Auto merge of #30001 - Detegr:master, r=Manishearth

r? @Manishearth

Author: bors

src/librustc_typeck/check/callee.rs

@@ -231,6 +231,17 @@ fn confirm_builtin_call<'a,'tcx>(fcx: &FnCtxt<'a,'tcx>,
                 format!("expected function, found `{}`", actual)
             }, callee_ty, None);
 
+            if let hir::ExprCall(ref expr, _) = call_expr.node {
+                let tcx = fcx.tcx();
+                if let Some(pr) = tcx.def_map.borrow().get(&expr.id) {
+                    if pr.depth == 0 {
+                        if let Some(span) = tcx.map.span_if_local(pr.def_id()) {
+                            tcx.sess.span_note(span, "defined here")
+                        }
+                    }
+                }
+            }
+
             // This is the "default" function signature, used in case of error.
             // In that case, we check each argument against "error" in order to
             // set up all the node type bindings.

src/test/compile-fail/issue-10969.rs

@@ -0,0 +1,17 @@
+// Copyright 2015 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.
+
+fn func(i: i32) { //~NOTE defined here
+    i(); //~ERROR expected function, found `i32`
+}
+fn main() {
+    let i = 0i32; //~NOTE defined here
+    i(); //~ERROR expected function, found `i32`
+}