1 files changed, 4 insertions, 0 deletions
diff --git a/src/librustc_trans/trans/cabi.rs b/src/librustc_trans/trans/cabi.rs
index 518b0ba73f8..7aabd998f7a 100644
--- a/src/librustc_trans/trans/cabi.rs
+++ b/src/librustc_trans/trans/cabi.rs
@@ -31,6 +31,8 @@ pub enum ArgKind {
     Ignore,
 }
 
+impl Copy for ArgKind {}
+
 /// Information about how a specific C type
 /// should be passed to or returned from a function
 ///
@@ -48,6 +50,8 @@ pub struct ArgType {
     pub attr: option::Option<Attribute>
 }
 
+impl Copy for ArgType {}
+
 impl ArgType {
     pub fn direct(ty: Type, cast: option::Option<Type>,
                             pad: option::Option<Type>,