Undefined (reference) in projects: DragonOS

25     Undefined,  enumerator
30         Self::Undefined  in default()

467     Undefined,  enumerator
479         Self::Undefined  in default()

1340                     EchoOperation::Undefined(ch) => {  in echoes()

/DragonOS/kernel/src/driver/tty/
H A D	mod.rs	`25 Undefined, enumerator 30 Self::Undefined in default()`
H A D	tty_core.rs	`582 Undefined(u8), enumerator 592 _ => Self::Undefined(num), in from_u8() 602 EchoOperation::Undefined(num) => num, in to_u8()`
H A D	tty_driver.rs	`467 Undefined, enumerator 479 Self::Undefined in default()`
/DragonOS/kernel/crates/klog_types/src/
H A D	lib.rs	`64 type_: AllocatorLogType::Undefined, in zeroed() 66 source: LogSource::Undefined, in zeroed() 120 Undefined, enumerator 164 Undefined = 0, enumerator`
/DragonOS/kernel/src/driver/tty/tty_ldisc/
H A D	ntty.rs	`1340 EchoOperation::Undefined(ch) => { in echoes()`