1 files changed, 37 insertions, 0 deletions
diff --git a/tests/ui/extern/no-mangle-associated-fn.rs b/tests/ui/extern/no-mangle-associated-fn.rs
new file mode 100644
index 000000000..ecd44abbf
--- /dev/null
+++ b/tests/ui/extern/no-mangle-associated-fn.rs
@@ -0,0 +1,37 @@
+// aux-build: no-mangle-associated-fn.rs
+// run-pass
+
+extern crate no_mangle_associated_fn;
+
+struct Foo;
+
+impl Foo {
+    #[no_mangle]
+    fn foo() -> u8 {
+        1
+    }
+}
+
+trait Bar {
+    fn qux() -> u8;
+}
+
+impl Bar for Foo {
+    #[no_mangle]
+    fn qux() -> u8 {
+        4
+    }
+}
+
+fn main() {
+    extern "Rust" {
+        fn foo() -> u8;
+        fn bar() -> u8;
+        fn baz() -> u8;
+        fn qux() -> u8;
+    }
+    assert_eq!(unsafe { foo() }, 1);
+    assert_eq!(unsafe { bar() }, 2);
+    assert_eq!(unsafe { baz() }, 3);
+    assert_eq!(unsafe { qux() }, 4);
+}