1 files changed, 17 insertions, 0 deletions
diff --git a/src/test/ui/generic-associated-types/bugs/issue-80626.rs b/src/test/ui/generic-associated-types/bugs/issue-80626.rs
new file mode 100644
index 000000000..14f27aff1
--- /dev/null
+++ b/src/test/ui/generic-associated-types/bugs/issue-80626.rs
@@ -0,0 +1,17 @@
+// check-fail
+// known-bug: #80626
+
+// This should pass, but it requires `Sized` to be coinductive.
+
+#![feature(generic_associated_types)]
+
+trait Allocator {
+    type Allocated<T>;
+}
+
+enum LinkedList<A: Allocator> {
+    Head,
+    Next(A::Allocated<Self>)
+}
+
+fn main() {}