1 files changed, 6 insertions, 0 deletions

diff --git a/tests/ui/issues/issue-40861.rs b/tests/ui/issues/issue-40861.rs
new file mode 100644
index 00000000000..d8a8384a544
--- /dev/null
+++ b/tests/ui/issues/issue-40861.rs
@@ -0,0 +1,6 @@
+fn f(_: &[f32]) {}
+
+fn main() {
+    ()[f(&[1.0])];
+    //~^ ERROR cannot index into a value of type `()`
+}