1 files changed, 15 insertions, 0 deletions
diff --git a/tests/ui/traits/inheritance/num1.rs b/tests/ui/traits/inheritance/num1.rs
new file mode 100644
index 000000000..663dd3a5e
--- /dev/null
+++ b/tests/ui/traits/inheritance/num1.rs
@@ -0,0 +1,15 @@
+// run-pass
+#![allow(dead_code)]
+// pretty-expanded FIXME #23616
+
+pub trait NumCast: Sized {
+    fn from(i: i32) -> Option<Self>;
+}
+
+pub trait NumExt: NumCast + PartialOrd { }
+
+fn greater_than_one<T:NumExt>(n: &T) -> bool {
+    *n > NumCast::from(1).unwrap()
+}
+
+pub fn main() {}