1 files changed, 26 insertions, 0 deletions
diff --git a/tests/ui/traits/inheritance/multiple-params.rs b/tests/ui/traits/inheritance/multiple-params.rs
new file mode 100644
index 000000000..8ff5ba541
--- /dev/null
+++ b/tests/ui/traits/inheritance/multiple-params.rs
@@ -0,0 +1,26 @@
+// run-pass
+#![allow(dead_code)]
+
+trait A { fn a(&self) -> isize; }
+trait B: A { fn b(&self) -> isize; }
+trait C: A { fn c(&self) -> isize; }
+
+struct S { bogus: () }
+
+impl A for S { fn a(&self) -> isize { 10 } }
+impl B for S { fn b(&self) -> isize { 20 } }
+impl C for S { fn c(&self) -> isize { 30 } }
+
+// Multiple type params, multiple levels of inheritance
+fn f<X:A,Y:B,Z:C>(x: &X, y: &Y, z: &Z) {
+    assert_eq!(x.a(), 10);
+    assert_eq!(y.a(), 10);
+    assert_eq!(y.b(), 20);
+    assert_eq!(z.a(), 10);
+    assert_eq!(z.c(), 30);
+}
+
+pub fn main() {
+    let s = &S { bogus: () };
+    f(s, s, s);
+}