1 files changed, 14 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-23041.stderr b/tests/ui/issues/issue-23041.stderr
new file mode 100644
index 000000000..6592b76a3
--- /dev/null
+++ b/tests/ui/issues/issue-23041.stderr
@@ -0,0 +1,14 @@
+error[E0282]: type annotations needed
+  --> $DIR/issue-23041.rs:6:7
+   |
+LL |     b.downcast_ref::<fn(_)->_>();
+   |       ^^^^^^^^^^^^ cannot infer type of the type parameter `T` declared on the associated function `downcast_ref`
+   |
+help: consider specifying the generic argument
+   |
+LL |     b.downcast_ref::<fn(_) -> _>();
+   |                   ~~~~~~~~~~~~~~
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0282`.