From 2c282b8e5d0b592f72e9fd3c6038c8e2e80d6055 Mon Sep 17 00:00:00 2001
From: Tommy Ip <hkmp7tommy@gmail.com>
Date: Tue, 6 Jun 2017 09:17:06 +0100
Subject: Add additional ui tests for issue 26046

This tests the FnMut case.
---
 src/test/ui/issue-26046-fn-mut.rs     | 21 +++++++++++++++++++++
 src/test/ui/issue-26046-fn-mut.stderr | 17 +++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 src/test/ui/issue-26046-fn-mut.rs
 create mode 100644 src/test/ui/issue-26046-fn-mut.stderr

diff --git a/src/test/ui/issue-26046-fn-mut.rs b/src/test/ui/issue-26046-fn-mut.rs
new file mode 100644
index 00000000000..5ed7ace5437
--- /dev/null
+++ b/src/test/ui/issue-26046-fn-mut.rs
@@ -0,0 +1,21 @@
+// Copyright 2017 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 foo() -> Box<Fn()> {
+    let num = 5;
+
+    let closure = || {
+        num += 1;
+    };
+
+    Box::new(closure)
+}
+
+fn main() {}
diff --git a/src/test/ui/issue-26046-fn-mut.stderr b/src/test/ui/issue-26046-fn-mut.stderr
new file mode 100644
index 00000000000..4dd33ef8a0e
--- /dev/null
+++ b/src/test/ui/issue-26046-fn-mut.stderr
@@ -0,0 +1,17 @@
+error[E0525]: expected a closure that implements the `Fn` trait, but this closure only implements `FnMut`
+  --> $DIR/issue-26046-fn-mut.rs:14:19
+   |
+14 |       let closure = || {
+   |  ___________________^
+15 | |         num += 1;
+16 | |     };
+   | |_____^
+   |
+note: closure is `FnMut` because it mutates the variable `num` here
+  --> $DIR/issue-26046-fn-mut.rs:15:9
+   |
+15 |         num += 1;
+   |         ^^^
+
+error: aborting due to previous error(s)
+
-- 
cgit 1.4.1-3-g733a5