auto merge of #16639 : pcwalton/rust/unboxed-closures-param-resolution, r=nick29581

Closes #16508.

r? @nick29581

src/test/run-pass/overloaded-calls-param-vtables.rs

@@ -0,0 +1,29 @@
+// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
+// file at the top-level directory of this distribution and at
+// http://rust-lang.org/COPYRIGHT.
+//
+// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
+// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
+// option. This file may not be copied, modified, or distributed
+// except according to those terms.
+
+// Tests that nested vtables work with overloaded calls.
+
+#![feature(overloaded_calls)]
+
+use std::ops::Fn;
+
+struct G;
+
+impl<'a, A: Add<int, int>> Fn<(A,), int> for G {
+    extern "rust-call" fn call(&self, (arg,): (A,)) -> int {
+        arg.add(&1)
+    }
+}
+
+fn main() {
+    // ICE trigger
+    G(1i);
+}
+