From cd271d017410fc30c65656f440511189f8234ca9 Mon Sep 17 00:00:00 2001
From: lucas <lucas@cloudflare.com>
Date: Mon, 2 Mar 2020 19:18:41 +0000
Subject: [PATCH] lib: annotate empty slice for tests

---
 src/ranges.rs | 15 +++++++++++----
 1 file changed, 11 insertions(+), 4 deletions(-)

diff --git a/src/ranges.rs b/src/ranges.rs
index 3d1f718341..b61535f201 100644
--- a/src/ranges.rs
+++ b/src/ranges.rs
@@ -244,7 +244,8 @@ mod tests {
     fn insert_non_overlapping() {
         let mut r = RangeSet::default();
         assert_eq!(r.inner.len(), 0);
-        assert_eq!(&r.flatten().collect::<Vec<u64>>(), &[]);
+        let empty: &[u64] = &[];
+        assert_eq!(&r.flatten().collect::<Vec<u64>>(), &empty);
 
         r.insert(4..7);
         assert_eq!(r.inner.len(), 1);
@@ -432,7 +433,9 @@ mod tests {
     fn flatten_rev() {
         let mut r = RangeSet::default();
         assert_eq!(r.inner.len(), 0);
-        assert_eq!(&r.flatten().collect::<Vec<u64>>(), &[]);
+
+        let empty: &[u64] = &[];
+        assert_eq!(&r.flatten().collect::<Vec<u64>>(), &empty);
 
         r.insert(4..7);
         assert_eq!(r.inner.len(), 1);
@@ -451,7 +454,9 @@ mod tests {
     fn flatten_one() {
         let mut r = RangeSet::default();
         assert_eq!(r.inner.len(), 0);
-        assert_eq!(&r.flatten().collect::<Vec<u64>>(), &[]);
+
+        let empty: &[u64] = &[];
+        assert_eq!(&r.flatten().collect::<Vec<u64>>(), &empty);
 
         r.insert(0..1);
         assert_eq!(r.inner.len(), 1);
@@ -496,7 +501,9 @@ mod tests {
         assert_eq!(&r.flatten().collect::<Vec<u64>>(), &[19]);
 
         r.remove_until(20);
-        assert_eq!(&r.flatten().collect::<Vec<u64>>(), &[]);
+
+        let empty: &[u64] = &[];
+        assert_eq!(&r.flatten().collect::<Vec<u64>>(), &empty);
     }
 
     #[test]