31 lines
823 B
Rust
31 lines
823 B
Rust
#![feature(slice_patterns)]
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#![deny(unreachable_patterns)]
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fn main() {
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let x: Vec<(isize, isize)> = Vec::new();
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let x: &[(isize, isize)] = &x;
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match *x {
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[a, (2, 3), _] => (),
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[(1, 2), (2, 3), b] => (), //~ ERROR unreachable pattern
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_ => ()
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}
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let x: Vec<String> = vec!["foo".to_string(),
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"bar".to_string(),
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"baz".to_string()];
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let x: &[String] = &x;
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match *x {
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[ref a, _, _, ..] => { println!("{}", a); }
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[_, _, _, _, _] => { } //~ ERROR unreachable pattern
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_ => { }
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}
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let x: Vec<char> = vec!['a', 'b', 'c'];
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let x: &[char] = &x;
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match *x {
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['a', 'b', 'c', ref _tail..] => {}
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['a', 'b', 'c'] => {} //~ ERROR unreachable pattern
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_ => {}
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}
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}
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