diff options
author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
---|---|---|
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/non-exhaustive-match.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/non-exhaustive-match.rs')
-rw-r--r-- | src/test/ui/pattern/usefulness/non-exhaustive-match.rs | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/src/test/ui/pattern/usefulness/non-exhaustive-match.rs b/src/test/ui/pattern/usefulness/non-exhaustive-match.rs new file mode 100644 index 000000000..4ff12aa2f --- /dev/null +++ b/src/test/ui/pattern/usefulness/non-exhaustive-match.rs @@ -0,0 +1,63 @@ +#![allow(illegal_floating_point_literal_pattern)] + +enum T { A, B } + +fn main() { + let x = T::A; + match x { T::B => { } } //~ ERROR non-exhaustive patterns: `A` not covered + match true { //~ ERROR non-exhaustive patterns: `false` not covered + true => {} + } + match Some(10) { //~ ERROR non-exhaustive patterns: `Some(_)` not covered + None => {} + } + match (2, 3, 4) { //~ ERROR non-exhaustive patterns: `(_, _, i32::MIN..=3_i32)` + // and `(_, _, 5_i32..=i32::MAX)` not covered + (_, _, 4) => {} + } + match (T::A, T::A) { //~ ERROR non-exhaustive patterns: `(A, A)` and `(B, B)` not covered + (T::A, T::B) => {} + (T::B, T::A) => {} + } + match T::A { //~ ERROR non-exhaustive patterns: `B` not covered + T::A => {} + } + // This is exhaustive, though the algorithm got it wrong at one point + match (T::A, T::B) { + (T::A, _) => {} + (_, T::A) => {} + (T::B, T::B) => {} + } + let vec = vec![Some(42), None, Some(21)]; + let vec: &[Option<isize>] = &vec; + match *vec { //~ ERROR non-exhaustive patterns: `[]` not covered + [Some(..), None, ref tail @ ..] => {} + [Some(..), Some(..), ref tail @ ..] => {} + [None] => {} + } + let vec = vec![1]; + let vec: &[isize] = &vec; + match *vec { + [_, ref tail @ ..] => (), + [] => () + } + let vec = vec![0.5f32]; + let vec: &[f32] = &vec; + match *vec { //~ ERROR non-exhaustive patterns: `[_, _, _, _, ..]` not covered + [0.1, 0.2, 0.3] => (), + [0.1, 0.2] => (), + [0.1] => (), + [] => () + } + let vec = vec![Some(42), None, Some(21)]; + let vec: &[Option<isize>] = &vec; + match *vec { + [Some(..), None, ref tail @ ..] => {} + [Some(..), Some(..), ref tail @ ..] => {} + [None, None, ref tail @ ..] => {} + [None, Some(..), ref tail @ ..] => {} + [Some(_)] => {} + [None] => {} + [] => {} + } +} |