1 files changed, 12 insertions, 0 deletions
diff --git a/src/test/ui/traits/composition-trivial.rs b/src/test/ui/traits/composition-trivial.rs
new file mode 100644
index 000000000..90e5dcd68
--- /dev/null
+++ b/src/test/ui/traits/composition-trivial.rs
@@ -0,0 +1,12 @@
+// run-pass
+// pretty-expanded FIXME #23616
+
+trait Foo {
+    fn foo(&self);
+}
+
+trait Bar : Foo {
+    fn bar(&self);
+}
+
+pub fn main() {}