weak-new-uninhabited-issue-48493

Author: Kivooeo

tests/ui/allocator/weak-uninhabited-type.rs

@@ -1,7 +1,13 @@
+//! Checks that `Weak` pointers can be created with an empty enum type parameter.
+//! And generic `Weak` handles zero-variant enums without error.
+//!
+//! Regression test for <https://github.com/rust-lang/rust/issues/48493>
+
 //@ run-pass
 
+enum Void {}
+
 fn main() {
-    enum Void {}
     let _ = std::rc::Weak::<Void>::new();
     let _ = std::sync::Weak::<Void>::new();
 }