Merge tag 'debian/1.52.1+dfsg1-1_exp2' into proxmox/buster

[rustc.git] / src / test / ui / traits / inheritance / basic.rs

diff --git a/src/test/ui/traits/inheritance/basic.rs b/src/test/ui/traits/inheritance/basic.rs
new file mode 100644 (file)
index 0000000..5bfa60b
--- /dev/null
+++ b/src/test/ui/traits/inheritance/basic.rs
@@ -0,0 +1,26 @@
+// run-pass
+#![allow(dead_code)]
+
+trait Foo { fn f(&self) -> isize; }
+trait Bar { fn g(&self) -> isize; }
+trait Baz { fn h(&self) -> isize; }
+
+trait Quux: Foo + Bar + Baz { }
+
+struct A { x: isize }
+
+impl Foo for A { fn f(&self) -> isize { 10 } }
+impl Bar for A { fn g(&self) -> isize { 20 } }
+impl Baz for A { fn h(&self) -> isize { 30 } }
+impl Quux for A {}
+
+fn f<T:Quux + Foo + Bar + Baz>(a: &T) {
+    assert_eq!(a.f(), 10);
+    assert_eq!(a.g(), 20);
+    assert_eq!(a.h(), 30);
+}
+
+pub fn main() {
+    let a = &A { x: 3 };
+    f(a);
+}