1 files changed, 6 insertions, 0 deletions
diff --git a/tests/ui/format.rs b/tests/ui/format.rs
index a065b1b5683..009c1aa216f 100644
--- a/tests/ui/format.rs
+++ b/tests/ui/format.rs
@@ -75,4 +75,10 @@ fn main() {
     let _s: String = format!("{}", &*v.join("\n"));
 
     format!("prepend {:+}", "s");
+
+    // Issue #8290
+    let x = "foo";
+    let _ = format!("{x}");
+    let _ = format!("{x:?}"); // Don't lint on debug
+    let _ = format!("{y}", y = x);
 }