1 files changed, 28 insertions, 0 deletions
diff --git a/compiler/rustc_builtin_macros/src/deriving/bounds.rs b/compiler/rustc_builtin_macros/src/deriving/bounds.rs
new file mode 100644
index 000000000..5ef68c6ae
--- /dev/null
+++ b/compiler/rustc_builtin_macros/src/deriving/bounds.rs
@@ -0,0 +1,28 @@
+use crate::deriving::generic::ty::*;
+use crate::deriving::generic::*;
+use crate::deriving::path_std;
+
+use rustc_ast::MetaItem;
+use rustc_expand::base::{Annotatable, ExtCtxt};
+use rustc_span::Span;
+
+pub fn expand_deriving_copy(
+    cx: &mut ExtCtxt<'_>,
+    span: Span,
+    mitem: &MetaItem,
+    item: &Annotatable,
+    push: &mut dyn FnMut(Annotatable),
+) {
+    let trait_def = TraitDef {
+        span,
+        attributes: Vec::new(),
+        path: path_std!(marker::Copy),
+        additional_bounds: Vec::new(),
+        generics: Bounds::empty(),
+        supports_unions: true,
+        methods: Vec::new(),
+        associated_types: Vec::new(),
+    };
+
+    trait_def.expand(cx, mitem, item, push);
+}