Rollup merge of #102204 - fee1-dead-contrib:manually-drop-trivially-d…

…rop, r=oli-obk Make `ManuallyDrop` satisfy `~const Destruct`
rust-lang · Sep 24, 2022 · 5fb41a6 · 5fb41a6
2 parents 1c4a85f + a74eba4
commit 5fb41a6
Showing 1 changed file with 3 additions and 0 deletions.
diff --git a/compiler/rustc_trait_selection/src/traits/select/confirmation.rs b/compiler/rustc_trait_selection/src/traits/select/confirmation.rs
@@ -1224,6 +1224,9 @@ impl<'cx, 'tcx> SelectionContext<'cx, 'tcx> {
                 | ty::Never
                 | ty::Foreign(_) => {}
 
+                // `ManuallyDrop` is trivially drop
+                ty::Adt(def, _) if Some(def.did()) == tcx.lang_items().manually_drop() => {}
+
                 // These types are built-in, so we can fast-track by registering
                 // nested predicates for their constituent type(s)
                 ty::Array(ty, _) | ty::Slice(ty) => {