1 files changed, 10 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-20575.rs b/tests/ui/issues/issue-20575.rs
new file mode 100644
index 000000000..0ca67d9dc
--- /dev/null
+++ b/tests/ui/issues/issue-20575.rs
@@ -0,0 +1,10 @@
+// run-pass
+// Test that overloaded calls work with zero arity closures
+
+// pretty-expanded FIXME #23616
+
+fn main() {
+    let functions: [Box<dyn Fn() -> Option<()>>; 1] = [Box::new(|| None)];
+
+    let _: Option<Vec<()>> = functions.iter().map(|f| (*f)()).collect();
+}