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-rw-r--r--tests/ui/traits/trait-upcasting/basic.rs2
1 files changed, 2 insertions, 0 deletions
diff --git a/tests/ui/traits/trait-upcasting/basic.rs b/tests/ui/traits/trait-upcasting/basic.rs
index 538cd8329cc..570ec5160bf 100644
--- a/tests/ui/traits/trait-upcasting/basic.rs
+++ b/tests/ui/traits/trait-upcasting/basic.rs
@@ -1,5 +1,7 @@
 // run-pass
 
+#![feature(trait_upcasting)]
+
 trait Foo: PartialEq<i32> + std::fmt::Debug + Send + Sync {
     fn a(&self) -> i32 {
         10