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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/borrowck/borrowck-no-cycle-in-exchange-heap.rs
parentInitial commit. (diff)
downloadrustc-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/borrowck/borrowck-no-cycle-in-exchange-heap.rs')
-rw-r--r--src/test/ui/borrowck/borrowck-no-cycle-in-exchange-heap.rs20
1 files changed, 20 insertions, 0 deletions
diff --git a/src/test/ui/borrowck/borrowck-no-cycle-in-exchange-heap.rs b/src/test/ui/borrowck/borrowck-no-cycle-in-exchange-heap.rs
new file mode 100644
index 000000000..f035049d8
--- /dev/null
+++ b/src/test/ui/borrowck/borrowck-no-cycle-in-exchange-heap.rs
@@ -0,0 +1,20 @@
+struct Node_ {
+ a: Box<Cycle>
+}
+
+enum Cycle {
+ Node(Node_),
+ Empty,
+}
+
+fn main() {
+ let mut x: Box<_> = Box::new(Cycle::Node(Node_ {a: Box::new(Cycle::Empty)}));
+
+ // Create a cycle!
+ match *x {
+ Cycle::Node(ref mut y) => {
+ y.a = x; //~ ERROR cannot move out of
+ }
+ Cycle::Empty => {}
+ };
+}