1 files changed, 2 insertions, 0 deletions
diff --git a/src/libsyntax/parse/obsolete.rs b/src/libsyntax/parse/obsolete.rs
index 650f8295d01..2a2bb42cef0 100644
--- a/src/libsyntax/parse/obsolete.rs
+++ b/src/libsyntax/parse/obsolete.rs
@@ -34,6 +34,8 @@ pub enum ObsoleteSyntax {
     ObsoleteExternCrateRenaming,
 }
 
+impl Copy for ObsoleteSyntax {}
+
 pub trait ParserObsoleteMethods {
     /// Reports an obsolete syntax non-fatal error.
     fn obsolete(&mut self, sp: Span, kind: ObsoleteSyntax);