Auto merge of #39230 - petrochenkov:nobox, r=eddyb

Refactoring TyBox -> TyAdt

r? @eddyb
cc @Manishearth

1 files changed, 9 insertions, 0 deletions

diff --git a/src/liballoc/boxed.rs b/src/liballoc/boxed.rs
index 5409ade2923..b6f490e09cd 100644
--- a/src/liballoc/boxed.rs
+++ b/src/liballoc/boxed.rs
@@ -103,6 +103,7 @@ pub struct ExchangeHeapSingleton {
 ///
 /// See the [module-level documentation](../../std/boxed/index.html) for more.
 #[lang = "owned_box"]
+#[fundamental]
 #[stable(feature = "rust1", since = "1.0.0")]
 pub struct Box<T: ?Sized>(Unique<T>);
 
@@ -292,6 +293,14 @@ impl<T: ?Sized> Box<T> {
     }
 }
 
+#[cfg(not(stage0))]
+#[stable(feature = "rust1", since = "1.0.0")]
+unsafe impl<#[may_dangle] T: ?Sized> Drop for Box<T> {
+    fn drop(&mut self) {
+        // FIXME: Do nothing, drop is currently performed by compiler.
+    }
+}
+
 #[stable(feature = "rust1", since = "1.0.0")]
 impl<T: Default> Default for Box<T> {
     /// Creates a `Box<T>`, with the `Default` value for T.