1 files changed, 13 insertions, 0 deletions
diff --git a/src/test/ui/specialization/specialization-feature-gate-default.rs b/src/test/ui/specialization/specialization-feature-gate-default.rs
new file mode 100644
index 000000000..8bad3ac0a
--- /dev/null
+++ b/src/test/ui/specialization/specialization-feature-gate-default.rs
@@ -0,0 +1,13 @@
+// Check that specialization must be ungated to use the `default` keyword
+
+// gate-test-specialization
+
+trait Foo {
+    fn foo(&self);
+}
+
+impl<T> Foo for T {
+    default fn foo(&self) {} //~ ERROR specialization is unstable
+}
+
+fn main() {}