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-rw-r--r--src/librustc/lib/llvm.rs1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/librustc/lib/llvm.rs b/src/librustc/lib/llvm.rs
index 8ca8c12f412..aeb2017c9d6 100644
--- a/src/librustc/lib/llvm.rs
+++ b/src/librustc/lib/llvm.rs
@@ -58,6 +58,7 @@ pub enum Linkage {
     LinkerPrivateWeakLinkage = 16,
 }
 
+#[deriving(Clone)]
 pub enum Attribute {
     ZExtAttribute = 1,
     SExtAttribute = 2,