1 files changed, 18 insertions, 0 deletions
diff --git a/tests/ui/missing_fields_in_debug.rs b/tests/ui/missing_fields_in_debug.rs
index e91e8ab7f47..68867ec819d 100644
--- a/tests/ui/missing_fields_in_debug.rs
+++ b/tests/ui/missing_fields_in_debug.rs
@@ -4,6 +4,7 @@
 use std::fmt;
 use std::marker::PhantomData;
 use std::ops::Deref;
+use std::thread::LocalKey;
 
 struct NamedStruct1Ignored {
     data: u8,
@@ -191,4 +192,21 @@ impl fmt::Debug for WithPD {
     }
 }
 
+struct InClosure {
+    a: u8,
+    b: String,
+}
+
+impl fmt::Debug for InClosure {
+    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
+        let mut d = f.debug_struct("InClosure");
+        d.field("a", &self.a);
+        let mut c = || {
+            d.field("b", &self.b);
+        };
+        c();
+        d.finish()
+    }
+}
+
 fn main() {}