rust/tests/ui/pattern/usefulness/match-byte-array-patterns.rs

56 lines
1.1 KiB
Rust

#![deny(unreachable_patterns)]
fn main() {
let buf = &[0, 1, 2, 3];
match buf {
b"AAAA" => {},
&[0x41, 0x41, 0x41, 0x41] => {} //~ ERROR unreachable pattern
_ => {}
}
match buf {
&[0x41, 0x41, 0x41, 0x41] => {}
b"AAAA" => {}, //~ ERROR unreachable pattern
_ => {}
}
match buf {
&[_, 0x41, 0x41, 0x41] => {},
b"AAAA" => {}, //~ ERROR unreachable pattern
_ => {}
}
match buf {
&[0x41, .., 0x41] => {}
b"AAAA" => {}, //~ ERROR unreachable pattern
_ => {}
}
let buf: &[u8] = buf;
match buf {
b"AAAA" => {},
&[0x41, 0x41, 0x41, 0x41] => {} //~ ERROR unreachable pattern
_ => {}
}
match buf {
&[0x41, 0x41, 0x41, 0x41] => {}
b"AAAA" => {}, //~ ERROR unreachable pattern
_ => {}
}
match buf {
&[_, 0x41, 0x41, 0x41] => {},
b"AAAA" => {}, //~ ERROR unreachable pattern
_ => {}
}
match buf {
&[0x41, .., 0x41] => {}
b"AAAA" => {}, //~ ERROR unreachable pattern
_ => {}
}
}