X-Git-Url: https://git.lizzy.rs/?a=blobdiff_plain;f=src%2Ftools%2Fclippy%2Ftests%2Fui%2Fredundant_clone.rs;h=acb7ffb305f2a8890b981bfed1c4f5303d8da232;hb=e4e1b8c6b7b30d7180792e1965cc0757c41c621a;hp=839747b131d77da22c7d559d0133f7006bd2d246;hpb=62374ee4ad00a4cc8a4807ed13823a49e2e8422d;p=rust.git

diff --git a/src/tools/clippy/tests/ui/redundant_clone.rs b/src/tools/clippy/tests/ui/redundant_clone.rs
index 839747b131d..acb7ffb305f 100644
--- a/src/tools/clippy/tests/ui/redundant_clone.rs
+++ b/src/tools/clippy/tests/ui/redundant_clone.rs
@@ -52,6 +52,7 @@ fn main() {
     borrower_propagation();
     not_consumed();
     issue_5405();
+    manually_drop();
 }
 
 #[derive(Clone)]
@@ -170,3 +171,17 @@ fn issue_5405() {
     let c: [usize; 2] = [2, 3];
     let _d: usize = c[1].clone();
 }
+
+fn manually_drop() {
+    use std::mem::ManuallyDrop;
+    use std::sync::Arc;
+
+    let a = ManuallyDrop::new(Arc::new("Hello!".to_owned()));
+    let _ = a.clone(); // OK
+
+    let p: *const String = Arc::into_raw(ManuallyDrop::into_inner(a));
+    unsafe {
+        Arc::from_raw(p);
+        Arc::from_raw(p);
+    }
+}