Pretty print AsyncFn traits too

1 files changed, 14 insertions, 0 deletions

diff --git a/tests/ui/async-await/async-closures/pretty-async-fn-opaque.rs b/tests/ui/async-await/async-closures/pretty-async-fn-opaque.rs
new file mode 100644
index 00000000000..2e7cf1b09fd
--- /dev/null
+++ b/tests/ui/async-await/async-closures/pretty-async-fn-opaque.rs
@@ -0,0 +1,14 @@
+//@ edition: 2021
+
+#![feature(async_closure)]
+
+use std::ops::AsyncFnMut;
+
+fn produce() -> impl AsyncFnMut() -> &'static str {
+    async || ""
+}
+
+fn main() {
+    let x: i32 = produce();
+    //~^ ERROR mismatched types
+}