1 files changed, 15 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-22781.rs b/tests/ui/issues/issue-22781.rs
new file mode 100644
index 000000000..d644cec4d
--- /dev/null
+++ b/tests/ui/issues/issue-22781.rs
@@ -0,0 +1,15 @@
+// check-pass
+#![allow(unused_variables)]
+use std::collections::HashMap;
+use std::collections::hash_map::Entry::Vacant;
+
+pub fn foo() {
+    type F = Box<dyn Fn(&()) + 'static>;
+    let mut map: HashMap<(), F> = HashMap::new();
+    let x: &mut F = match map.entry(()) {
+        Vacant(_) => unimplemented!(),
+        _ => unimplemented!()
+    };
+}
+
+fn main() {}