1 files changed, 22 insertions, 0 deletions
diff --git a/src/test/ui/error-codes/E0520.rs b/src/test/ui/error-codes/E0520.rs
new file mode 100644
index 000000000..ead78b7ff
--- /dev/null
+++ b/src/test/ui/error-codes/E0520.rs
@@ -0,0 +1,22 @@
+#![feature(specialization)]
+//~^ WARN the feature `specialization` is incomplete
+
+trait SpaceLlama {
+    fn fly(&self);
+}
+
+impl<T> SpaceLlama for T {
+    default fn fly(&self) {}
+}
+
+impl<T: Clone> SpaceLlama for T {
+    fn fly(&self) {}
+}
+
+impl SpaceLlama for i32 {
+    default fn fly(&self) {}
+    //~^ ERROR E0520
+}
+
+fn main() {
+}