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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-3601.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-3601.rs')
-rw-r--r-- | src/test/ui/pattern/usefulness/issue-3601.rs | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/src/test/ui/pattern/usefulness/issue-3601.rs b/src/test/ui/pattern/usefulness/issue-3601.rs new file mode 100644 index 000000000..6215a2398 --- /dev/null +++ b/src/test/ui/pattern/usefulness/issue-3601.rs @@ -0,0 +1,34 @@ +#![feature(box_patterns)] + +struct HTMLImageData { + image: Option<String> +} + +struct ElementData { + kind: Box<ElementKind> +} + +enum ElementKind { + HTMLImageElement(HTMLImageData) +} + +enum NodeKind { + Element(ElementData) +} + +struct NodeData { + kind: Box<NodeKind>, +} + +fn main() { + let mut id = HTMLImageData { image: None }; + let ed = ElementData { kind: Box::new(ElementKind::HTMLImageElement(id)) }; + let n = NodeData { kind: Box::new(NodeKind::Element(ed)) }; + + // n.b. span could be better + match n.kind { + box NodeKind::Element(ed) => match ed.kind { //~ ERROR non-exhaustive patterns + box ElementKind::HTMLImageElement(ref d) if d.image.is_some() => { true } + }, + }; +} |