From 5f0d46cd48c9281b3502d5aa2047124f3ee6b2e0 Mon Sep 17 00:00:00 2001
From: Marcin S <scatman@bu.edu>
Date: Thu, 3 Jan 2019 19:07:21 +0100
Subject: [PATCH] Add ui/for_kv_map test for false positive in #1279

---
 tests/ui/for_kv_map.rs | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/tests/ui/for_kv_map.rs b/tests/ui/for_kv_map.rs
index d79ea4bebeb5..549187756abd 100644
--- a/tests/ui/for_kv_map.rs
+++ b/tests/ui/for_kv_map.rs
@@ -42,15 +42,18 @@ fn main() {
     for (k, _value) in rm {
         let _k = k;
     }
-    test_for_kv_map();
-}
 
-fn test_for_kv_map() {
-    let m: HashMap<u64, u64> = HashMap::new();
+    // The following should not produce warnings.
 
+    let m: HashMap<u64, u64> = HashMap::new();
     // No error, _value is actually used
     for (k, _value) in &m {
         let _ = _value;
         let _k = k;
     }
+
+    let m: HashMap<u64, String> = Default::default();
+    for (_, v) in m {
+        let _v = v;
+    }
 }