mirror of https://github.com/rust-lang/rust
55 lines
1.4 KiB
Rust
55 lines
1.4 KiB
Rust
#![deny(unreachable_patterns)]
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fn main() {
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let s = &[0x00; 4][..]; //Slice of any value
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const MAGIC_TEST: &[u8] = b"TEST"; //Const slice to pattern match with
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match s {
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MAGIC_TEST => (),
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[0x00, 0x00, 0x00, 0x00] => (),
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[84, 69, 83, 84] => (), //~ ERROR unreachable pattern
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_ => (),
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}
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match s {
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[0x00, 0x00, 0x00, 0x00] => (),
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MAGIC_TEST => (),
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[84, 69, 83, 84] => (), //~ ERROR unreachable pattern
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_ => (),
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}
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match s {
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[0x00, 0x00, 0x00, 0x00] => (),
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[84, 69, 83, 84] => (),
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MAGIC_TEST => (), //~ ERROR unreachable pattern
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_ => (),
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}
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const FOO: [u8; 1] = [4];
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match [99] {
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[0x00] => (),
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[4] => (),
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FOO => (), //~ ERROR unreachable pattern
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_ => (),
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}
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const BAR: &[u8; 1] = &[4];
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match &[99] {
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[0x00] => (),
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[4] => (),
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BAR => (), //~ ERROR unreachable pattern
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b"a" => (),
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_ => (),
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}
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const BOO: &[u8; 0] = &[];
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match &[] {
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[] => (),
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BOO => (), //~ ERROR unreachable pattern
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b"" => (), //~ ERROR unreachable pattern
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_ => (), //~ ERROR unreachable pattern
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}
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const CONST1: &[bool; 1] = &[true];
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match &[false] {
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CONST1 => {}
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[true] => {} //~ ERROR unreachable pattern
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[false] => {}
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}
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}
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