2 files changed, 34 insertions, 0 deletions
diff --git a/tests/ui/redundant_clone.fixed b/tests/ui/redundant_clone.fixed
index 7d5195b6217..c1c389f7c4e 100644
--- a/tests/ui/redundant_clone.fixed
+++ b/tests/ui/redundant_clone.fixed
@@ -274,3 +274,20 @@ mod issue10074 {
         println!("{v}");
     }
 }
+
+mod issue13900 {
+    use std::fmt::Display;
+
+    fn do_something(f: impl Display + Clone) -> String {
+        let g = f.clone();
+        format!("{} + {}", f, g)
+    }
+
+    fn regression() {
+        let mut a = String::new();
+        let mut b = String::new();
+        for _ in 1..10 {
+            b = a.clone();
+        }
+    }
+}
diff --git a/tests/ui/redundant_clone.rs b/tests/ui/redundant_clone.rs
index 0ea1024a568..78d98762efc 100644
--- a/tests/ui/redundant_clone.rs
+++ b/tests/ui/redundant_clone.rs
@@ -274,3 +274,20 @@ mod issue10074 {
         println!("{v}");
     }
 }
+
+mod issue13900 {
+    use std::fmt::Display;
+
+    fn do_something(f: impl Display + Clone) -> String {
+        let g = f.clone();
+        format!("{} + {}", f, g)
+    }
+
+    fn regression() {
+        let mut a = String::new();
+        let mut b = String::new();
+        for _ in 1..10 {
+            b = a.clone();
+        }
+    }
+}