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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/issue-57472.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/issue-57472.rs')
-rw-r--r-- | src/test/ui/pattern/usefulness/issue-57472.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/src/test/ui/pattern/usefulness/issue-57472.rs b/src/test/ui/pattern/usefulness/issue-57472.rs new file mode 100644 index 000000000..113100637 --- /dev/null +++ b/src/test/ui/pattern/usefulness/issue-57472.rs @@ -0,0 +1,35 @@ +#![crate_type="lib"] +#![deny(unreachable_patterns)] + +mod test_struct { + // Test the exact copy of the minimal example + // posted in the issue. + pub struct Punned { + foo: [u8; 1], + bar: [u8; 1], + } + + pub fn test(punned: Punned) { + match punned { + Punned { foo: [_], .. } => println!("foo"), + Punned { bar: [_], .. } => println!("bar"), + //~^ ERROR unreachable pattern [unreachable_patterns] + } + } +} + +mod test_union { + // Test the same thing using a union. + pub union Punned { + foo: [u8; 1], + bar: [u8; 1], + } + + pub fn test(punned: Punned) { + match punned { + Punned { foo: [_] } => println!("foo"), + Punned { bar: [_] } => println!("bar"), + //~^ ERROR unreachable pattern [unreachable_patterns] + } + } +} |