@ -59,7 +59,8 @@ pub enum IpAddr { /// /// `Ipv4Addr` provides a [`FromStr`] implementation. The four octets are in decimal /// notation, divided by `.` (this is called "dot-decimal notation"). -/// Notably, octal numbers and hexadecimal numbers are not allowed per [IETF RFC 6943]. +/// Notably, octal numbers (which are indicated with a leading `0`) and hexadecimal numbers (which +/// are indicated with a leading `0x`) are not allowed per [IETF RFC 6943]. /// /// [IETF RFC 6943]: https://tools.ietf.org/html/rfc6943#section-3.1.1 /// [`FromStr`]: crate::str::FromStr @@ -72,6 +73,8 @@ pub enum IpAddr { /// let localhost = Ipv4Addr::new(127, 0, 0, 1); /// assert_eq!("127.0.0.1".parse(), Ok(localhost)); /// assert_eq!(localhost.is_loopback(), true); +/// assert!("012.004.002.000".parse::<Ipv4Addr>().is_err()); // all octets are in octal +/// assert!("0xcb.0x0.0x71.0x00".parse::<Ipv4Addr>().is_err()); // all octets are in hex /// ``` #[derive(Copy)] #[stable(feature = "rust1", since = "1.0.0")] |