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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/pattern/usefulness/match-vec-unreachable.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/pattern/usefulness/match-vec-unreachable.rs')
-rw-r--r-- | src/test/ui/pattern/usefulness/match-vec-unreachable.rs | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/src/test/ui/pattern/usefulness/match-vec-unreachable.rs b/src/test/ui/pattern/usefulness/match-vec-unreachable.rs new file mode 100644 index 000000000..3342389be --- /dev/null +++ b/src/test/ui/pattern/usefulness/match-vec-unreachable.rs @@ -0,0 +1,29 @@ +#![deny(unreachable_patterns)] + +fn main() { + let x: Vec<(isize, isize)> = Vec::new(); + let x: &[(isize, isize)] = &x; + match *x { + [a, (2, 3), _] => (), + [(1, 2), (2, 3), b] => (), //~ ERROR unreachable pattern + _ => () + } + + let x: Vec<String> = vec!["foo".to_string(), + "bar".to_string(), + "baz".to_string()]; + let x: &[String] = &x; + match *x { + [ref a, _, _, ..] => { println!("{}", a); } + [_, _, _, _, _] => { } //~ ERROR unreachable pattern + _ => { } + } + + let x: Vec<char> = vec!['a', 'b', 'c']; + let x: &[char] = &x; + match *x { + ['a', 'b', 'c', ref _tail @ ..] => {} + ['a', 'b', 'c'] => {} //~ ERROR unreachable pattern + _ => {} + } +} |