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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/guards.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 '')
-rw-r--r-- | src/test/ui/pattern/usefulness/guards.rs | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/pattern/usefulness/guards.rs b/src/test/ui/pattern/usefulness/guards.rs new file mode 100644 index 000000000..b15440cf6 --- /dev/null +++ b/src/test/ui/pattern/usefulness/guards.rs @@ -0,0 +1,22 @@ +#![feature(exclusive_range_pattern)] +#![deny(unreachable_patterns)] + +enum Q { R(Option<usize>) } + +pub fn main() { + match Q::R(None) { + Q::R(S) if S.is_some() => {} + _ => {} + } + + match 0u8 { //~ ERROR non-exhaustive patterns + 0 .. 128 => {} + 128 ..= 255 if true => {} + } + + match 0u8 { + 0 .. 128 => {} + 128 ..= 255 if false => {} + 128 ..= 255 => {} // ok, because previous arm was guarded + } +} |