Add feature gate

1 files changed, 2 insertions, 2 deletions

diff --git a/tests/ui/offset-of/offset-of-builtin.rs b/tests/ui/offset-of/offset-of-builtin.rs
index dcc58e842a0..1be9899887b 100644
--- a/tests/ui/offset-of/offset-of-builtin.rs
+++ b/tests/ui/offset-of/offset-of-builtin.rs
@@ -1,9 +1,9 @@
+#![feature(builtin_syntax)]
+
 // For the exposed macro we already test these errors in the other files,
 // but this test helps to make sure the builtin construct also errors.
 // This has the same examples as offset-of-arg-count.rs
 
-
-
 fn main() {
     builtin # offset_of(NotEnoughArguments); //~ ERROR expected one of
 }